Improper Resource Shutdown or Release The advisory has been revoked - it doesn't affect any version of package asterisk (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UBUNTU1604-ASTERISK-1077667
- published20 Feb 2021
- disclosed18 Feb 2021
Introduced: 18 Feb 2021
CVE-2021-26906 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:16.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream asterisk package and not the asterisk package as distributed by Ubuntu.
An issue was discovered in res_pjsip_session.c in Digium Asterisk through 13.38.1; 14.x, 15.x, and 16.x through 16.16.0; 17.x through 17.9.1; and 18.x through 18.2.0, and Certified Asterisk through 16.8-cert5. An SDP negotiation vulnerability in PJSIP allows a remote server to potentially crash Asterisk by sending specific SIP responses that cause an SDP negotiation failure.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2021-26906
- https://downloads.asterisk.org/pub/security/AST-2021-005.html
- https://issues.asterisk.org/jira/browse/ASTERISK-29196
- http://seclists.org/fulldisclosure/2021/Feb/61
- http://packetstormsecurity.com/files/161477/Asterisk-Project-Security-Advisory-AST-2021-005.html
- https://downloads.asterisk.org/pub/security/