CVE-2016-4975 · cross-distro fix matrix

CVE-2016-4975: Possible CRLF injection allowing HTTP response splitting attacks for sites which use mod_userdir. This issue was mitigated by changes made in 2.4.25 and 2.2.32 which prohibit CR or LF injection into the "Location" or other outbound header key or value. Fixed in Apache HTTP Server 2.4.25 (Affected 2.

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

Fix per ecosystem

Each block below is a distro release where CVE-2016-4975 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

apache2→ fixed in2.4.25-1urgency: low

sudo apt-get install --only-upgrade -y apache2

Debian bookworm

Source: Debian Security Tracker

apache2→ fixed in2.4.25-1urgency: low

sudo apt-get install --only-upgrade -y apache2

Debian trixie

Source: Debian Security Tracker

apache2→ fixed in2.4.25-1urgency: low

sudo apt-get install --only-upgrade -y apache2

Are YOU affected by CVE-2016-4975?

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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