CVE-2021-32558 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

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 https://www.debian.org/security/2021/dsa-4999

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5