The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-98decbde87 advisory.

    Update to Asterisk 18.26.4, addressing numerous security vulnerabilities     accumulated since the long-stale 18.12.1 package. The following CVEs are fixed     in this update:

    - CVE-2022-26498 (fixed in 18.13.0): use-after-free in chan_ooh323
    - CVE-2022-42705 (fixed in 18.15.0): use-after-free in res_pjsip_pubsub
    - CVE-2022-37325 (fixed in 18.15.1): crash in H323 channel via malformed IE
    - CVE-2023-37457 (fixed in 18.20.0): buffer overflow in PJSIP_HEADER function
    - CVE-2023-49294 (fixed in 18.20.1): arbitrary file read via AMI GetConfig
    - CVE-2023-49786 (fixed in 18.20.1): DTLS race condition causing DoS
    - CVE-2024-35190 (fixed in 18.23.1): unauthorized SIP requests matched as endpoint
    - CVE-2024-42365 (fixed in 18.24.2): Write=originate allows code execution
    - CVE-2024-42491 (fixed in 18.25.0): crash via malformed Contact/Record-Route URI
    - CVE-2025-49832 (fixed in 18.26.3): DoS/RCE in res_stir_shaken
    - CVE-2025-47779 (fixed in 18.26.2): identity forging via malformed From header
    - CVE-2025-1131  (fixed in 18.26.3): local privilege escalation via safe_asterisk
    - CVE-2025-54995 (fixed in 18.26.4): resource exhaustion via RTP port leak

    Also fixes F44FailsToInstall for asterisk-snmp (BZ#2433748).

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4206 advisory.

    -------------------------------------------------------------------------     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
    -------------------------------------------------------------------------

    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     Attachment:
    signature.asc     Description: This is a digitally signed message part

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-38d71393c1 advisory.

    Update to Asterisk 18.26.4, addressing numerous security vulnerabilities     accumulated since the long-stale 18.12.1 package. The following CVEs are fixed     in this update:

    - CVE-2022-26498 (fixed in 18.13.0): use-after-free in chan_ooh323
    - CVE-2022-42705 (fixed in 18.15.0): use-after-free in res_pjsip_pubsub
    - CVE-2022-37325 (fixed in 18.15.1): crash in H323 channel via malformed IE
    - CVE-2023-37457 (fixed in 18.20.0): buffer overflow in PJSIP_HEADER function
    - CVE-2023-49294 (fixed in 18.20.1): arbitrary file read via AMI GetConfig
    - CVE-2023-49786 (fixed in 18.20.1): DTLS race condition causing DoS
    - CVE-2024-35190 (fixed in 18.23.1): unauthorized SIP requests matched as endpoint
    - CVE-2024-42365 (fixed in 18.24.2): Write=originate allows code execution
    - CVE-2024-42491 (fixed in 18.25.0): crash via malformed Contact/Record-Route URI
    - CVE-2025-49832 (fixed in 18.26.3): DoS/RCE in res_stir_shaken
    - CVE-2025-47779 (fixed in 18.26.2): identity forging via malformed From header
    - CVE-2025-1131  (fixed in 18.26.3): local privilege escalation via safe_asterisk
    - CVE-2025-54995 (fixed in 18.26.4): resource exhaustion via RTP port leak

    Also fixes F44FailsToInstall for asterisk-snmp (BZ#2433748).

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Asterisk is an open-source private branch exchange (PBX). Prior to versions 18.26.2, 20.14.1, 21.9.1, and     22.4.1 of Asterisk and versions 18.9-cert14 and 20.7-cert5 of certified-asterisk, 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 can be spoofed to appear to come from     trusted entities. Even administrators who follow Security best practices and Security Considerations can     be impacted. Therefore, abuse can lead to spam and enable social engineering, phishing and similar     attacks. Versions 18.26.2, 20.14.1, 21.9.1, and 22.4.1 of Asterisk and versions 18.9-cert14 and 20.7-cert5     of certified-asterisk fix the issue. (CVE-2025-47779)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-80b21debe7 advisory.

    Update to Asterisk 18.26.4, addressing numerous security vulnerabilities     accumulated since the long-stale 18.12.1 package. The following CVEs are fixed     in this update:

    - CVE-2022-26498 (fixed in 18.13.0): use-after-free in chan_ooh323
    - CVE-2022-42705 (fixed in 18.15.0): use-after-free in res_pjsip_pubsub
    - CVE-2022-37325 (fixed in 18.15.1): crash in H323 channel via malformed IE
    - CVE-2023-37457 (fixed in 18.20.0): buffer overflow in PJSIP_HEADER function
    - CVE-2023-49294 (fixed in 18.20.1): arbitrary file read via AMI GetConfig
    - CVE-2023-49786 (fixed in 18.20.1): DTLS race condition causing DoS
    - CVE-2024-35190 (fixed in 18.23.1): unauthorized SIP requests matched as endpoint
    - CVE-2024-42365 (fixed in 18.24.2): Write=originate allows code execution
    - CVE-2024-42491 (fixed in 18.25.0): crash via malformed Contact/Record-Route URI
    - CVE-2025-49832 (fixed in 18.26.3): DoS/RCE in res_stir_shaken
    - CVE-2025-47779 (fixed in 18.26.2): identity forging via malformed From header
    - CVE-2025-1131  (fixed in 18.26.3): local privilege escalation via safe_asterisk
    - CVE-2025-54995 (fixed in 18.26.4): resource exhaustion via RTP port leak

    Also fixes F44FailsToInstall for asterisk-snmp (BZ#2433748).

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
311158	Fedora 42 : asterisk (2026-98decbde87)	Nessus	Fedora Local Security Checks	4/30/2026	4/30/2026	high
237665	Debian dla-4206 : asterisk - security update	Nessus	Debian Local Security Checks	6/2/2025	6/2/2025	medium
311100	Fedora 44 : asterisk (2026-38d71393c1)	Nessus	Fedora Local Security Checks	4/30/2026	4/30/2026	high
243592	Linux Distros Unpatched Vulnerability : CVE-2025-47779	Nessus	Misc.	8/5/2025	4/29/2026	medium
311157	Fedora 43 : asterisk (2026-80b21debe7)	Nessus	Fedora Local Security Checks	4/30/2026	4/30/2026	high

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