Resource exhaustion in Asterisk Open Source - CVE-2022-26498
Published: April 15, 2022
Vulnerability identifier: #VU62355
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-26498
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources ub res_stir_shaken module. A remote attacker can force the application to download large files that are not certificates, which can result in a denial of service condition.
Affected software
Asterisk Open Source
Debian Linux
asterisk (Debian package)
Debian Linux
asterisk (Debian package)
How to mitigate CVE-2022-26498
Install updates from vendor's website.
Asterisk Open Source - addressed in versions 16.25.2, 18.11.2, 19.3.2
asterisk (Debian package) - update to 1:16.28.0~dfsg-0+deb11u1
asterisk (Debian package) - update to 1:16.28.0~dfsg-0+deb11u1