This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2021-26717 →
DEBIAN-CVE-2021-26717
An issue was discovered in Sangoma Asterisk 16.x before 16.16.1, 17.x before 17.9.2, and 18.x before 18.2.1 and Certified Asterisk before 16.8-cert6....
Original description
The description as published by the source.
An issue was discovered in Sangoma Asterisk 16.x before 16.16.1, 17.x before 17.9.2, and 18.x before 18.2.1 and Certified Asterisk before 16.8-cert6. When re-negotiating for T.38, if the initial remote response was delayed just enough, Asterisk would send both audio and T.38 in the SDP. If this happened, and the remote responded with a declined T.38 stream, then Asterisk would crash.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:14
asterisk
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:16.16.1~dfsg-1"}]}]
References
- advisory security-tracker.debian.org