#VU69829 Integer underflow in Asterisk Open Source and Certified Asterisk - CVE-2022-37325
Published: December 2, 2022
Vulnerability identifier: #VU69829
Vulnerability risk: Medium
CVSSv4.0: 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/E:U/U:Green
CVE-ID: CVE-2022-37325
CWE-ID: CWE-191
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Asterisk Open Source
Certified Asterisk
Asterisk Open Source
Certified Asterisk
Software vendor:
Digium (Linux Support Services)
Digium (Linux Support Services)
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an integer underflow within the ooh323 module. A remote non-authenticated attacker can initiate a call with a zero length called or calling party number, trigger an integer underflow and crash Asterisk.
Remediation
Install updates from vendor's website.