asterisk: 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 Aste...
CVE-2021-46837 is fixed in asterisk on 1 platform by DEBIAN-CVE-2021-46837 (version 1:18.9.0~dfsg+~cs6.10.40431411-1), released August 30, 2022. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| asterisk · Debian 14 | 1:18.9.0~dfsg+~cs6.10.40431411-1 | DEBIAN-CVE-2021-46837 | Aug 30, 2022 |
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