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CVE-2023-23009 · cross-distro fix matrix

CVE-2023-23009: Libreswan 4.9 allows remote attackers to cause a denial of service (assert failure and daemon restart) via crafted TS payload with an incorrect selector length.

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

Fix per ecosystem

Each block below is a distro release where CVE-2023-23009 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • libreswan→ fixed in4.3-1+deb11u3urgency: not yet assigned
    sudo apt-get install --only-upgrade -y libreswan

Debian bookworm

Source: Debian Security Tracker

  • libreswan→ fixed in4.9-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y libreswan

Debian trixie

Source: Debian Security Tracker

  • libreswan→ fixed in4.9-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y libreswan
Are YOU affected by CVE-2023-23009?

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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