CVE-2009-4565 · cross-distro fix matrix

CVE-2009-4565: sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows

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

Fix per ecosystem

Each block below is a distro release where CVE-2009-4565 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

sendmail→ fixed in8.14.3-9.1urgency: medium

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

Debian bookworm

Source: Debian Security Tracker

sendmail→ fixed in8.14.3-9.1urgency: medium

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

Debian trixie

Source: Debian Security Tracker

sendmail→ fixed in8.14.3-9.1urgency: medium

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

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