Input validation error in Cisco IOS XE - CVE-2023-20072
Published: March 23, 2023
Vulnerability identifier: #VU73991
CSH Severity: High
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-2023-20072
CWE-ID: CWE-20
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 insufficient validation of user-supplied input in the fragmentation handling code of tunnel protocol packets. A remote attacker 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-2023-20072
Install updates from vendor's website.
Cisco IOS XE - addressed in versions 17.9.1x, 17.9.1x1, 17.9.2, 17.9.2a, 17.9.3, 17.10.1, 17.10.1a, 17.10.1b