Buffer overflow in Cisco IOS XR - CVE-2022-20846
Published: September 15, 2022
Vulnerability identifier: #VU67372
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-20846
CWE-ID: CWE-120
Exploitation vector: Adjecent network
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 insufficient validation of certain Cisco Discovery Protocol messages. A remote non-authenticated attacker on the local network can send specially crafted Cisco Discovery Protocol packets to the affected device and perform a denial of service (DoS) attack.
Affected software
Cisco IOS XR
How to mitigate CVE-2022-20846
Install updates from vendor's website.
Cisco IOS XR - addressed in versions 7.5.2, 7.6.2, 7.7.1