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86 vulnerabilities found for strongswan by strongswan
CERTFR-2026-AVI-0709
Vulnerability from certfr_avis - Published: 2026-06-09 - Updated: 2026-06-09
Une vulnérabilité a été découverte dans strongSwan. Elle permet à un attaquant de provoquer une exécution de code arbitraire à distance.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| StrongSwan | strongSwan | strongSwan versions antérieures à 6.0.7 |
References
| Title | Publication Time | Tags | |||
|---|---|---|---|---|---|
|
|||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "strongSwan versions ant\u00e9rieures \u00e0 6.0.7",
"product": {
"name": "strongSwan",
"vendor": {
"name": "StrongSwan",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-47895",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-47895"
}
],
"initial_release_date": "2026-06-09T00:00:00",
"last_revision_date": "2026-06-09T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-0709",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-06-09T00:00:00.000000"
}
],
"risks": [
{
"description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
}
],
"summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans strongSwan. Elle permet \u00e0 un attaquant de provoquer une ex\u00e9cution de code arbitraire \u00e0 distance.",
"title": "Vuln\u00e9rabilit\u00e9 dans strongSwan",
"vendor_advisories": [
{
"published_at": "2026-06-08",
"title": "Bulletin de s\u00e9curit\u00e9 StrongSwan cve-2026-47895",
"url": "https://www.strongswan.org//blog/2026/06/08/strongswan-vulnerability-(cve-2026-47895).html"
}
]
}
CERTFR-2026-AVI-0484
Vulnerability from certfr_avis - Published: 2026-04-23 - Updated: 2026-04-23
De multiples vulnérabilités ont été découvertes dans strongSwan. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et un contournement de la politique de sécurité.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| StrongSwan | strongSwan | strongSwan versions antérieures à 6.0.6 |
References
| Title | Publication Time | Tags | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "strongSwan versions ant\u00e9rieures \u00e0 6.0.6",
"product": {
"name": "strongSwan",
"vendor": {
"name": "StrongSwan",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-35330",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-35330"
},
{
"name": "CVE-2026-35332",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-35332"
},
{
"name": "CVE-2026-35333",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-35333"
},
{
"name": "CVE-2026-35328",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-35328"
},
{
"name": "CVE-2026-35331",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-35331"
},
{
"name": "CVE-2026-35334",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-35334"
},
{
"name": "CVE-2026-35329",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-35329"
}
],
"initial_release_date": "2026-04-23T00:00:00",
"last_revision_date": "2026-04-23T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-0484",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-04-23T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans strongSwan. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer une ex\u00e9cution de code arbitraire \u00e0 distance, un d\u00e9ni de service \u00e0 distance et un contournement de la politique de s\u00e9curit\u00e9.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans strongSwan",
"vendor_advisories": [
{
"published_at": "2026-04-22",
"title": "Bulletin de s\u00e9curit\u00e9 StrongSwan cve-2026-35334",
"url": "https://www.strongswan.org//blog/2026/04/22/strongswan-vulnerability-(cve-2026-35334).html"
},
{
"published_at": "2026-04-22",
"title": "Bulletin de s\u00e9curit\u00e9 StrongSwan cve-2026-35329",
"url": "https://www.strongswan.org//blog/2026/04/22/strongswan-vulnerability-(cve-2026-35329).html"
},
{
"published_at": "2026-04-22",
"title": "Bulletin de s\u00e9curit\u00e9 StrongSwan cve-2026-35333",
"url": "https://www.strongswan.org//blog/2026/04/22/strongswan-vulnerability-(cve-2026-35333).html"
},
{
"published_at": "2026-04-22",
"title": "Bulletin de s\u00e9curit\u00e9 StrongSwan cve-2026-35331",
"url": "https://www.strongswan.org//blog/2026/04/22/strongswan-vulnerability-(cve-2026-35331).html"
},
{
"published_at": "2026-04-22",
"title": "Bulletin de s\u00e9curit\u00e9 StrongSwan cve-2026-35330",
"url": "https://www.strongswan.org//blog/2026/04/22/strongswan-vulnerability-(cve-2026-35330).html"
},
{
"published_at": "2026-04-22",
"title": "Bulletin de s\u00e9curit\u00e9 StrongSwan cve-2026-35328",
"url": "https://www.strongswan.org//blog/2026/04/22/strongswan-vulnerability-(cve-2026-35328).html"
},
{
"published_at": "2026-04-22",
"title": "Bulletin de s\u00e9curit\u00e9 StrongSwan cve-2026-35332",
"url": "https://www.strongswan.org//blog/2026/04/22/strongswan-vulnerability-(cve-2026-35332).html"
}
]
}
CERTFR-2026-AVI-0344
Vulnerability from certfr_avis - Published: 2026-03-24 - Updated: 2026-03-24
Une vulnérabilité a été découverte dans strongSwan. Elle permet à un attaquant de provoquer un déni de service à distance.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| StrongSwan | strongSwan | strongSwan versions antérieures à 6.0.5 |
References
| Title | Publication Time | Tags | |||
|---|---|---|---|---|---|
|
|||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "strongSwan versions ant\u00e9rieures \u00e0 6.0.5",
"product": {
"name": "strongSwan",
"vendor": {
"name": "StrongSwan",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-25075",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-25075"
}
],
"initial_release_date": "2026-03-24T00:00:00",
"last_revision_date": "2026-03-24T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-0344",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-03-24T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
}
],
"summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans strongSwan. Elle permet \u00e0 un attaquant de provoquer un d\u00e9ni de service \u00e0 distance.",
"title": "Vuln\u00e9rabilit\u00e9 dans strongSwan",
"vendor_advisories": [
{
"published_at": "2026-03-23",
"title": "Bulletin de s\u00e9curit\u00e9 StrongSwan cve-2026-25075",
"url": "https://www.strongswan.org//blog/2026/03/23/strongswan-vulnerability-(cve-2026-25075).html"
}
]
}
CERTFR-2025-AVI-1109
Vulnerability from certfr_avis - Published: 2025-12-15 - Updated: 2025-12-15
Une vulnérabilité a été découverte dans StrongSwan. Elle permet à un attaquant de provoquer un contournement de la politique de sécurité.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Des correctifs de sécurité sont mis à disposition par l'éditeur pour certaines versions de strongSwan et NetworkManager-strongswan, se référer à l'avis éditeur.
