Ubuntu LTS: Asterisk Severe Internal Security Flaw 2025-1132

CVE-2025-1131

A local privilege escalation vulnerability exists in the safe_asterisk
script included with the Asterisk toolkit package. When Asterisk is started
via this script, it sources all .sh files located in
/etc/asterisk/startup.d/ as root, without validating ownership or
permissions. Non-root users with legitimate write access to /etc/asterisk
can exploit this behaviour by placing malicious scripts in the startup.d
directory, which will then execute with root privileges upon service
restart. Default Debian installations are not affected by this problem.

CVE-2025-54995

Prior to this version, RTP UDP ports and internal resources can leak due to
a lack of session termination. This could result in resource exhaustion.


For Debian 11 bullseye, these problems have been fixed in version
1:16.28.0~dfsg-0+deb11u8.

We recommend that you upgrade your asterisk packages.

For the detailed security status of asterisk please refer to
its security tracker page at: