high
8.6
CWE
119 120
Advisory Published
CVE Published
CVE Published
Updated

CVE-2023-46847: Squid: denial of service in http digest authentication

First published: Tue Oct 24 2023(Updated: )

Description: Due to a buffer overflow bug Squid is vulnerable to a Denial of Service attack against HTTP Digest Authentication Reference: <a href="https://github.com/squid-cache/squid/security/advisories/GHSA-phqj-m8gv-cq4g">https://github.com/squid-cache/squid/security/advisories/GHSA-phqj-m8gv-cq4g</a> Affected versions: 3.2.0.1-5.9, 6.0-6.3

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Squid-Cache Squid>=3.2.0.1<6.4
Redhat Enterprise Linux=8.0
Redhat Enterprise Linux=9.0
Redhat Enterprise Linux Eus=8.6
Redhat Enterprise Linux Eus=8.8
Redhat Enterprise Linux Eus=9.0
Redhat Enterprise Linux Eus=9.2
Redhat Enterprise Linux For Arm 64=8.0_aarch64
Redhat Enterprise Linux For Ibm Z Systems=8.0_s390x
Redhat Enterprise Linux For Power Little Endian=8.0_ppc64le
Redhat Enterprise Linux Server=7.0
Redhat Enterprise Linux Server Aus=8.2
Redhat Enterprise Linux Server Aus=8.4
Redhat Enterprise Linux Server Aus=8.6
Redhat Enterprise Linux Server Aus=9.2
Redhat Enterprise Linux Server Tus=8.2
Redhat Enterprise Linux Server Tus=8.4
Redhat Enterprise Linux Server Tus=8.6
Redhat Enterprise Linux Server Tus=8.8
Redhat Enterprise Linux Server Tus=9.2
Redhat Enterprise Linux Workstation=7.0
redhat/squid<6.4
6.4
ubuntu/squid<4.10-1ubuntu1.8
4.10-1ubuntu1.8
ubuntu/squid<5.7-0ubuntu0.22.04.2
5.7-0ubuntu0.22.04.2
ubuntu/squid<5.7-1ubuntu3.1
5.7-1ubuntu3.1
ubuntu/squid<6.1-2ubuntu1.1
6.1-2ubuntu1.1
ubuntu/squid<6.4
6.4
ubuntu/squid3<3.5.27-1ubuntu1.14+
3.5.27-1ubuntu1.14+
ubuntu/squid3<3.5.12-1ubuntu7.16+
3.5.12-1ubuntu7.16+
debian/squid<=4.6-1+deb10u7<=4.13-10+deb11u2<=5.7-2
4.6-1+deb10u10
4.13-10+deb11u3
5.7-2+deb12u1
6.9-1

Remedy

https://github.com/squid-cache/squid/commit/dc0e10bec3334053c1a5297e50dd7052ea18aef0

Remedy

https://github.com/squid-cache/squid/commit/052cf082b0faaef4eaaa4e94119d7a1437aac4a3

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2023-46847?

    CVE-2023-46847 is a vulnerability in Squid that allows a remote attacker to perform a denial of service attack through a buffer overflow in HTTP Digest Authentication.

  • How severe is CVE-2023-46847?

    CVE-2023-46847 has a severity rating of 9.9, which is classified as critical.

  • Which software versions are affected by CVE-2023-46847?

    The affected software versions include Squid up to version 6.4 and Squid-Cache versions 3.2.0.1 to 6.4.

  • How can I mitigate CVE-2023-46847?

    To mitigate CVE-2023-46847, update Squid to version 6.4 or apply the recommended patches provided by the vendor.

  • Where can I find more information about CVE-2023-46847?

    You can find more information about CVE-2023-46847 in the references: [GitHub Advisory](https://github.com/squid-cache/squid/security/advisories/GHSA-phqj-m8gv-cq4g), [Red Hat Bugzilla](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2245917), and [Red Hat Security Advisory](https://access.redhat.com/errata/RHSA-2023:6266).

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