CVE-2021-41141 Missing release of locks in PJSIP

2022-01-0400:00:00

CWE-667

GitHub_M

www.cve.org

cve-2021-41141

pjsip

lock release

vulnerability

denial of service

sip

sdp

rtp

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

8.6

Confidence

High

EPSS

0.004

Percentile

73.1%

JSON

PJSIP is a free and open source multimedia communication library written in the C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In various parts of PJSIP, when error/failure occurs, it is found that the function returns without releasing the currently held locks. This could result in a system deadlock, which cause a denial of service for the users. No release has yet been made which contains the linked fix commit. All versions up to an including 2.11.1 are affected. Users may need to manually apply the patch.

CNA Affected

[
  {
    "vendor": "pjsip",
    "product": "pjproject",
    "versions": [
      {
        "version": "<= 2.11.1",
        "status": "affected"
      }
    ]
  }
]