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| StrongSwan | strongSwan | strongSwan versions postérieures à 4.x et antérieures à 6.0.4 | ||
| StrongSwan | strongSwan | greffon NetworkManager-strongswan versions antérieures à 1.6.4 |
References
| Title | Publication Time | Tags | |||
|---|---|---|---|---|---|
|
|||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "strongSwan versions post\u00e9rieures \u00e0 4.x et ant\u00e9rieures \u00e0 6.0.4",
"product": {
"name": "strongSwan",
"vendor": {
"name": "StrongSwan",
"scada": false
}
}
},
{
"description": "greffon NetworkManager-strongswan versions ant\u00e9rieures \u00e0 1.6.4",
"product": {
"name": "strongSwan",
"vendor": {
"name": "StrongSwan",
"scada": false
}
}
}
],
"affected_systems_content": "Des correctifs de s\u00e9curit\u00e9 sont mis \u00e0 disposition par l\u0027\u00e9diteur pour certaines versions de strongSwan et NetworkManager-strongswan, se r\u00e9f\u00e9rer \u00e0 l\u0027avis \u00e9diteur.",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2025-9615",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-9615"
}
],
"initial_release_date": "2025-12-15T00:00:00",
"last_revision_date": "2025-12-15T00:00:00",
"links": [],
"reference": "CERTFR-2025-AVI-1109",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2025-12-15T00:00:00.000000"
}
],
"risks": [
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
}
],
"summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans StrongSwan. Elle permet \u00e0 un attaquant de provoquer un contournement de la politique de s\u00e9curit\u00e9.",
"title": "Vuln\u00e9rabilit\u00e9 dans strongSwan",
"vendor_advisories": [
{
"published_at": "2025-12-12",
"title": "Bulletin de s\u00e9curit\u00e9 StrongSwan cve-2025-9615",
"url": "https://www.strongswan.org//blog/2025/12/12/strongswan-vulnerability-(cve-2025-9615).html"
}
]
}
CERTFR-2025-AVI-0931
Vulnerability from certfr_avis - Published: 2025-10-28 - Updated: 2025-10-28
Une vulnérabilité a été découverte dans StrongSwan. Elle permet à un attaquant de provoquer une exécution de code arbitraire à distance et un déni de service à distance.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| StrongSwan | strongSwan | strongSwan versions antérieures à 6.0.3 avec le Greffon eap-mschapv2 |
References
| Title | Publication Time | Tags | |||
|---|---|---|---|---|---|
|
|||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "strongSwan versions ant\u00e9rieures \u00e0 6.0.3 avec le Greffon eap-mschapv2",
"product": {
"name": "strongSwan",
"vendor": {
"name": "StrongSwan",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2025-62291",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-62291"
}
],
"initial_release_date": "2025-10-28T00:00:00",
"last_revision_date": "2025-10-28T00:00:00",
"links": [],
"reference": "CERTFR-2025-AVI-0931",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2025-10-28T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
}
],
"summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans StrongSwan. Elle permet \u00e0 un attaquant de provoquer une ex\u00e9cution de code arbitraire \u00e0 distance et un d\u00e9ni de service \u00e0 distance.",
"title": "Vuln\u00e9rabilit\u00e9 dans StrongSwan",
"vendor_advisories": [
{
"published_at": "2025-10-27",
"title": "Bulletin de s\u00e9curit\u00e9 StrongSwan cve-2025-62291",
"url": "https://www.strongswan.org//blog/2025/10/27/strongswan-vulnerability-(cve-2025-62291).html"
}
]
}
CVE-2026-25075 (GCVE-0-2026-25075)
Vulnerability from nvd – Published: 2026-03-23 18:33 – Updated: 2026-05-06 14:41
VLAI
Title
strongSwan 4.5.0 < 6.0.5 EAP-TTLS AVP Parsing Integer Underflow
Summary
strongSwan versions 4.5.0 prior to 6.0.5 contain an integer underflow vulnerability in the EAP-TTLS AVP parser that allows unauthenticated remote attackers to cause a denial of service by sending crafted AVP data with invalid length fields during IKEv2 authentication. Attackers can exploit the failure to validate AVP length fields before subtraction to trigger excessive memory allocation or NULL pointer dereference, crashing the charon IKE daemon.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://www.strongswan.org/blog/2026/03/23/strong… | vendor-advisoryexploit |
| https://www.strongswan.org/blog/2026/03/23/strong… | release-notes |
| https://y637f9qq2x.com/posts/cve-2026-25075/ | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/strongswan-e… | third-party-advisory |
| https://lists.debian.org/debian-lts-announce/2026… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| strongSwan | strongSwan |
Affected:
4.5.0 , < 6.0.5
(semver)
|
Date Public
2026-03-23 00:00
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-25075",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-25T14:29:53.640147Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-06T14:41:06.076Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2026-03-27T19:17:30.660Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2026/03/msg00016.html"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "strongSwan",
"repo": "https://github.com/strongswan/strongswan",
"vendor": "strongSwan",
"versions": [
{
"lessThan": "6.0.5",
"status": "affected",
"version": "4.5.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Kazuma Matsumoto, a security researcher at GMO Cybersecurity by IERAE, Inc."
