SB2023032344 - Denial of service in Cisco IOS XE Software
Published: March 23, 2023
Security Bulletin ID
SB2023032344
Severity
High
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) Input validation error (CVE-ID: CVE-2023-20027)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper reassembly of large packets in the implementation of the IPv4 Virtual Fragmentation Reassembly (VFR) feature. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.