CVE-2021-32558

high
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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.

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

Details

Source: MITRE

Published: 2021-07-30

Updated: 2021-08-06

Type: CWE-74

Risk Information

CVSS v2

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

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

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH

Tenable Plugins

View all (2 total)

IDNameProductFamilySeverity
152215Debian DLA-2729-1 : asterisk - LTS security updateNessusDebian Local Security Checks
high
152070FreeBSD : asterisk -- Remote crash when using IAX2 channel driver (fb3455be-ebf6-11eb-aef1-0897988a1c07)NessusFreeBSD Local Security Checks
high