Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!Close

CVE-2021-43804

Published: 22 December 2021

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 affected versions if the incoming RTCP BYE message contains a reason's length, this declared length is not checked against the actual received packet size, potentially resulting in an out-of-bound read access. This issue affects all users that use PJMEDIA and RTCP. A malicious actor can send a RTCP BYE message with an invalid reason length. Users are advised to upgrade as soon as possible. There are no known workarounds.

Priority

Medium

Cvss 3 Severity Score

7.3

Score breakdown

Status

Package Release Status
pjproject
Launchpad, Ubuntu, Debian
bionic Needs triage

trusty Ignored
(end of standard support)
upstream Needs triage

xenial Needs triage

ring
Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
xenial Ignored
(end of standard support)
impish Ignored
(end of life)
lunar Not vulnerable
(20230206.0~ds1-5)
upstream Needs triage

bionic
Released (20180228.1.503da2b~ds1-1ubuntu0.1~esm1)
Available with Ubuntu Pro
focal
Released (20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1)
mantic Not vulnerable
(20230206.0~ds2-1.3)

Severity score breakdown

Parameter Value
Base score 7.3
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact Low
Availability impact Low
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L