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CVE-2021-21375

CVE-2021-21375 · Crash in receiving updated SDP answer after initial SDP negotiation failed

This page contains facts from public vulnerability sources. Check the original advisory before updating.

PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In PJSIP version 2.10 and earlier, after an initial INVITE has been sent, when two 183 responses are received, with the first one causing negotiation failure, a crash will occur. This results in a denial of service.

CVSS 6.5 · Medium · EPSS 2.1% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • pjproject

    Versions
    • <= 2.10: Affected

    No fix published

  • ring Debian:12

    Affected ranges
    • ECOSYSTEM: < 20210112.2.b757bac~ds1-1

    Update to 20210112.2.b757bac~ds1-1

  • pjproject Ubuntu:Pro:16.04:LTS

    Versions
    • 2.1.0.0.ast20130823-1
    • 2.1.0.0.ast20130823-1+deb8u1build0.16.04.1
    Affected ranges
    • ECOSYSTEM: < 2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1

    Update to 2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1

  • pjproject Ubuntu:Pro:18.04:LTS

    Versions
    • 2.6~dfsg-2
    • 2.7~dfsg-1
    • 2.7.1~dfsg-1
    • 2.7.1~dfsg-1build1
    • 2.7.2~dfsg-1
    Affected ranges
    • ECOSYSTEM: < 2.7.2~dfsg-1ubuntu0.1~esm1

    Update to 2.7.2~dfsg-1ubuntu0.1~esm1

Original sources

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