},
{
"lang": "en",
"type": "coordinator",
"value": "VulnCheck"
}
],
"datePublic": "2026-03-23T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "strongSwan versions 4.5.0 prior to 6.0.5 contain an integer underflow vulnerability in the EAP-TTLS AVP parser that allows unauthenticated remote attackers to cause a denial of service by sending crafted AVP data with invalid length fields during IKEv2 authentication. Attackers can exploit the failure to validate AVP length fields before subtraction to trigger excessive memory allocation or NULL pointer dereference, crashing the charon IKE daemon."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-191",
"description": "CWE-191: Integer Underflow (Wrap or Wraparound)",
"lang": "en",
"type": "CWE"
},
{
"cweId": "CWE-476",
"description": "NULL Pointer Dereference (CWE-476)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-04T18:10:36.898Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"tags": [
"vendor-advisory",
"exploit"
],
"url": "https://www.strongswan.org/blog/2026/03/23/strongswan-vulnerability-(cve-2026-25075).html"
},
{
"tags": [
"release-notes"
],
"url": "https://www.strongswan.org/blog/2026/03/23/strongswan-6.0.5-released.html"
},
{
"tags": [
"technical-description",
"exploit"
],
"url": "https://y637f9qq2x.com/posts/cve-2026-25075/"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/strongswan-eap-ttls-avp-parsing-integer-underflow"
}
],
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CVE-2025-62291 (GCVE-0-2025-62291)
Vulnerability from nvd – Published: 2026-01-16 00:00 – Updated: 2026-01-16 19:07
VLAI
Summary
In the eap-mschapv2 plugin (client-side) in strongSwan before 6.0.3, a malicious EAP-MSCHAPv2 server can send a crafted message of size 6 through 8, and cause an integer underflow that potentially results in a heap-based buffer overflow.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| strongSwan | strongSwan |
Affected:
4.2.12 , < 6.0.3
(semver)
|
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CVE-2022-4967 (GCVE-0-2022-4967)
Vulnerability from nvd – Published: 2024-05-13 12:09 – Updated: 2025-02-13 16:38
VLAI
Summary
strongSwan versions 5.9.2 through 5.9.5 are affected by authorization bypass through improper validation of certificate with host mismatch (CWE-297). When certificates are used to authenticate clients in TLS-based EAP methods, the IKE or EAP identity supplied by a client is not enforced to be contained in the client's certificate. So clients can authenticate with any trusted certificate and claim an arbitrary IKE/EAP identity as their own. This is problematic if the identity is used to make policy decisions. A fix was released in strongSwan version 5.9.6 in August 2022 (e4b4aabc4996fc61c37deab7858d07bc4d220136).
Severity
7.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/strongswan/strongswan/commit/e… | patch |
| https://www.strongswan.org/blog/2024/05/13/strong… | vendor-advisory |
| https://www.cve.org/CVERecord?id=CVE-2022-4967 | issue-tracking |
| https://security.netapp.com/advisory/ntap-2024061… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| strongSwan | strongSwan |
Affected:
5.9.2 , < 5.9.6
(semver)
|
Credits
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CVE-2023-41913 (GCVE-0-2023-41913)
Vulnerability from nvd – Published: 2023-12-07 00:00 – Updated: 2025-12-18 15:29
VLAI
Summary
strongSwan before 5.9.12 has a buffer overflow and possible unauthenticated remote code execution via a DH public value that exceeds the internal buffer in charon-tkm's DH proxy. The earliest affected version is 5.3.0. An attack can occur via a crafted IKE_SA_INIT message.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
6 references
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CVE-2023-26463 (GCVE-0-2023-26463)
Vulnerability from nvd – Published: 2023-04-14 00:00 – Updated: 2025-02-13 16:44
VLAI
Summary
strongSwan 5.9.8 and 5.9.9 potentially allows remote code execution because it uses a variable named "public" for two different purposes within the same function. There is initially incorrect access control, later followed by an expired pointer dereference. One attack vector is sending an untrusted client certificate during EAP-TLS. A server is affected only if it loads plugins that implement TLS-based EAP methods (EAP-TLS, EAP-TTLS, EAP-PEAP, or EAP-TNC). This is fixed in 5.9.10.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
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CVE-2022-40617 (GCVE-0-2022-40617)
Vulnerability from nvd – Published: 2022-10-31 00:00 – Updated: 2025-05-06 18:29
VLAI
Summary
strongSwan before 5.9.8 allows remote attackers to cause a denial of service in the revocation plugin by sending a crafted end-entity (and intermediate CA) certificate that contains a CRL/OCSP URL that points to a server (under the attacker's control) that doesn't properly respond but (for example) just does nothing after the initial TCP handshake, or sends an excessive amount of application data.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.strongswan.org/blog/2022/10/03/strong… | |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
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CVE-2021-45079 (GCVE-0-2021-45079)
Vulnerability from nvd – Published: 2022-01-31 07:15 – Updated: 2024-08-04 04:32
VLAI
Summary
In strongSwan before 5.9.5, a malicious responder can send an EAP-Success message too early without actually authenticating the client and (in the case of EAP methods with mutual authentication and EAP-only authentication for IKEv2) even without server authentication.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.strongswan.org/blog/2022/01/24/strong… | x_refsource_MISC |
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CVE-2021-41991 (GCVE-0-2021-41991)
