CVE-2021-26712 The advisory has been revoked - it doesn't affect any version of package asterisk (opens in a new tab)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.
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Test your applications- Snyk IDSNYK-UBUNTU2504-ASTERISK-9822453
- published26 Apr 2025
- disclosed18 Feb 2021
Introduced: 18 Feb 2021
CVE-2021-26712 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:25.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream asterisk package and not the asterisk package as distributed by Ubuntu.
Incorrect access controls in res_srtp.c in Sangoma Asterisk 13.38.1, 16.16.0, 17.9.1, and 18.2.0 and Certified Asterisk 16.8-cert5 allow a remote unauthenticated attacker to prematurely terminate secure calls by replaying SRTP packets.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2021-26712
- https://downloads.asterisk.org/pub/security/AST-2021-003.html
- https://issues.asterisk.org/jira/browse/ASTERISK-29260
- http://seclists.org/fulldisclosure/2021/Feb/59
- http://packetstormsecurity.com/files/161473/Asterisk-Project-Security-Advisory-AST-2021-003.html
- https://downloads.asterisk.org/pub/security/