SB2024032814 - Denial of service in Cisco IOS XE Software
Published: March 28, 2024
Security Bulletin ID
SB2024032814
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2024-20309)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 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
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.
Remediation
Install update from vendor's website.