#VU80771 NULL pointer dereference in Cisco IOS XR - CVE-2023-20233 

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Main Vulnerability Database Vulnerabilities #VU80771

#VU80771 NULL pointer dereference in Cisco IOS XR - CVE-2023-20233

Published: September 14, 2023


Vulnerability identifier: #VU80771
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-20233
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Cisco IOS XR
Software vendor:
Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to incorrect processing of invalid continuity check messages (CCMs) in the Connectivity Fault Management (CFM) feature. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.


Remediation

Install updates from vendor's website.

External links