CVE-2021-32558

Public Exploit

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.21% Top 25%
Vendor Advisory debian.org Vendor Advisory asterisk.org Vendor Advisory asterisk.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://seclists.org/fulldisclosure/2021/Jul/49 mailing list third party advisory patch
http://packetstormsecurity.com/files/163639/Asterisk-Project-Security-Advisory-AST-2021-008.html vdb entry third party advisory patch
https://downloads.asterisk.org/pub/security/AST-2021-008.html patch vendor advisory
https://issues.asterisk.org/jira/browse/ASTERISK-29392 issue tracking patch vendor advisory exploit
https://lists.debian.org/debian-lts-announce/2021/08/msg00005.html third party advisory mailing list
https://www.debian.org/security/2021/dsa-4999 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-32558?
CVE-2021-32558 has been scored as a high severity vulnerability.
How to fix CVE-2021-32558?
To fix CVE-2021-32558, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-32558 being actively exploited in the wild?
It is possible that CVE-2021-32558 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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