CVE-2021-46837

res_pjsip_t38 in Sangoma Asterisk 16.x before 16.16.2, 17.x before 17.9.3, and 18.x before 18.2.2, and Certified Asterisk before 16.8-cert7, allows an attacker to trigger a crash by sending an m=image line and zero port in a response to a T.38 re-invite initiated by Asterisk. This is a re-occurrence of the CVE-2019-15297 symptoms but not for exactly the same reason. The crash occurs because there is an append operation relative to the active topology, but this should instead be a replace operation.
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:asterisk:certified_asterisk:16.8.0:-:*:*:*:*:*:*
cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert1:*:*:*:*:*:*
cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert2:*:*:*:*:*:*
cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert3:*:*:*:*:*:*
cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert4:*:*:*:*:*:*
cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert5:*:*:*:*:*:*
cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert6:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

History

21 Nov 2024, 06:34

Type Values Removed Values Added
References () https://downloads.asterisk.org/pub/security/AST-2021-006.html - Vendor Advisory () https://downloads.asterisk.org/pub/security/AST-2021-006.html - Vendor Advisory
References () https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html - Mailing List, Third Party Advisory () https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html - Mailing List, Third Party Advisory
References () https://www.debian.org/security/2022/dsa-5285 - Third Party Advisory () https://www.debian.org/security/2022/dsa-5285 - Third Party Advisory

Information

Published : 2022-08-30 07:15

Updated : 2024-11-21 06:34


NVD link : CVE-2021-46837

Mitre link : CVE-2021-46837

CVE.ORG link : CVE-2021-46837


JSON object : View

Products Affected

debian

  • debian_linux

asterisk

  • certified_asterisk

digium

  • asterisk
CWE
CWE-476

NULL Pointer Dereference