CVE-2011-4869 · cross-distro fix matrix

CVE-2011-4869: validator/val_nsec3.c in Unbound before 1.4.13p2 does not properly perform proof processing for NSEC3-signed zones, which allows remote DNS servers to cause a denial of service (daemon crash) via a malformed response that lacks expected NSEC3 records, a different vulnerability than CVE-2011-4528.

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

Fix per ecosystem

Each block below is a distro release where CVE-2011-4869 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

unbound→ fixed in1.4.14-1urgency: medium

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

Debian bookworm

Source: Debian Security Tracker

unbound→ fixed in1.4.14-1urgency: medium

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

Debian trixie

Source: Debian Security Tracker

unbound→ fixed in1.4.14-1urgency: medium

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

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