Friday, February 19, 2021

CVE-2021-26713

Description

A stack-based buffer overflow in res_rtp_asterisk.c in Sangoma Asterisk before 16.16.1, 17.x before 17.9.2, and 18.x before 18.2.1 and Certified Asterisk before 16.8-cert6 allows an authenticated WebRTC client to cause an Asterisk crash by sending multiple hold/unhold requests in quick succession. This is caused by a signedness comparison mismatch.

References to Advisories, Solutions, and Tools


References to Advisories, Solutions, and Tools

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Resourcehttps://downloads.asterisk.org/pub/security/https://downloads.asterisk.org/pub/security/AST-2021-004.htmlhttps://issues.asterisk.org/jira/browse/ASTERISK-29205
 

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Thanks for everything Templateism - You should have written the code a little more complicated