Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Squid-Cache | Squid | >= 2.0, < 4.15 |
| Debian | Debian Linux | 9.0 |
| Fedoraproject | Fedora | 33 |
| Netapp | Cloud Manager | - |
Related Weaknesses (CWE)
References
- http://seclists.org/fulldisclosure/2023/Oct/14Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2023/10/11/3Mailing ListThird Party Advisory
- https://bugs.squid-cache.org/show_bug.cgi?id=5104ExploitIssue TrackingVendor Advisory
- https://github.com/squid-cache/squid/security/advisories/GHSA-ch36-9jhx-phm4PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/06/msg00014.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- 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 ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2023/10/11/3Mailing ListThird Party Advisory
- https://bugs.squid-cache.org/show_bug.cgi?id=5104ExploitIssue TrackingVendor Advisory
- https://github.com/squid-cache/squid/security/advisories/GHSA-ch36-9jhx-phm4PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/06/msg00014.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
FAQ
What is CVE-2021-28651?
CVE-2021-28651 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 smal...
How severe is CVE-2021-28651?
CVE-2021-28651 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-28651?
Check the references section above for vendor advisories and patch information. Affected products include: Squid-Cache Squid, Debian Debian Linux, Fedoraproject Fedora, Netapp Cloud Manager.