Debian 11: DLA-4206-1 critical: asterisk authentication issue

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