CVE-2009-1957 · cross-distro fix matrix

CVE-2009-1957: charon/sa/ike_sa.c in the charon daemon in strongSWAN before 4.3.1 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via an invalid IKE_SA_INIT request that triggers "an incomplete state," followed by a CREATE_CHILD_SA request.

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

Fix per ecosystem

Each block below is a distro release where CVE-2009-1957 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

strongswan→ fixed in4.2.14-1.1urgency: medium

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

Debian bookworm

Source: Debian Security Tracker

strongswan→ fixed in4.2.14-1.1urgency: medium

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

Debian trixie

Source: Debian Security Tracker

strongswan→ fixed in4.2.14-1.1urgency: medium

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

Are YOU affected by CVE-2009-1957?

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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