CVE-2013-4123 (GCVE-0-2013-4123)
Vulnerability from cvelistv5 – Published: 2013-09-16 19:00 – Updated: 2024-09-17 03:48
VLAI
EPSS
VEX
Summary
client_side_request.cc in Squid 3.2.x before 3.2.13 and 3.3.x before 3.3.8 allows remote attackers to cause a denial of service via a crafted port number in a HTTP Host header.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
6 references
| URL | Tags |
|---|---|
| http://secunia.com/advisories/54142 | third-party-advisoryx_refsource_SECUNIA |
| http://www.squid-cache.org/Versions/v3/3.3/change… | x_refsource_CONFIRM |
| http://www.squid-cache.org/Versions/v3/3.2/change… | x_refsource_CONFIRM |
| http://secunia.com/advisories/54834 | third-party-advisoryx_refsource_SECUNIA |
| http://www.squid-cache.org/Advisories/SQUID-2013_3.txt | x_refsource_CONFIRM |
| http://lists.opensuse.org/opensuse-updates/2013-0… | vendor-advisoryx_refsource_SUSE |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-06T16:30:50.014Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"name": "54142",
"tags": [
"third-party-advisory",
"x_refsource_SECUNIA",
"x_transferred"
],
"url": "http://secunia.com/advisories/54142"
},
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "http://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12591.patch"
},
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11826.patch"
},
{
"name": "54834",
"tags": [
"third-party-advisory",
"x_refsource_SECUNIA",
"x_transferred"
],
"url": "http://secunia.com/advisories/54834"
},
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "http://www.squid-cache.org/Advisories/SQUID-2013_3.txt"
},
{
"name": "openSUSE-SU-2013:1435",
"tags": [
"vendor-advisory",
"x_refsource_SUSE",
"x_transferred"
],
"url": "http://lists.opensuse.org/opensuse-updates/2013-09/msg00024.html"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "client_side_request.cc in Squid 3.2.x before 3.2.13 and 3.3.x before 3.3.8 allows remote attackers to cause a denial of service via a crafted port number in a HTTP Host header."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "n/a",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2013-09-16T19:00:00.000Z",
"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"shortName": "redhat"
},
"references": [
{
"name": "54142",
"tags": [
"third-party-advisory",
"x_refsource_SECUNIA"
],
"url": "http://secunia.com/advisories/54142"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "http://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12591.patch"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11826.patch"
},
{
"name": "54834",
"tags": [
"third-party-advisory",
"x_refsource_SECUNIA"
],
"url": "http://secunia.com/advisories/54834"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "http://www.squid-cache.org/Advisories/SQUID-2013_3.txt"
},
{
"name": "openSUSE-SU-2013:1435",
"tags": [
"vendor-advisory",
"x_refsource_SUSE"
],
"url": "http://lists.opensuse.org/opensuse-updates/2013-09/msg00024.html"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "secalert@redhat.com",
"ID": "CVE-2013-4123",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "n/a",
"version": {
"version_data": [
{
"version_value": "n/a"
}
]
}
}
]
},
"vendor_name": "n/a"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "client_side_request.cc in Squid 3.2.x before 3.2.13 and 3.3.x before 3.3.8 allows remote attackers to cause a denial of service via a crafted port number in a HTTP Host header."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "54142",
"refsource": "SECUNIA",
"url": "http://secunia.com/advisories/54142"
},
{
"name": "http://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12591.patch",
"refsource": "CONFIRM",
"url": "http://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12591.patch"
},
{
"name": "http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11826.patch",
"refsource": "CONFIRM",
"url": "http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11826.patch"
},
{
"name": "54834",
"refsource": "SECUNIA",
"url": "http://secunia.com/advisories/54834"
},
{
"name": "http://www.squid-cache.org/Advisories/SQUID-2013_3.txt",
"refsource": "CONFIRM",
