Vulnerability CVE-2021-32558
Published: 2021-07-30

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.

Type:

CWE-74

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Digium -> Asterisk 
Digium -> Certified asterisk 
Debian -> Debian linux 

 References:
http://packetstormsecurity.com/files/163639/Asterisk-Project-Security-Advisory-AST-2021-008.html
http://seclists.org/fulldisclosure/2021/Jul/49
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
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