Vulnerability from nvd – Published: 2021-10-18 13:44 – Updated: 2024-08-04 03:22
VLAI
Summary
The in-memory certificate cache in strongSwan before 5.9.4 has a remote integer overflow upon receiving many requests with different certificates to fill the cache and later trigger the replacement of cache entries. The code attempts to select a less-often-used cache entry by means of a random number generator, but this is not done correctly. Remote code execution might be a slight possibility.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/strongswan/strongswan/releases… | x_refsource_MISC |
| https://www.strongswan.org/blog/2021/10/18/strong… | x_refsource_CONFIRM |
| https://www.debian.org/security/2021/dsa-4989 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
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CVE-2021-41990 (GCVE-0-2021-41990)
Vulnerability from nvd – Published: 2021-10-18 13:44 – Updated: 2024-08-04 03:22
VLAI
Summary
The gmp plugin in strongSwan before 5.9.4 has a remote integer overflow via a crafted certificate with an RSASSA-PSS signature. For example, this can be triggered by an unrelated self-signed CA certificate sent by an initiator. Remote code execution cannot occur.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/strongswan/strongswan/releases… | x_refsource_MISC |
| https://www.strongswan.org/blog/2021/10/18/strong… | x_refsource_CONFIRM |
| https://www.debian.org/security/2021/dsa-4989 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
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CVE-2019-10155 (GCVE-0-2019-10155)
Vulnerability from nvd – Published: 2019-06-12 13:51 – Updated: 2024-08-04 22:10
VLAI
Summary
The Libreswan Project has found a vulnerability in the processing of IKEv1 informational exchange packets which are encrypted and integrity protected using the established IKE SA encryption and integrity keys, but as a receiver, the integrity check value was not verified. This issue affects versions before 3.29.
Severity
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://libreswan.org/security/CVE-2019-10155/ | x_refsource_MISC |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://access.redhat.com/errata/RHSA-2019:3391 | vendor-advisoryx_refsource_REDHAT |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| the libreswan Project | libreswan |
Affected:
3.29
|
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CVE-2018-17540 (GCVE-0-2018-17540)
Vulnerability from nvd – Published: 2018-10-03 20:00 – Updated: 2024-08-05 10:54
VLAI
Summary
The gmp plugin in strongSwan before 5.7.1 has a Buffer Overflow via a crafted certificate.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://www.debian.org/security/2018/dsa-4309 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.debian.org/debian-lts-announce/2018… | mailing-listx_refsource_MLIST |
| https://www.strongswan.org/blog/2018/10/01/strong… | x_refsource_CONFIRM |
| https://usn.ubuntu.com/3774-1/ | vendor-advisoryx_refsource_UBUNTU |
| https://download.strongswan.org/security/CVE-2018… | x_refsource_CONFIRM |
| https://security.gentoo.org/glsa/201811-16 | vendor-advisoryx_refsource_GENTOO |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
Date Public
2018-10-01 00:00
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CVE-2018-16152 (GCVE-0-2018-16152)
Vulnerability from nvd – Published: 2018-09-26 21:00 – Updated: 2025-12-03 20:24
VLAI
Summary
In verify_emsa_pkcs1_signature() in gmp_rsa_public_key.c in the gmp plugin in strongSwan 4.x and 5.x before 5.7.0, the RSA implementation based on GMP does not reject excess data in the digestAlgorithm.parameters field during PKCS#1 v1.5 signature verification. Consequently, a remote attacker can forge signatures when small public exponents are being used, which could lead to impersonation when only an RSA signature is used for IKEv2 authentication. This is a variant of CVE-2006-4790 and CVE-2014-1568.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://www.debian.org/security/2018/dsa-4305 | vendor-advisoryx_refsource_DEBIAN |
| https://security.gentoo.org/glsa/201811-16 | vendor-advisoryx_refsource_GENTOO |
| https://www.strongswan.org/blog/2018/09/24/strong… | x_refsource_CONFIRM |
| https://lists.debian.org/debian-lts-announce/2018… | mailing-listx_refsource_MLIST |
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Date Public
2018-09-24 00:00
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CVE-2018-16151 (GCVE-0-2018-16151)
Vulnerability from nvd – Published: 2018-09-26 21:00 – Updated: 2025-12-03 20:26
VLAI
Summary
In verify_emsa_pkcs1_signature() in gmp_rsa_public_key.c in the gmp plugin in strongSwan 4.x and 5.x before 5.7.0, the RSA implementation based on GMP does not reject excess data after the encoded algorithm OID during PKCS#1 v1.5 signature verification. Similar to the flaw in the same version of strongSwan regarding digestAlgorithm.parameters, a remote attacker can forge signatures when small public exponents are being used, which could lead to impersonation when only an RSA signature is used for IKEv2 authentication.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://www.debian.org/security/2018/dsa-4305 | vendor-advisoryx_refsource_DEBIAN |
| https://security.gentoo.org/glsa/201811-16 | vendor-advisoryx_refsource_GENTOO |
| https://www.strongswan.org/blog/2018/09/24/strong… | x_refsource_CONFIRM |
| https://lists.debian.org/debian-lts-announce/2018… | mailing-listx_refsource_MLIST |
| https://usn.ubuntu.com/3771-1/ | vendor-advisoryx_refsource_UBUNTU |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
Date Public
2018-09-24 00:00
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CVE-2026-25075 (GCVE-0-2026-25075)
Vulnerability from cvelistv5 – Published: 2026-03-23 18:33 – Updated: 2026-05-06 14:41
