Improper Handling of Structural Elements in Squid - CVE-2023-5824

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Main Vulnerability Database Vulnerabilities #VU82316

Improper Handling of Structural Elements in Squid - CVE-2023-5824

Published: October 24, 2023 / Updated: November 8, 2023


Vulnerability identifier: #VU82316
CSH Severity: Medium
CVSS v4: 8.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H]
CVE-ID: CVE-2023-5824
CWE-ID: CWE-237
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper handling of structural elements in HTTP response caching. A remote user can cause a denial of service condition on the target system.


Affected software

Squid
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
Amazon Linux AMI
Debian Linux
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server 15
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Anolis OS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
openSUSE Leap
openEuler
Ubuntu
Fedora
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
libecap-devel
libecap
squid
squid-debuginfo
squid-debugsource
squid (Red Hat package)
squid-doc
squid (Ubuntu package)
squid (Debian package)
QNAP Proxy Server

How to mitigate CVE-2023-5824

Install updates from vendor's website.

Squid - update to 6.4
libecap-devel - update to 1.0.1-2.0.1
libecap - update to 1.0.1-2.0.1
squid - addressed in versions 4.9-25, 4.9-29
squid-debuginfo - addressed in versions 4.9-25, 4.9-29
squid-debugsource - addressed in versions 4.9-25, 4.9-29
squid - addressed in versions 4.15-11, 6.5-1
squid (Red Hat package) - addressed in versions 5.2-1.el9_0.3, 5.2-1.el9_0.4, 5.5-5.el9_2.1, 5.5-6.el9_3.1, 5.5-6.el9_3.2
squid - update to 5.7-150400.3.41.1
squid-debuginfo - update to 5.7-150400.3.41.1
squid-debugsource - update to 5.7-150400.3.41.1
squid - addressed in versions 6.4-1.fc37, 6.4-1.fc38, 6.4-1.fc39
squid-doc - update to 6.5-1
squid - update to 6.6-1
QNAP Proxy Server - update to 1.4.6
squid (Ubuntu package) - addressed in versions 4.10-1ubuntu1.10, 4.10-1ubuntu1.11, 4.10-1ubuntu1.12, 5.7-0ubuntu0.22.04.4, 6.1-2ubuntu1.3
squid (Debian package) - update to 5.7-2+deb12u3

External References

Related Security Bulletins