"url": "http://www.squid-cache.org/Advisories/SQUID-2013_3.txt"
},
{
"name": "openSUSE-SU-2013:1435",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-updates/2013-09/msg00024.html"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2013-4123",
"datePublished": "2013-09-16T19:00:00.000Z",
"dateReserved": "2013-06-12T00:00:00.000Z",
"dateUpdated": "2024-09-17T03:48:39.055Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2013-4123",
"date": "2026-09-24",
"epss": "0.80451",
"percentile": "0.99612"
},
"nvd": {
"cve": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.3.0:*:*:*:*:*:*:*",
"matchCriteriaId": "728DD64E-C267-475A-BEA8-C139581DD7A7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.3.0.2:*:*:*:*:*:*:*",
"matchCriteriaId": "4CE8F3F5-45A2-418A-9D8E-4E6DFC888BC6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.3.0.3:*:*:*:*:*:*:*",
"matchCriteriaId": "7F4845D4-40D9-431E-A63C-E949B9D9F959",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.3.1:*:*:*:*:*:*:*",
"matchCriteriaId": "9EF070E6-0B73-4F6D-8932-B284697FCD2E",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.3.2:*:*:*:*:*:*:*",
"matchCriteriaId": "6E07992B-92B4-4307-8DBD-085376C1D6DD",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.3.3:*:*:*:*:*:*:*",
"matchCriteriaId": "386550A3-A55B-4F24-9625-6A50260ADA72",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.3.4:*:*:*:*:*:*:*",
"matchCriteriaId": "810D1F9E-81E5-45F0-B62B-AB0A797FF8B0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.3.5:*:*:*:*:*:*:*",
"matchCriteriaId": "4673327A-1E50-47CC-AD83-6A3D2E687292",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.3.6:*:*:*:*:*:*:*",
"matchCriteriaId": "6624AF2D-9EF0-4597-B8B2-20D7A309EA6F",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.3.7:*:*:*:*:*:*:*",
"matchCriteriaId": "E9F75D13-ED59-42A9-A662-AC77DBA20903",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*",
"matchCriteriaId": "DFBF430B-0832-44B0-AA0E-BA9E467F7668",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.1:*:*:*:*:*:*:*",
"matchCriteriaId": "6DFAB3BA-BBE9-4CFB-BE6B-BDF3E7772E7F",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.2:*:*:*:*:*:*:*",
"matchCriteriaId": "C9F523B8-463E-4FB0-ACB6-E36AAAF85CD9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.3:*:*:*:*:*:*:*",
"matchCriteriaId": "5BA593D9-907D-4051-A3F2-0F88F01A7C79",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.4:*:*:*:*:*:*:*",
"matchCriteriaId": "20D2B364-B98A-4484-A10A-86AF43774096",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.5:*:*:*:*:*:*:*",
"matchCriteriaId": "0B7BF076-0D43-407A-86DC-D1163922A787",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.6:*:*:*:*:*:*:*",
"matchCriteriaId": "AA576F49-A7F5-4013-89DF-F6C91C15B547",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.7:*:*:*:*:*:*:*",
"matchCriteriaId": "5D3F52FE-FFB3-4221-8DC7-3F5680A07429",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.8:*:*:*:*:*:*:*",
"matchCriteriaId": "604FEF42-ABA7-42C1-8A5F-C3AECFD68481",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.9:*:*:*:*:*:*:*",
"matchCriteriaId": "DC2568C1-89CB-41C1-9126-A8665614D0B1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.10:*:*:*:*:*:*:*",
"matchCriteriaId": "C18B5392-3FDB-49E6-89DB-7945D337FBFB",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.11:*:*:*:*:*:*:*",
"matchCriteriaId": "BA9E0E7F-E93C-4DE9-8D91-5EE50BCFAC2A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.12:*:*:*:*:*:*:*",
"matchCriteriaId": "0BFF9D8B-343B-415D-8AF8-B07AF94CC48B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.13:*:*:*:*:*:*:*",
"matchCriteriaId": "16F5794B-BBFB-4B12-9A0B-88A0334681C7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.14:*:*:*:*:*:*:*",
"matchCriteriaId": "17D0083E-8D50-4DC6-979F-685D5CB588AF",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.15:*:*:*:*:*:*:*",
"matchCriteriaId": "138FAD73-1D25-4F46-B9EA-599FF0EDA1AA",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.16:*:*:*:*:*:*:*",
"matchCriteriaId": "2CE34DC1-F654-474E-B6A3-D81B9BF4D6CF",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.17:*:*:*:*:*:*:*",
