Arbitrary Code Injection The advisory has been revoked - it doesn't affect any version of package asterisk (opens in a new tab)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-DEBIAN13-ASTERISK-6024137
- published29 Jul 2021
- disclosed30 Jul 2021
Introduced: 29 Jul 2021
CVE-2021-32558 (opens in a new tab)Amendment
The Debian security team deemed this advisory irrelevant for Debian:13.
NVD Description
Note: Versions mentioned in the description apply only to the upstream asterisk package and not the asterisk package as distributed by Debian.
An issue was discovered in Sangoma Asterisk 13.x before 13.38.3, 16.x before 16.19.1, 17.x before 17.9.4, and 18.x before 18.5.1, and Certified Asterisk before 16.8-cert10. If the IAX2 channel driver receives a packet that contains an unsupported media format, a crash can occur.
References
- https://security-tracker.debian.org/tracker/CVE-2021-32558
- http://seclists.org/fulldisclosure/2021/Jul/49
- http://packetstormsecurity.com/files/163639/Asterisk-Project-Security-Advisory-AST-2021-008.html
- https://downloads.asterisk.org/pub/security/AST-2021-008.html
- https://issues.asterisk.org/jira/browse/ASTERISK-29392
- https://lists.debian.org/debian-lts-announce/2021/08/msg00005.html
- https://www.debian.org/security/2021/dsa-4999