VLAI
Title
strongSwan 4.5.0 < 6.0.5 EAP-TTLS AVP Parsing Integer Underflow
Summary
strongSwan versions 4.5.0 prior to 6.0.5 contain an integer underflow vulnerability in the EAP-TTLS AVP parser that allows unauthenticated remote attackers to cause a denial of service by sending crafted AVP data with invalid length fields during IKEv2 authentication. Attackers can exploit the failure to validate AVP length fields before subtraction to trigger excessive memory allocation or NULL pointer dereference, crashing the charon IKE daemon.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://www.strongswan.org/blog/2026/03/23/strong… | vendor-advisoryexploit |
| https://www.strongswan.org/blog/2026/03/23/strong… | release-notes |
| https://y637f9qq2x.com/posts/cve-2026-25075/ | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/strongswan-e… | third-party-advisory |
| https://lists.debian.org/debian-lts-announce/2026… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| strongSwan | strongSwan |
Affected:
4.5.0 , < 6.0.5
(semver)
|
Date Public
2026-03-23 00:00
Credits
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CVE-2025-62291 (GCVE-0-2025-62291)
Vulnerability from cvelistv5 – Published: 2026-01-16 00:00 – Updated: 2026-01-16 19:07
VLAI
Summary
In the eap-mschapv2 plugin (client-side) in strongSwan before 6.0.3, a malicious EAP-MSCHAPv2 server can send a crafted message of size 6 through 8, and cause an integer underflow that potentially results in a heap-based buffer overflow.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| strongSwan | strongSwan |
Affected:
4.2.12 , < 6.0.3
(semver)
|
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CVE-2022-4967 (GCVE-0-2022-4967)
Vulnerability from cvelistv5 – Published: 2024-05-13 12:09 – Updated: 2025-02-13 16:38
VLAI
Summary
strongSwan versions 5.9.2 through 5.9.5 are affected by authorization bypass through improper validation of certificate with host mismatch (CWE-297). When certificates are used to authenticate clients in TLS-based EAP methods, the IKE or EAP identity supplied by a client is not enforced to be contained in the client's certificate. So clients can authenticate with any trusted certificate and claim an arbitrary IKE/EAP identity as their own. This is problematic if the identity is used to make policy decisions. A fix was released in strongSwan version 5.9.6 in August 2022 (e4b4aabc4996fc61c37deab7858d07bc4d220136).
Severity
7.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/strongswan/strongswan/commit/e… | patch |
| https://www.strongswan.org/blog/2024/05/13/strong… | vendor-advisory |
| https://www.cve.org/CVERecord?id=CVE-2022-4967 | issue-tracking |
| https://security.netapp.com/advisory/ntap-2024061… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| strongSwan | strongSwan |
Affected:
5.9.2 , < 5.9.6
(semver)
|
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CVE-2023-41913 (GCVE-0-2023-41913)
Vulnerability from cvelistv5 – Published: 2023-12-07 00:00 – Updated: 2025-12-18 15:29
VLAI
Summary
strongSwan before 5.9.12 has a buffer overflow and possible unauthenticated remote code execution via a DH public value that exceeds the internal buffer in charon-tkm's DH proxy. The earliest affected version is 5.3.0. An attack can occur via a crafted IKE_SA_INIT message.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
6 references
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CVE-2023-26463 (GCVE-0-2023-26463)
Vulnerability from cvelistv5 – Published: 2023-04-14 00:00 – Updated: 2025-02-13 16:44
VLAI
Summary
strongSwan 5.9.8 and 5.9.9 potentially allows remote code execution because it uses a variable named "public" for two different purposes within the same function. There is initially incorrect access control, later followed by an expired pointer dereference. One attack vector is sending an untrusted client certificate during EAP-TLS. A server is affected only if it loads plugins that implement TLS-based EAP methods (EAP-TLS, EAP-TTLS, EAP-PEAP, or EAP-TNC). This is fixed in 5.9.10.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
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CVE-2022-40617 (GCVE-0-2022-40617)
Vulnerability from cvelistv5 – Published: 2022-10-31 00:00 – Updated: 2025-05-06 18:29
VLAI
Summary
strongSwan before 5.9.8 allows remote attackers to cause a denial of service in the revocation plugin by sending a crafted end-entity (and intermediate CA) certificate that contains a CRL/OCSP URL that points to a server (under the attacker's control) that doesn't properly respond but (for example) just does nothing after the initial TCP handshake, or sends an excessive amount of application data.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.strongswan.org/blog/2022/10/03/strong… | |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
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CVE-2021-45079 (GCVE-0-2021-45079)
Vulnerability from cvelistv5 – Published: 2022-01-31 07:15 – Updated: 2024-08-04 04:32
VLAI
Summary
In strongSwan before 5.9.5, a malicious responder can send an EAP-Success message too early without actually authenticating the client and (in the case of EAP methods with mutual authentication and EAP-only authentication for IKEv2) even without server authentication.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.strongswan.org/blog/2022/01/24/strong… | x_refsource_MISC |
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CVE-2021-41990 (GCVE-0-2021-41990)
Vulnerability from cvelistv5 – Published: 2021-10-18 13:44 – Updated: 2024-08-04 03:22
VLAI
Summary
The gmp plugin in strongSwan before 5.9.4 has a remote integer overflow via a crafted certificate with an RSASSA-PSS signature. For example, this can be triggered by an unrelated self-signed CA certificate sent by an initiator. Remote code execution cannot occur.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/strongswan/strongswan/releases… | x_refsource_MISC |
