CVE-2023-46847

Squid: denial of service in http digest authentication

State: Published
Severity: 8.6 High
Published: Nov 3, 2023
Updated: Aug 7, 2026
Reserved: Oct 27, 2023

Description

Squid is vulnerable to a Denial of Service, where a remote attacker can perform buffer overflow attack by writing up to 2 MB of arbitrary data to heap memory when Squid is configured to accept HTTP Digest Authentication.

Scores

CVSS	Score	Vector	Source
3.1	8.6 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H	redhat

Weaknesses

CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Affected Products

Product	Versions
squid	3.2.0.1 to before 6.4Affected
Red Hat Enterprise Linux 6 Extended Lifecycle SupportRed Hat	7:3.4.14-15.el6_10.1 and laterNot affected
Red Hat Enterprise Linux 6 Extended Lifecycle SupportRed Hat	7:3.1.23-24.el6_10.1 and laterNot affected
Red Hat Enterprise Linux 7Red Hat	7:3.5.20-17.el7_9.9 and laterNot affected
Red Hat Enterprise Linux 7.6 Advanced Update SupportRed Hat	7:3.5.20-12.el7_6.2 and laterNot affected
Red Hat Enterprise Linux 7.7 Advanced Update SupportRed Hat	7:3.5.20-13.el7_7.1 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	8080020231030214932.63b34585 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	8090020231030224841.a75119d5 and laterNot affected
Red Hat Enterprise Linux 8.1 Update Services for SAP SolutionsRed Hat	8010020231101141358.c27ad7f8 and laterNot affected
Red Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat	8020020231101135052.4cda2c84 and laterNot affected
Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceRed Hat	8020020231101135052.4cda2c84 and laterNot affected
Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsRed Hat	8020020231101135052.4cda2c84 and laterNot affected
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat	8040020231101101624.522a0ee4 and laterNot affected
Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceRed Hat	8040020231101101624.522a0ee4 and laterNot affected
Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsRed Hat	8040020231101101624.522a0ee4 and laterNot affected
Red Hat Enterprise Linux 8.6 Extended Update SupportRed Hat	8060020231031165747.ad008a3a and laterNot affected
Red Hat Enterprise Linux 9Red Hat	7:5.5-5.el9_2.1 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	7:5.5-6.el9_3.1 and laterNot affected
Red Hat Enterprise Linux 9.0 Extended Update SupportRed Hat	7:5.2-1.el9_0.3 and laterNot affected

References

RHSA-2023:6266vendor-advisory
RHSA-2023:6267vendor-advisory
RHSA-2023:6268vendor-advisory
RHSA-2023:6748vendor-advisory
RHSA-2023:6801vendor-advisory
RHSA-2023:6803vendor-advisory
RHSA-2023:6804vendor-advisory
RHSA-2023:6805vendor-advisory
RHSA-2023:6810vendor-advisory
RHSA-2023:6882vendor-advisory
RHSA-2023:6884vendor-advisory
RHSA-2023:7213vendor-advisory
RHSA-2023:7576vendor-advisory
RHSA-2023:7578vendor-advisory
https://access.redhat.com/security/cve/CVE-2023-46847vdb-entry
RHBZ#2245916issue-tracking
https://github.com/squid-cache/squid/security/advisories/GHSA-phqj-m8gv-cq4g
https://lists.debian.org/debian-lts-announce/2024/01/msg00003.html
https://security.netapp.com/advisory/ntap-20231130-0002/

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.