PJSIP is a free and open source multimedia communication library written in C with high level API in C, C++, Java, C#, and Python languages. SRTP is a higher level media transport which is stacked upon a lower level media transport such as UDP and ICE. Currently a higher level transport is not synchronized with its lower level transport that may introduce use-after-free issue. This vulnerability affects applications that have SRTP capability (`PJMEDIA_HAS_SRTP` is set) and use underlying media transport other than UDP. This vulnerability’s impact may range from unexpected application termination to control flow hijack/memory corruption. The patch is available as a commit in the master branch.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - PJSIP is a free and open source multimedia communication library written in C with high level API in C,
    C++, Java, C#, and Python languages. SRTP is a higher level media transport which is stacked upon a lower
    level media transport such as UDP and ICE. Currently a higher level transport is not synchronized with its
    lower level transport that may introduce use-after-free issue. This vulnerability affects applications
    that have SRTP capability (`PJMEDIA_HAS_SRTP` is set) and use underlying media transport other than UDP.
    This vulnerability’s impact may range from unexpected application termination to control flow
    hijack/memory corruption. The patch is available as a commit in the master branch. (CVE-2023-38703)

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

  - PJSIP is a free and open source multimedia communication library written in C with high level API in C,     C++, Java, C#, and Python languages. SRTP is a higher level media transport which is stacked upon a lower     level media transport such as UDP and ICE. Currently a higher level transport is not synchronized with its     lower level transport that may introduce use-after-free issue. This vulnerability affects applications     that have SRTP capability (`PJMEDIA_HAS_SRTP` is set) and use underlying media transport other than UDP.
    This vulnerability's impact may range from unexpected application termination to control flow     hijack/memory corruption. The patch is available as a commit in the master branch. (CVE-2023-38703)

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

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3696 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-3696-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                      Markus Koschany     December 28, 2023                             https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : asterisk     Version        : 1:16.28.0~dfsg-0+deb10u4     CVE ID         : CVE-2023-37457 CVE-2023-38703 CVE-2023-49294 CVE-2023-49786     Debian Bug     : 1059303 1059032 1059033

    Multiple security vulnerabilities have been discovered in Asterisk, an Open     Source Private Branch Exchange.

    CVE-2023-37457

        The 'update' functionality of the PJSIP_HEADER dialplan function can exceed         the available buffer space for storing the new value of a header. By doing         so this can overwrite memory or cause a crash. This is not externally         exploitable, unless dialplan is explicitly written to update a header based         on data from an outside source. If the 'update' functionality is not used         the vulnerability does not occur.

    CVE-2023-38703

        PJSIP is a free and open source multimedia communication library written in         C with high level API in C, C++, Java, C#, and Python languages. SRTP is a         higher level media transport which is stacked upon a lower level media         transport such as UDP and ICE. Currently a higher level transport is not         synchronized with its lower level transport that may introduce a         use-after-free issue. This vulnerability affects applications that have         SRTP capability (`PJMEDIA_HAS_SRTP` is set) and use underlying media         transport other than UDP. This vulnerabilitys impact may range from         unexpected application termination to control flow hijack/memory         corruption.

    CVE-2023-49294

        It is possible to read any arbitrary file even when the `live_dangerously`         option is not enabled.

    CVE-2023-49786

       Asterisk is susceptible to a DoS due to a race condition in the hello        handshake phase of the DTLS protocol when handling DTLS-SRTP for media        setup. This attack can be done continuously, thus denying new DTLS-SRTP        encrypted calls during the attack. Abuse of this vulnerability may lead to        a massive Denial of Service on vulnerable Asterisk servers for calls that        rely on DTLS-SRTP.

    For Debian 10 buster, these problems have been fixed in version     1:16.28.0~dfsg-0+deb10u4.

    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.

ID	Name	Product	Family	Type	Severity
424353	Alpine: multiple pjproject packages: security update to 2.14-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	critical
424353	Alpine: multiple pjproject packages: security update to 2.14-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	critical
226029	Linux Distros Unpatched Vulnerability : CVE-2023-38703	Nessus	Misc.	Local	critical
214468	Debian dla-3696 : asterisk - security update	Nessus	Debian Local Security Checks	Local	critical
408013	Alpine: pjproject: security update to 2.14-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	critical
408013	Alpine: pjproject: security update to 2.14-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	critical

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