VulnerabilityModified
CVE-2021-28651
Due to a buffer-management bug, it allows a denial of service.
HIGH 7.5EPSS 7.45%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (7.45%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount of memory. However, there is an unspecified attack methodology that can easily trigger a large amount of memory consumption.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 7.45% probability · 94th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-401
- Affected
- squid-cache/squid · debian/debian linux · fedoraproject/fedora · netapp/cloud manager
- Source
- cve@mitre.org
References
- http://seclists.org/fulldisclosure/2023/Oct/14Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2023/10/11/3Mailing List, Third Party Advisory
- https://bugs.squid-cache.org/show_bug.cgi?id=5104Exploit, Issue Tracking, Vendor Advisory
- https://github.com/squid-cache/squid/security/advisories/GHSA-ch36-9jhx-phm4Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/06/msg00014.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/
- https://security.netapp.com/advisory/ntap-20210716-0007/Third Party Advisory
- https://www.debian.org/security/2021/dsa-4924Third Party Advisory
- http://seclists.org/fulldisclosure/2023/Oct/14Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2023/10/11/3Mailing List, Third Party Advisory
- https://bugs.squid-cache.org/show_bug.cgi?id=5104Exploit, Issue Tracking, Vendor Advisory
- https://github.com/squid-cache/squid/security/advisories/GHSA-ch36-9jhx-phm4Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/06/msg00014.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/
- https://security.netapp.com/advisory/ntap-20210716-0007/Third Party Advisory
- https://www.debian.org/security/2021/dsa-4924Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.