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CVE-2012-4503 · cross-distro fix matrix

CVE-2012-4503: cmdmon.c in Chrony before 1.29 allows remote attackers to obtain potentially sensitive information from stack memory via vectors related to (1) an invalid subnet in a RPY_SUBNETS_ACCESSED command to the handle_subnets_accessed function or (2) a RPY_CLIENT_ACCESSES command to the handle_client_access

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

Fix per ecosystem

Each block below is a distro release where CVE-2012-4503 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • chrony→ fixed in1.29-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y chrony

Debian bookworm

Source: Debian Security Tracker

  • chrony→ fixed in1.29-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y chrony

Debian trixie

Source: Debian Security Tracker

  • chrony→ fixed in1.29-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y chrony
Are YOU affected by CVE-2012-4503?

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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