Integer overflow in Snort - CVE-2022-20685

 

Integer overflow in Snort - CVE-2022-20685

Published: January 24, 2022


Vulnerability identifier: #VU59963
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-2022-20685
CWE-ID: CWE-190
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 integer overflow in the Modbus preprocessor. A remote attacker can send specially crafted traffic through an affected system, trigger integer overflow and perform a denial of service (DoS) attack.


Affected software

Snort
Meraki MX
Cisco Cyber Vision Center
Cisco UTD Snort IPS Engine Software for IOS XE

How to mitigate CVE-2022-20685

Install updates from vendor's website.

Snort - addressed in versions 2.9.19, 3.1.11.0
Cisco Cyber Vision Center - update to 4.0.2
Cisco UTD Snort IPS Engine Software for IOS XE - addressed in versions 16.12.7, 17.3.5, 17.6.2

External References

Related Security Bulletins