SB2023092819 - Denial of service in Cisco IOS XE software Layer 2 tunneling protocol
Published: September 28, 2023
Security Bulletin ID
SB2023092819
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Error Handling (CVE-ID: CVE-2023-20227)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper error handling in the Layer 2 Tunneling Protocol (L2TP) feature. A remote attacker can send specially crafted L2TP packets to the device and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.