Description
Asterisk is an open source private branch exchange and telephony toolkit. In versions up to and including 18.26.2, between 20.00.0 and 20.15.0, 20.7-cert6, 21.00.0, 22.00.0 through 22.5.0, there is a remote DoS and possible RCE condition in `asterisk/res/res_stir_shaken /verification.c` that can be exploited when an attacker can set an arbitrary Identity header, or STIR/SHAKEN is enabled, with verification set in the SIP profile associated with the endpoint to be attacked. This is fixed in versions 18.26.3, 20.7-cert6, 20.15.1, 21.10.1 and 22.5.1.
Problem types
CWE-476: NULL Pointer Dereference
Product status
>= 20.00.0, < 20.15.1
>= 21.00.0, < 21.10.1
>= 22.00.0, < 22.5.1
>= 20.7-cert6, < 20.7-cert7
References
github.com/...terisk/security/advisories/GHSA-mrq5-74j5-f5cr