CVE-2024-20309

A vulnerability in auxiliary asynchronous port (AUX) functions of Cisco IOS XE Software could allow an authenticated, local attacker to cause an affected device to reload or stop responding. This vulnerability is due to the incorrect handling of specific ingress traffic when flow control hardware is enabled on the AUX port. An attacker could exploit this vulnerability by reverse telnetting to the AUX port and sending specific data after connecting. A successful exploit could allow the attacker to cause the device to reset or stop responding, resulting in a denial of service (DoS) condition.

Score

CVSS 3.1 5.6 Medium

Status

Analyzed - psirt@cisco.com

Published

2024-03-27

Last modified

2024-08-09

Weaknesses

CWE-828

Affected products

• Cisco Ios Xe Software (Cisco)
• Ios Xe (Cisco)

References

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aux-333WBz8f