CVE-2023-50269

Description

Squid is a caching proxy for the Web. Due to an Uncontrolled Recursion bug in versions 2.6 through 2.7.STABLE9, versions 3.1 through 5.9, and versions 6.0.1 through 6.5, Squid may be vulnerable to a Denial of Service attack against HTTP Request parsing. This problem allows a remote client to perform Denial of Service attack by sending a large X-Forwarded-For header when the follow_x_forwarded_for feature is configured. This bug is fixed by Squid version 6.6. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives.

How to fix CVE-2023-50269

To remediate CVE-2023-50269, upgrade the affected package to a fixed version below.

• —upgrade to 6.6-r0 or later
• —upgrade to 4.13-10+deb11u3 or later

Is CVE-2023-50269 being exploited?

Low — EPSS is 1.1%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• from 0, < 6.6-r0
• from 0, < 4.13-10+deb11u3

CVSS scores

References (2)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2023-50269
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2023-50269