CVE-2021-32686
First, a race condition between callback and destroy, due to the accepted socket having no group lock.
Does this matter?
Lower severity and a low EPSS score (2.07%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.07% probability · 80th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-362
- Affected
- teluu/pjsip · debian/debian linux
- Source
- security-advisories@github.com
References
- https://github.com/pjsip/pjproject/commit/d5f95aa066f878b0aef6a64e60b61e8626e664cdPatch, Third Party Advisory
- https://github.com/pjsip/pjproject/pull/2716Patch, Third Party Advisory
- https://github.com/pjsip/pjproject/releases/tag/2.11.1Release Notes, Third Party Advisory
- https://github.com/pjsip/pjproject/security/advisories/GHSA-cv8x-p47p-99wrThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00035.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202210-37Third Party Advisory
- https://www.debian.org/security/2021/dsa-4999Third Party Advisory
- https://github.com/pjsip/pjproject/commit/d5f95aa066f878b0aef6a64e60b61e8626e664cdPatch, Third Party Advisory
- https://github.com/pjsip/pjproject/pull/2716Patch, Third Party Advisory
- https://github.com/pjsip/pjproject/releases/tag/2.11.1Release Notes, Third Party Advisory
- https://github.com/pjsip/pjproject/security/advisories/GHSA-cv8x-p47p-99wrThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00035.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/09/msg00030.html
- https://security.gentoo.org/glsa/202210-37Third Party Advisory
- https://www.debian.org/security/2021/dsa-4999Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.