CVE-2025-49832 — Asterisk is Vulnerable to Remote DoS and possible RCE Attacks During Memory Allocation

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
asterisk / asterisk	affected < 18.26.3; affected >= 20.00.0, < 20.15.1; affected >= 21.00.0, < 21.10.1; affected >= 22.00.0, < 22.5.1; affected >= 20.7-cert6, < 20.7-cert7

CWE

CWE-476

References

https://github.com/asterisk/asterisk/security/advisories/GHSA-mrq5-74j5-f5cr

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.