GSD-2021-28116
Vulnerability from gsd - Updated: 2023-12-13 01:23Details
Squid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure because of an out-of-bounds read in WCCP protocol data. This can be leveraged as part of a chain for remote code execution as nobody.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-28116",
"description": "Squid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure because of an out-of-bounds read in WCCP protocol data. This can be leveraged as part of a chain for remote code execution as nobody.",
"id": "GSD-2021-28116",
"references": [
"https://www.suse.com/security/cve/CVE-2021-28116.html",
"https://ubuntu.com/security/CVE-2021-28116",
"https://advisories.mageia.org/CVE-2021-28116.html",
"https://security.archlinux.org/CVE-2021-28116",
"https://linux.oracle.com/cve/CVE-2021-28116.html",
"https://access.redhat.com/errata/RHSA-2022:1939",
"https://www.debian.org/security/2022/dsa-5171"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2021-28116"
],
"details": "Squid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure because of an out-of-bounds read in WCCP protocol data. This can be leveraged as part of a chain for remote code execution as nobody.",
"id": "GSD-2021-28116",
"modified": "2023-12-13T01:23:29.346733Z",
"schema_version": "1.4.0"
}
},
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"STATE": "PUBLIC"
},
"affects": {
"vendor": {
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{
"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": {
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"value": "Squid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure because of an out-of-bounds read in WCCP protocol data. This can be leveraged as part of a chain for remote code execution as nobody."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AC:H/AV:N/A:N/C:L/I:N/PR:N/S:U/UI:N",
"version": "3.1"
}
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},
"references": {
"reference_data": [
{
"name": "http://www.squid-cache.org/Versions/",
"refsource": "MISC",
"url": "http://www.squid-cache.org/Versions/"
},
{
"name": "https://www.zerodayinitiative.com/advisories/ZDI-21-157/",
"refsource": "MISC",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-157/"
},
{
"name": "https://github.com/squid-cache/squid/security/advisories/GHSA-rgf3-9v3p-qp82",
"refsource": "MISC",
"url": "https://github.com/squid-cache/squid/security/advisories/GHSA-rgf3-9v3p-qp82"
},
{
"name": "GLSA-202105-14",
"refsource": "GENTOO",
"url": "https://security.gentoo.org/glsa/202105-14"
},
{
"name": "FEDORA-2021-c0bec55ec7",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/"
},
{
"name": "FEDORA-2021-24af72ff2c",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/"
},
{
"name": "[oss-security] 20211004 CVE-2021-28116 / ZDI-CAN-11610 / SQUID-2020:12 Out-Of-Bounds memory access in WCCPv2",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2021/10/04/1"
},
{
"name": "DSA-5171",
"refsource": "DEBIAN",
"url": "https://www.debian.org/security/2022/dsa-5171"
}
]
}
},
"nvd.nist.gov": {
"configurations": {
"CVE_data_version": "4.0",
"nodes": [
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndIncluding": "4.14",
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndIncluding": "5.0.5",
"versionStartIncluding": "5.0",
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}
],
"operator": "OR"
},
{
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"cpe_match": [
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"cpe_name": [],
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{
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"cpe_name": [],
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],
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},
{
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"cpe_match": [
{
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"cpe_name": [],
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},
{
"cpe23Uri": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
"cpe_name": [],
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}
],
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}
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},
"cve": {
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},
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"description": {
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}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "en",
"value": "CWE-125"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/squid-cache/squid/security/advisories/GHSA-rgf3-9v3p-qp82",
"refsource": "MISC",
"tags": [
"Broken Link"
],
"url": "https://github.com/squid-cache/squid/security/advisories/GHSA-rgf3-9v3p-qp82"
},
{
"name": "http://www.squid-cache.org/Versions/",
"refsource": "MISC",
"tags": [
"Product",
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],
"url": "http://www.squid-cache.org/Versions/"
},
{
"name": "https://www.zerodayinitiative.com/advisories/ZDI-21-157/",
"refsource": "MISC",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-157/"
},
{
"name": "GLSA-202105-14",
"refsource": "GENTOO",
"tags": [
"Third Party Advisory"
],
"url": "https://security.gentoo.org/glsa/202105-14"
},
{
"name": "FEDORA-2021-24af72ff2c",
"refsource": "FEDORA",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/"
},
{
"name": "FEDORA-2021-c0bec55ec7",
"refsource": "FEDORA",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/"
},
{
"name": "[oss-security] 20211004 CVE-2021-28116 / ZDI-CAN-11610 / SQUID-2020:12 Out-Of-Bounds memory access in WCCPv2",
"refsource": "MLIST",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "http://www.openwall.com/lists/oss-security/2021/10/04/1"
},
{
"name": "DSA-5171",
"refsource": "DEBIAN",
"tags": [
"Third Party Advisory"
],
"url": "https://www.debian.org/security/2022/dsa-5171"
}
]
}
},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4
}
},
"lastModifiedDate": "2023-02-03T18:56Z",
"publishedDate": "2021-03-09T22:15Z"
}
}
}
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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.
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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.
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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.
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