CVE-2022-39269 Media transport downgrade from the secure version (SRTP) to non-secure (RTP) in pjsip
Attackers can force PJSIP to downgrade secure SRTP media to insecure RTP, exposing communication content to eavesdropping.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-39269?
CVE-2022-39269 is a critical vulnerability in pjsip pjproject, published on 6 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
PJSIP is a free and open source multimedia communication library written in C. When processing certain packets, PJSIP may incorrectly switch from using SRTP media transport to using basic RTP upon SRTP restart, causing the media to be sent insecurely. The vulnerability impacts all PJSIP users that use SRTP. The patch is available as commit d2acb9a in the master branch of the project and will be included in version 2.13. Users are advised to manually patch or to upgrade. There are no known workarounds for this vulnerability.
Weakness: CWE-319
Which versions are affected by CVE-2022-39269?
It affects 1 product.
Products include Teluu Pjsip.
How do I fix CVE-2022-39269?
Upgrade to a fixed version.
Is CVE-2022-39269 being exploited?
There is no known exploitation of CVE-2022-39269 in the wild and no public exploit code.
Other vulnerabilities in pjsip pjproject
- CVE-2023-38703 PJSIP has use-after-free vulnerability in SRTP media transport
- CVE-2026-57161 PJSIP: Stack overflow handling Service-Route headers in a registration response
- CVE-2026-57162 PJSIP: Stack overflow parsing SDP a=crypto attributes
- CVE-2026-57163 PJSIP: Stack overflow parsing a TLS peer certificate's SubjectAltName in GnuTLS backend
- CVE-2026-57159 PJSIP: SDP parser out-of-bounds write in remote payload-type map maintenance
Sources
Also known as ALPINE-CVE-2022-39269, DEBIAN-CVE-2022-39269, GHSA-wx5m-cj97-4wwg, UBUNTU-CVE-2022-39269.