Asterisk is Vulnerable to Remote DoS and possible RCE Attacks During Memory Allocation
Summary
Asterisk is Vulnerable to Remote DoS and possible RCE Attacks During Memory Allocation
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2025-49832 asterisk Fixed in: 1:22.5.1~dfsg+~cs6.15.60671435-1
- Ubuntu UBUNTU-CVE-2025-49832 asterisk
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov