CVE-2021-32686
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 before version 2.11.1, there are a couple of issues found in the SSL socket. First, a race condition between callback and destroy, due to the accepted socket having no group lock. Second, the SSL socket parent/listener may get destroyed during handshake. Both issues were reported to happen intermittently in heavy load TLS connections. They cause a crash, resulting in a denial of service. These are fixed in version 2.11.1.
How to fix
- teluu pjsip2.11.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| teluu pjsip | v < 2.11.1 | 2.11.1 |
| debian debian_linux | 9.0, 11.0 | — |
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