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Debian LTS Advisory DLA-4206-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Markus Koschany
June 02, 2025 https://wiki.debian.org/LTS
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Package : asterisk
Version : 1:16.28.0~dfsg-0+deb11u7
CVE ID : CVE-2025-47779 CVE-2025-47780
Debian Bug : 1106528 1106530
Two security vulnerabilities have been discovered in Asterisk, an Open
Source Private Branch Exchange.
CVE-2025-47779
SIP requests of the type MESSAGE (RFC 3428) authentication do not get
proper alignment. An authenticated attacker can spoof any user identity to
send spam messages to the user with their authorization token. Abuse of
this security issue allows authenticated attackers to send fake chat
messages that can be spoofed to appear to come from trusted entities.
CVE-2025-47780
Trying to disallow shell commands to be run via the Asterisk CLI by
configuring cli_permissions.conf (e.g. with the config line deny=!*) does
not work which could lead to a security risk.
A new asterisk.conf option 'disable_remote_console_shell' has been added
that, when set, will prevent remote consoles from executing shell commands
using the '!' prefix.
For Debian 11 bullseye, these problems have been fixed in version
1:16.28.0~dfsg-0+deb11u7.
We recommend that you upgrade your asterisk packages.
For the detailed security status of asterisk please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/asterisk
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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