SB2021033008 - Remote code execution in Cisco IOS XE Software
Published: March 30, 2021
Security Bulletin ID
SB2021033008
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2021-1451)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the Easy Virtual Switching System (VSS) feature. A remote attacker can send specially crafted Easy VSS protocol packets to UDP port 5500, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.