CVE-2021-46784

In Squid 3.x through 3.5.28, 4.x through 4.17, and 5.x before 5.6, due to improper buffer management, a Denial of Service can occur when processing long Gopher server responses.

• CWE-617

• http://www.openwall.com/lists/oss-security/2023/10/13/1
• http://www.openwall.com/lists/oss-security/2023/10/13/10
• http://www.openwall.com/lists/oss-security/2023/10/21/1
• http://www.squid-cache.org/Versions/v4/changesets/SQUID-2021_7.patchBroken Link
• http://www.squid-cache.org/Versions/v5/changesets/SQUID-2021_7.patchPatch, Vendor Advisory
• https://github.com/squid-cache/squid/commit/5e2ea2b13bd98f53e29964ca26bb0d602a8a12b9Patch, Third Party Advisory
• https://github.com/squid-cache/squid/security/advisories/GHSA-f5cp-6rh3-284wMitigation, Patch, Third Party Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-46784Third Party Advisory
• https://security.netapp.com/advisory/ntap-20221223-0007/Third Party Advisory
• http://www.openwall.com/lists/oss-security/2023/10/13/1
• http://www.openwall.com/lists/oss-security/2023/10/13/10
• http://www.openwall.com/lists/oss-security/2023/10/21/1
• http://www.squid-cache.org/Versions/v4/changesets/SQUID-2021_7.patchBroken Link
• http://www.squid-cache.org/Versions/v5/changesets/SQUID-2021_7.patchPatch, Vendor Advisory
• https://github.com/squid-cache/squid/commit/5e2ea2b13bd98f53e29964ca26bb0d602a8a12b9Patch, Third Party Advisory
• https://github.com/squid-cache/squid/security/advisories/GHSA-f5cp-6rh3-284wMitigation, Patch, Third Party Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-46784Third Party Advisory
• https://security.netapp.com/advisory/ntap-20221223-0007/Third Party Advisory

Published

Jul 17, 2022

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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