CVE-2009-3287 · cross-distro fix matrix

CVE-2009-3287: lib/thin/connection.rb in Thin web server before 1.2.4 relies on the X-Forwarded-For header to determine the IP address of the client, which allows remote attackers to spoof the IP address and hide activities via a modified X-Forwarded-For header.

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

Fix per ecosystem

Each block below is a distro release where CVE-2009-3287 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

thin→ fixed in1.2.4-1urgency: low

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

Debian bookworm

Source: Debian Security Tracker

thin→ fixed in1.2.4-1urgency: low

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

Debian trixie

Source: Debian Security Tracker

thin→ fixed in1.2.4-1urgency: low

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

Are YOU affected by CVE-2009-3287?

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.

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