vulnerability
Ubuntu: USN-8122-1 (CVE-2021-21375): PJSIP vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:N/C:N/I:N/A:P) | Mar 24, 2026 | Mar 27, 2026 | Mar 27, 2026 |
Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:P)
Published
Mar 24, 2026
Added
Mar 27, 2026
Modified
Mar 27, 2026
Description
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.
Solutions
ubuntu-pro-upgrade-libpj2ubuntu-pro-upgrade-libpjmedia2ubuntu-pro-upgrade-libpjnath2ubuntu-pro-upgrade-libpjsip2ubuntu-pro-upgrade-libpjsua2ubuntu-pro-upgrade-python-pjproject
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.