Vulnerability Description
Squid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clients) via an HTTP response. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent by the server.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Squid-Cache | Squid | < 4.15 |
| Fedoraproject | Fedora | 33 |
| Debian | Debian Linux | 9.0 |
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
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-1e05a85bd28c22c9ca5d3aMailing ListPatchVendor Advisory
- http://www.squid-cache.org/Versions/v5/changesets/squid-5-8af775ed98bfd610f9ce76Mailing ListPatchVendor Advisory
- https://github.com/squid-cache/squid/security/advisories/GHSA-572g-rvwr-6c7fPatchThird 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
- http://seclists.org/fulldisclosure/2023/Oct/14Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2023/10/11/3Mailing ListThird Party Advisory
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-1e05a85bd28c22c9ca5d3aMailing ListPatchVendor Advisory
- http://www.squid-cache.org/Versions/v5/changesets/squid-5-8af775ed98bfd610f9ce76Mailing ListPatchVendor Advisory
- https://github.com/squid-cache/squid/security/advisories/GHSA-572g-rvwr-6c7fPatchThird 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-2021-33620?
CVE-2021-33620 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Squid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clients) via an HTTP response. The issue trigger is a header that can be expect...
How severe is CVE-2021-33620?
CVE-2021-33620 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-33620?
Check the references section above for vendor advisories and patch information. Affected products include: Squid-Cache Squid, Fedoraproject Fedora, Debian Debian Linux.