Input validation error in Cisco IOS XE - CVE-2024-20309
Published: March 28, 2024
Vulnerability identifier: #VU87894
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2024-20309
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco IOS XE
Cisco IOS XE
Detailed vulnerability description
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.
How to mitigate CVE-2024-20309
Install updates from vendor's website.