security advisoryremote accessDebian Two security vulnerabilities have been discovered in Asterisk, an Open Source Private Branch Exchange. CVE-2025-47779 . ------------------------------------------------------------------------- Debian LTS Advisory DLA-4206-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://https://www.debian.org/lts/security/ Markus Koschany June 02, 2025 https://wiki.debian.org/LTS ------------------------------------------------------------------------- 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/source-package/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 . Recent findings highlight two severe flaws in Asterisk for Debian, manifesting via inadequate authentication and the risk of remote command execution.. asterisk security, Debian updates, security vulnerabilities. . Severity: Critical. LinuxSecurity.com Team
Jun 02, 2025 •Critical Debian LTS 
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