CVE-2011-4577 · cross-distro fix matrix

CVE-2011-4577: OpenSSL before 0.9.8s and 1.x before 1.0.0f, when RFC 3779 support is enabled, allows remote attackers to cause a denial of service (assertion failure) via an X.509 certificate containing certificate-extension data associated with (1) IP address blocks or (2) Autonomous System (AS) identifiers.

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

Fix per ecosystem

Each block below is a distro release where CVE-2011-4577 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

openssl→ fixed in1.0.0f-1urgency: unimportant

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

Debian bookworm

Source: Debian Security Tracker

openssl→ fixed in1.0.0f-1urgency: unimportant

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

Debian trixie

Source: Debian Security Tracker

openssl→ fixed in1.0.0f-1urgency: unimportant

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

Are YOU affected by CVE-2011-4577?

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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