Input validation error in Cisco IOS XE - CVE-2024-20309
Published: March 28, 2024
Vulnerability identifier: #VU87894
CSH Severity: Low
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-20309
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to the incorrect handling of specific ingress traffic when flow control hardware is enabled on the AUX port. A local user can reverse telnet to the AUX port and send specific data after connecting to cause a denial of service condition on the target system.
Affected software
Cisco IOS XE
How to mitigate CVE-2024-20309
Install updates from vendor's website.
Cisco IOS XE - addressed in versions 17.9.5, 17.9.5a, 17.12.1x, 17.12.3, 17.13.1, 17.13.1a