| https://www.strongswan.org/blog/2021/10/18/strong… | x_refsource_CONFIRM |
| https://www.debian.org/security/2021/dsa-4989 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
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CVE-2021-41991 (GCVE-0-2021-41991)
Vulnerability from cvelistv5 – Published: 2021-10-18 13:44 – Updated: 2024-08-04 03:22
VLAI
Summary
The in-memory certificate cache in strongSwan before 5.9.4 has a remote integer overflow upon receiving many requests with different certificates to fill the cache and later trigger the replacement of cache entries. The code attempts to select a less-often-used cache entry by means of a random number generator, but this is not done correctly. Remote code execution might be a slight possibility.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/strongswan/strongswan/releases… | x_refsource_MISC |
| https://www.strongswan.org/blog/2021/10/18/strong… | x_refsource_CONFIRM |
| https://www.debian.org/security/2021/dsa-4989 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
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CVE-2019-10155 (GCVE-0-2019-10155)
Vulnerability from cvelistv5 – Published: 2019-06-12 13:51 – Updated: 2024-08-04 22:10
VLAI
Summary
The Libreswan Project has found a vulnerability in the processing of IKEv1 informational exchange packets which are encrypted and integrity protected using the established IKE SA encryption and integrity keys, but as a receiver, the integrity check value was not verified. This issue affects versions before 3.29.
Severity
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://libreswan.org/security/CVE-2019-10155/ | x_refsource_MISC |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://access.redhat.com/errata/RHSA-2019:3391 | vendor-advisoryx_refsource_REDHAT |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| the libreswan Project | libreswan |
Affected:
3.29
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CVE-2018-17540 (GCVE-0-2018-17540)
Vulnerability from cvelistv5 – Published: 2018-10-03 20:00 – Updated: 2024-08-05 10:54
VLAI
Summary
The gmp plugin in strongSwan before 5.7.1 has a Buffer Overflow via a crafted certificate.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://www.debian.org/security/2018/dsa-4309 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.debian.org/debian-lts-announce/2018… | mailing-listx_refsource_MLIST |
| https://www.strongswan.org/blog/2018/10/01/strong… | x_refsource_CONFIRM |
| https://usn.ubuntu.com/3774-1/ | vendor-advisoryx_refsource_UBUNTU |
| https://download.strongswan.org/security/CVE-2018… | x_refsource_CONFIRM |
| https://security.gentoo.org/glsa/201811-16 | vendor-advisoryx_refsource_GENTOO |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
Date Public
2018-10-01 00:00
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VAR-202110-1670
Vulnerability from variot - Updated: 2025-09-21 20:02The in-memory certificate cache in strongSwan before 5.9.4 has a remote integer overflow upon receiving many requests with different certificates to fill the cache and later trigger the replacement of cache entries. The code attempts to select a less-often-used cache entry by means of a random number generator, but this is not done correctly. Remote code execution might be a slight possibility. strongSwan Exists in an integer overflow vulnerability.Service operation interruption (DoS) It may be in a state. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512
Debian Security Advisory DSA-4989-1 security@debian.org https://www.debian.org/security/ Yves-Alexis Perez October 18, 2021 https://www.debian.org/security/faq
Package : strongswan CVE ID : CVE-2021-41990 CVE-2021-41991
Researchers at the United States of America National Security Agency (NSA) identified two denial of services vulnerability in strongSwan, an IKE/IPsec suite.
CVE-2021-41990
RSASSA-PSS signatures whose parameters define a very high salt length can
trigger an integer overflow that can lead to a segmentation fault.
Generating a signature that bypasses the padding check to trigger the crash
requires access to the private key that signed the certificate. However,
the certificate does not have to be trusted. Because the gmp and the
openssl plugins both check if a parsed certificate is self-signed (and the
signature is valid), this can e.g. be triggered by an unrelated
self-signed CA certificate sent by an initiator. Depending on the generated random value, this could
lead to an integer overflow that results in a double-dereference and a call
using out-of-bounds memory that most likely leads to a segmentation fault.
Remote code execution can't be ruled out completely, but attackers have no
control over the dereferenced memory, so it seems unlikely at this point.
For the oldstable distribution (buster), these problems have been fixed in version 5.7.2-1+deb10u1.
For the stable distribution (bullseye), these problems have been fixed in version 5.9.1-1+deb11u1.
We recommend that you upgrade your strongswan packages.
For the detailed security status of strongswan please refer to its security tracker page at: https://security-tracker.debian.org/tracker/strongswan
Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE-----
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https://security.gentoo.org/
Severity: Normal Title: strongSwan: Multiple Vulnerabilities Date: May 04, 2024 Bugs: #818841, #832460, #878887, #899964 ID: 202405-08
Synopsis
Multiple vulnerabilities have been discovered in strongSwan, the worst of which could possibly lead to remote code execution.
Background
strongSwan is an IPSec implementation for Linux.
