CVE-2009-2855 · cross-distro fix matrix

CVE-2009-2855: The strListGetItem function in src/HttpHeaderTools.c in Squid 2.7 allows remote attackers to cause a denial of service via a crafted auth header with certain comma delimiters that trigger an infinite loop of calls to the strcspn function.

Affects 3 Linux releases across 3 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2009-2855 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

squid→ fixed in2.7.STABLE7-1urgency: low

sudo apt-get install --only-upgrade -y squid

Debian bookworm

Source: Debian Security Tracker

squid→ fixed in2.7.STABLE7-1urgency: low

sudo apt-get install --only-upgrade -y squid

Debian trixie

Source: Debian Security Tracker

squid→ fixed in2.7.STABLE7-1urgency: low

sudo apt-get install --only-upgrade -y squid

Are YOU affected by CVE-2009-2855?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash

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