CVE-2011-4415 · cross-distro fix matrix

CVE-2011-4415: The ap_pregsub function in server/util.c in the Apache HTTP Server 2.0.x through 2.0.64 and 2.2.x through 2.2.21, when the mod_setenvif module is enabled, does not restrict the size of values of environment variables, which allows local users to cause a denial of service (memory consumption or NULL

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

Fix per ecosystem

Each block below is a distro release where CVE-2011-4415 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

apache2→ fixed in2.4.1-1urgency: unimportant

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

Debian bookworm

Source: Debian Security Tracker

apache2→ fixed in2.4.1-1urgency: unimportant

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

Debian trixie

Source: Debian Security Tracker

apache2→ fixed in2.4.1-1urgency: unimportant

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

Are YOU affected by CVE-2011-4415?

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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