UBUNTU-CVE-2021-32686

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UBUNTU-CVE-2021-32686

Summary:

Details: 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.

References: https://ubuntu.com/security/CVE-2021-32686, https://github.com/pjsip/pjproject/security/advisories/GHSA-cv8x-p47p-99wr, https://github.com/pjsip/pjproject/commit/d5f95aa066f878b0aef6a64e60b61e8626e664cd, https://github.com/pjsip/pjproject/pull/2716, https://github.com/pjsip/pjproject/releases/tag/2.11.1, https://www.cve.org/CVERecord?id=CVE-2021-32686, https://ubuntu.com/security/notices/USN-8122-1