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CVE-2021-32686 Detail

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.


Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score matches with CNA score
CNA:  GitHub, Inc.
Base Score:  5.9 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: The NVD and the CNA have provided the same score. When this occurs only the CNA information is displayed, but the Acceptance Level icon for the CNA is given a checkmark to signify NVD concurrence.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/pjsip/pjproject/commit/d5f95aa066f878b0aef6a64e60b61e8626e664cd Patch  Third Party Advisory 
https://github.com/pjsip/pjproject/pull/2716 Patch  Third Party Advisory 
https://github.com/pjsip/pjproject/releases/tag/2.11.1 Release Notes  Third Party Advisory 
https://github.com/pjsip/pjproject/security/advisories/GHSA-cv8x-p47p-99wr Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html Mailing List  Third Party Advisory 
https://security.gentoo.org/glsa/202210-37 Third Party Advisory 
https://www.debian.org/security/2021/dsa-4999 Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') cwe source acceptance level NIST   Contributor acceptance level GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

9 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-32686
NVD Published Date:
07/23/2021
NVD Last Modified:
11/16/2022
Source:
GitHub, Inc.