Affected packages
Package Vulnerable Unaffected
net-vpn/strongswan < 5.9.10 >= 5.9.10
Description
Multiple vulnerabilities have been discovered in strongSwan. Please review the CVE identifiers referenced below for details.
Impact
Please review the referenced CVE identifiers for details.
Workaround
There is no known workaround at this time.
Resolution
All strongSwan users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-vpn/strongswan-5.9.10"
References
[ 1 ] CVE-2021-41991 https://nvd.nist.gov/vuln/detail/CVE-2021-41991 [ 2 ] CVE-2021-45079 https://nvd.nist.gov/vuln/detail/CVE-2021-45079 [ 3 ] CVE-2022-40617 https://nvd.nist.gov/vuln/detail/CVE-2022-40617 [ 4 ] CVE-2023-26463 https://nvd.nist.gov/vuln/detail/CVE-2023-26463
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/202405-08
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2024 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
https://creativecommons.org/licenses/by-sa/2.5 . ========================================================================== Ubuntu Security Notice USN-5111-1 October 19, 2021
strongswan vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 21.10
- Ubuntu 21.04
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in strongSwan.
Software Description: - strongswan: IPsec VPN solution
Details:
It was discovered that strongSwan incorrectly handled certain RSASSA-PSS signatures. A remote attacker could use this issue to cause strongSwan to crash, resulting in a denial of service. (CVE-2021-41990)
It was discovered that strongSwan incorrectly handled replacing certificates in the cache. A remote attacker could use this issue to cause strongSwan to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-41991)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10: libstrongswan 5.9.1-1ubuntu3.1 strongswan 5.9.1-1ubuntu3.1
Ubuntu 21.04: libstrongswan 5.9.1-1ubuntu1.2 strongswan 5.9.1-1ubuntu1.2
Ubuntu 20.04 LTS: libstrongswan 5.8.2-1ubuntu3.3 strongswan 5.8.2-1ubuntu3.3
Ubuntu 18.04 LTS: libstrongswan 5.6.2-1ubuntu2.7 strongswan 5.6.2-1ubuntu2.7
In general, a standard system update will make all the necessary changes.
References: https://ubuntu.com/security/notices/USN-5111-1 CVE-2021-41990, CVE-2021-41991
Package Information: https://launchpad.net/ubuntu/+source/strongswan/5.9.1-1ubuntu3.1 https://launchpad.net/ubuntu/+source/strongswan/5.9.1-1ubuntu1.2 https://launchpad.net/ubuntu/+source/strongswan/5.8.2-1ubuntu3.3 https://launchpad.net/ubuntu/+source/strongswan/5.6.2-1ubuntu2.7
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"data": "The in-memory certificate cache in strongSwan before 5.9.4 has a remote integer overflow upon receiving many requests with different certificates to fill the cache and later trigger the replacement of cache entries. The code attempts to select a less-often-used cache entry by means of a random number generator, but this is not done correctly. Remote code execution might be a slight possibility. strongSwan Exists in an integer overflow vulnerability.Service operation interruption (DoS) It may be in a state. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA512\n\n- -------------------------------------------------------------------------\nDebian Security Advisory DSA-4989-1 security@debian.org\nhttps://www.debian.org/security/ Yves-Alexis Perez\nOctober 18, 2021 https://www.debian.org/security/faq\n- -------------------------------------------------------------------------\n\nPackage : strongswan\nCVE ID : CVE-2021-41990 CVE-2021-41991\n\nResearchers at the United States of America National Security Agency (NSA)\nidentified two denial of services vulnerability in strongSwan, an IKE/IPsec\nsuite. \n\nCVE-2021-41990\n\n RSASSA-PSS signatures whose parameters define a very high salt length can\n trigger an integer overflow that can lead to a segmentation fault. \n Generating a signature that bypasses the padding check to trigger the crash\n requires access to the private key that signed the certificate. However,\n the certificate does not have to be trusted. Because the gmp and the\n openssl plugins both check if a parsed certificate is self-signed (and the\n signature is valid), this can e.g. be triggered by an unrelated\n self-signed CA certificate sent by an initiator. Depending on the generated random value, this could\n lead to an integer overflow that results in a double-dereference and a call\n using out-of-bounds memory that most likely leads to a segmentation fault. \n Remote code execution can\u0027t be ruled out completely, but attackers have no\n control over the dereferenced memory, so it seems unlikely at this point. \n\nFor the oldstable distribution (buster), these problems have been fixed\nin version 5.7.2-1+deb10u1. \n\nFor the stable distribution (bullseye), these problems have been fixed in\nversion 5.9.1-1+deb11u1. \n\nWe recommend that you upgrade your strongswan packages. \n\nFor the detailed security status of strongswan please refer to\nits security tracker page at:\nhttps://security-tracker.debian.org/tracker/strongswan\n\nFurther information about Debian Security Advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://www.debian.org/security/\n\nMailing list: debian-security-announce@lists.debian.org\n-----BEGIN PGP SIGNATURE-----\n\niQEzBAEBCgAdFiEE8vi34Qgfo83x35gF3rYcyPpXRFsFAmFtyAUACgkQ3rYcyPpX\nRFudiwf+NNcRRRJychLI5ycMKVxkr2tEAJDeVZjv966YBM1tXnCtROydXf5Zip2M\ndn/EYO71uuT5FKhs8tJyx5iv2bFcrvyqQQo6DFQvXZHR0+9U+MHcR9qB7JJDM4nK\n+JXOEmAv3akCFhiP6jMx5B6jRWR1e4MOwxmgrgGu/nwy2cYBQPI43qPTrXi3Fcnv\neSgeyLqyZNLmaGmj8jQfTnc8bdVF5xAs6mHhVqNJxQCdouG9b4/S6AxJsl3IMxyF\nWZhtCNUvhHH8wz0lZVElR3Qs6fUu0phKdlT9kBv/o6fP3ceiYOCEh8SqBgYU3hQL\nxyB0uP4EcSR70TvKZMB2jV/tGG1A8w==\n=/Xvi\n-----END PGP SIGNATURE-----\n. