Inconsistent interpretation of HTTP requests in Squid - CVE-2023-46846

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Main Vulnerability Database Vulnerabilities #VU82315

Inconsistent interpretation of HTTP requests in Squid - CVE-2023-46846

Published: October 24, 2023 / Updated: November 7, 2023


Vulnerability identifier: #VU82315
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-46846
CWE-ID: CWE-444
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform HTTP request smuggling attacks.

The vulnerability exists due to improper validation of HTTP requests when parsing HTTP/1.1 and ICAP messages. A remote attacker can send a specially crafted HTTP request to the server and smuggle arbitrary HTTP headers.

Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.


Affected software

Squid
Amazon Linux AMI
Debian Linux
Oracle Linux
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE CaaS Platform
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
Anolis OS
SUSE Enterprise Storage
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS
SUSE Linux Enterprise Server 15 SP1 LTSS
SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP3 LTSS
Server Applications Module
openSUSE Leap
openEuler
Ubuntu
Fedora
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
libecap-devel
libecap
squid-sysvinit
squid
squid-migration-script
squid (Red Hat package)
squid-debugsource
squid-debuginfo
squid (Ubuntu package)
squid (Debian package)
squid-doc
QNAP Proxy Server
Session Smart Router

How to mitigate CVE-2023-46846

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
QNAP Proxy Server - update to 1.4.6
squid-sysvinit - update to 3.5.20-17
squid - addressed in versions 3.5.20-17, 4.15-6, 6.5-1
squid-migration-script - update to 3.5.20-17
squid (Red Hat package) - addressed in versions 3.5.20-17.el7_9.13, 5.2-1.el9_0.3, 5.5-5.el9_2.1, 5.5-6.el9_3.1
squid - addressed in versions 3.5.20-17.55, 5.8-1
squid-debugsource - update to 4.9-14
squid-debuginfo - update to 4.9-14
squid - update to 4.9-14
squid (Ubuntu package) - addressed in versions 4.10-1ubuntu1.8, 5.7-0ubuntu0.22.04.2, 5.7-1ubuntu3.1, 6.1-2ubuntu1.1
squid (Debian package) - addressed in versions 4.13-10+deb11u3, 5.7-2+deb12u1
squid-debugsource - addressed in versions 4.17-4.30.1, 4.17-150000.5.38.1, 5.7-150400.3.12.1
squid-debuginfo - addressed in versions 4.17-4.30.1, 4.17-150000.5.38.1, 5.7-150400.3.12.1
squid - addressed in versions 4.17-4.30.1, 4.17-150000.5.38.1, 5.7-150400.3.12.1
Session Smart Router - addressed in versions 6.2.10, 6.3.7
squid - addressed in versions 6.4-1.fc37, 6.4-1.fc38, 6.4-1.fc39
squid-doc - update to 6.5-1

External References

Related Security Bulletins