Crash in receiving updated SDP answer after initial SDP negotiation failed
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 2.1%
exploitation probability
2.1%top 20% of all CVEs
observed exploitation
nono source reports it
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:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected products
pjsip · pjprojectReferences
https://github.com/pjsip/pjproject/commit/97b3d7addbaa720b7ddb0af9bf6f3e443e664365https://github.com/pjsip/pjproject/security/advisories/GHSA-hvq6-f89p-frvphttps://lists.debian.org/debian-lts-announce/2021/04/msg00023.htmlhttps://lists.debian.org/debian-lts-announce/2021/05/msg00020.htmlhttps://security.gentoo.org/glsa/202107-42