"matchCriteriaId": "8A4BF7AC-7D9F-40D8-A5AA-BE1EBF37CF96",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.18:*:*:*:*:*:*:*",
"matchCriteriaId": "643E8B9B-C3F4-4171-BF67-D9359BDCE5CB",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.0.19:*:*:*:*:*:*:*",
"matchCriteriaId": "A73CBC60-1EF1-4730-9350-EB51F269695B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.1:*:*:*:*:*:*:*",
"matchCriteriaId": "2721E403-A553-492F-897F-1CD1E2685139",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.2:*:*:*:*:*:*:*",
"matchCriteriaId": "85B091C4-8104-4A1E-A09D-EBCD114DC829",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.3:*:*:*:*:*:*:*",
"matchCriteriaId": "FA2EDF9C-45AD-4980-8DEF-C7F473B22CAF",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.4:*:*:*:*:*:*:*",
"matchCriteriaId": "BE4B8448-49FA-491C-A6A2-040233D670B1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.5:*:*:*:*:*:*:*",
"matchCriteriaId": "11480BB1-874C-48EB-BB03-081313310608",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.6:*:*:*:*:*:*:*",
"matchCriteriaId": "1B739890-99E8-434C-97D4-3739E6C31838",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.7:*:*:*:*:*:*:*",
"matchCriteriaId": "0C7B1871-3C85-4B88-AB42-E60BF5CDFB04",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.8:*:*:*:*:*:*:*",
"matchCriteriaId": "0A71DCD2-0E54-46A7-8309-CDB0736AD5C1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.9:*:*:*:*:*:*:*",
"matchCriteriaId": "CD54BDDF-F7A8-4715-BA0E-4E7F741492FE",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.10:*:*:*:*:*:*:*",
"matchCriteriaId": "9A2B9699-6622-4883-BA03-E3374C54871A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.11:*:*:*:*:*:*:*",
"matchCriteriaId": "78391DAF-2096-4DC4-80E4-D4D2859DCA32",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:squid-cache:squid:3.2.12:*:*:*:*:*:*:*",
"matchCriteriaId": "9B062A06-31C1-4B23-B7BD-9F751ABD6A37",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "client_side_request.cc in Squid 3.2.x before 3.2.13 and 3.3.x before 3.3.8 allows remote attackers to cause a denial of service via a crafted port number in a HTTP Host header."
},
{
"lang": "es",
"value": "client_side_request.cc en Squid 3.2.x anteriores a 3.2.13 y 3.3.x anteriores a 3.3.8 permite a un atacante remoto causar una denegaci\u00f3n de servicio a trav\u00e9s de un n\u00famero de puerto manipulado en una cabecera HTTP Host."
}
],
"id": "CVE-2013-4123",
"lastModified": "2026-04-29T01:13:23.040",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2013-09-16T19:14:38.397",
"references": [
{
"source": "secalert@redhat.com",
"url": "http://lists.opensuse.org/opensuse-updates/2013-09/msg00024.html"
},
{
"source": "secalert@redhat.com",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/54142"
},
{
"source": "secalert@redhat.com",
"url": "http://secunia.com/advisories/54834"
},
{
"source": "secalert@redhat.com",
"tags": [
"Vendor Advisory"
],
"url": "http://www.squid-cache.org/Advisories/SQUID-2013_3.txt"
},
{
"source": "secalert@redhat.com",
"tags": [
"Patch"
],
"url": "http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11826.patch"
},
{
"source": "secalert@redhat.com",
"url": "http://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12591.patch"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-updates/2013-09/msg00024.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/54142"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/54834"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://www.squid-cache.org/Advisories/SQUID-2013_3.txt"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11826.patch"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12591.patch"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-11-21T12:39:20+00:00",
"cve": "CVE-2013-4123",
"id": "CVE-2013-4123",
"initial_release_date": "2013-07-13T00:00:00+00:00",
"product_status:known_not_affected": "7",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "squid: Denial of service when processing specially-crafted HTTP requests (SQUID-2013:3)",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2013/cve-2013-4123.json",
"version": "3"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…