Pjsip vulnerability - CVE-2022-21722

FreePBX Security
1

Hi community,

There is this vulnerability in pjsip library: CVE-2022-21722.

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 version 2.11.1 and prior, there are various cases where it is possible that certain incoming RTP/RTCP packets can potentially cause out-of-bound read access. This issue affects all users that use PJMEDIA and accept incoming RTP/RTCP. A patch is available as a commit in the master branch. There are no known workarounds.

Any plans to fix this in an upcoming version?

Our FreePBX version: FPBX-15.0.17.67(16.17.0)

freepbx*CLI> pjsip show version
PJPROJECT version currently running against: 2.10
2

It’s not applicable to Asterisk

Also see: Commentary: security fixes in PJSIP, Zyxel, BIG-IP, Vicidial and others – Communication Breakdown - VoIP & WebRTC Security

Should not affect Asterisk since they do their own RTP/RTCP parsing.

2 Likes
3

Thanks very much for the info.

4

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