DEBIAN-CVE-2021-46837
Dashboard / Vulnerabilities / DEBIAN-CVE-2021-46837
Summary:
Details: 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.
Affected packages
Package
Name: asterisk
Purl: pkg:deb/debian/asterisk?arch=source&distro=forky
Affected ranges
Type: ECOSYSTEM
Events:
Introduced- 0
Fixed -1:18.9.0~dfsg+~cs6.10.40431411-1
Affected versions
0.1.11-3
0.1.11-3woody1
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
