Input validation error in Cisco IOS XE - CVE-2022-20915
Published: September 29, 2022
Vulnerability identifier: #VU67727
CSH Severity: Low
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-2022-20915
CWE-ID: CWE-20
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 user-supplied input in the implementation of IPv6 VPN over MPLS (6VPE) with Zone-Based Firewall (ZBFW). A remote attacker on the local network can pass specially crafted input to the application and perform a denial of service (DoS) attack.
Affected software
Cisco IOS XE
How to mitigate CVE-2022-20915
Install updates from vendor's website.
Cisco IOS XE - addressed in versions 16.12.8, 17.3.6, 17.6.1z, 17.6.3, 17.6.3a, 17.6.4, 17.7.2, 17.8.1, 17.8.1a, 17.9.1, 17.9.1a