QwikSec

Security Database

CVE

CWE

Training

CVE-2021-26717

Published: Feb 18, 2021

Modified: Aug 3, 2024

PUBLISHED

Description

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.

Vendor	Product	Versions
n/a	n/a	affected `n/a`

References

https://downloads.asterisk.org/pub/security/

x_refsource_MISC

20210218 AST-2021-002: Remote crash possible when negotiating T.38

mailing-list

x_refsource_FULLDISC

https://downloads.asterisk.org/pub/security/AST-2021-002.html

x_refsource_CONFIRM

https://issues.asterisk.org/jira/browse/ASTERISK-29203

x_refsource_CONFIRM

http://packetstormsecurity.com/files/161471/Asterisk-Project-Security-Advisory-AST-2021-002.html

x_refsource_MISC

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.