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\nGentoo Linux Security Advisory GLSA 202405-08\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n https://security.gentoo.org/\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n\n Severity: Normal\n Title: strongSwan: Multiple Vulnerabilities\n Date: May 04, 2024\n Bugs: #818841, #832460, #878887, #899964\n ID: 202405-08\n\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n\nSynopsis\n=======\nMultiple vulnerabilities have been discovered in strongSwan, the worst\nof which could possibly lead to remote code execution. \n\nBackground\n=========\nstrongSwan is an IPSec implementation for Linux. \n\nAffected packages\n================\nPackage Vulnerable Unaffected\n------------------ ------------ ------------\nnet-vpn/strongswan \u003c 5.9.10 \u003e= 5.9.10\n\nDescription\n==========\nMultiple vulnerabilities have been discovered in strongSwan. Please\nreview the CVE identifiers referenced below for details. \n\nImpact\n=====\nPlease review the referenced CVE identifiers for details. \n\nWorkaround\n=========\nThere is no known workaround at this time. \n\nResolution\n=========\nAll strongSwan users should upgrade to the latest version:\n\n # emerge --sync\n # emerge --ask --oneshot --verbose \"\u003e=net-vpn/strongswan-5.9.10\"\n\nReferences\n=========\n[ 1 ] CVE-2021-41991\n https://nvd.nist.gov/vuln/detail/CVE-2021-41991\n[ 2 ] CVE-2021-45079\n https://nvd.nist.gov/vuln/detail/CVE-2021-45079\n[ 3 ] CVE-2022-40617\n https://nvd.nist.gov/vuln/detail/CVE-2022-40617\n[ 4 ] CVE-2023-26463\n https://nvd.nist.gov/vuln/detail/CVE-2023-26463\n\nAvailability\n===========\nThis GLSA and any updates to it are available for viewing at\nthe Gentoo Security Website:\n\n https://security.gentoo.org/glsa/202405-08\n\nConcerns?\n========\nSecurity is a primary focus of Gentoo Linux and ensuring the\nconfidentiality and security of our users\u0027 machines is of utmost\nimportance to us. Any security concerns should be addressed to\nsecurity@gentoo.org or alternatively, you may file a bug at\nhttps://bugs.gentoo.org. \n\nLicense\n======\nCopyright 2024 Gentoo Foundation, Inc; referenced text\nbelongs to its owner(s). \n\nThe contents of this document are licensed under the\nCreative Commons - Attribution / Share Alike license. \n\nhttps://creativecommons.org/licenses/by-sa/2.5\n. ==========================================================================\nUbuntu Security Notice USN-5111-1\nOctober 19, 2021\n\nstrongswan vulnerabilities\n==========================================================================\n\nA security issue affects these releases of Ubuntu and its derivatives:\n\n- Ubuntu 21.10\n- Ubuntu 21.04\n- Ubuntu 20.04 LTS\n- Ubuntu 18.04 LTS\n\nSummary:\n\nSeveral security issues were fixed in strongSwan. \n\nSoftware Description:\n- strongswan: IPsec VPN solution\n\nDetails:\n\nIt was discovered that strongSwan incorrectly handled certain RSASSA-PSS\nsignatures. A remote attacker could use this issue to cause strongSwan to\ncrash, resulting in a denial of service. (CVE-2021-41990)\n\nIt was discovered that strongSwan incorrectly handled replacing\ncertificates in the cache. A remote attacker could use this issue to cause\nstrongSwan to crash, resulting in a denial of service, or possibly execute\narbitrary code. (CVE-2021-41991)\n\nUpdate instructions:\n\nThe problem can be corrected by updating your system to the following\npackage versions:\n\nUbuntu 21.10:\n libstrongswan 5.9.1-1ubuntu3.1\n strongswan 5.9.1-1ubuntu3.1\n\nUbuntu 21.04:\n libstrongswan 5.9.1-1ubuntu1.2\n strongswan 5.9.1-1ubuntu1.2\n\nUbuntu 20.04 LTS:\n libstrongswan 5.8.2-1ubuntu3.3\n strongswan 5.8.2-1ubuntu3.3\n\nUbuntu 18.04 LTS:\n libstrongswan 5.6.2-1ubuntu2.7\n strongswan 5.6.2-1ubuntu2.7\n\nIn general, a standard system update will make all the necessary changes. \n\nReferences:\n https://ubuntu.com/security/notices/USN-5111-1\n CVE-2021-41990, CVE-2021-41991\n\nPackage Information:\n https://launchpad.net/ubuntu/+source/strongswan/5.9.1-1ubuntu3.1\n https://launchpad.net/ubuntu/+source/strongswan/5.9.1-1ubuntu1.2\n https://launchpad.net/ubuntu/+source/strongswan/5.8.2-1ubuntu3.3\n https://launchpad.net/ubuntu/+source/strongswan/5.6.2-1ubuntu2.7\n",
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