SB2021032920 - Denial of service in Cisco IOS XE
Published: March 29, 2021
Security Bulletin ID
SB2021032920
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) Out-of-bounds read (CVE-ID: CVE-2021-1373)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol. A remote attacker can send a specially crafted CAPWAP packet, trigger out-of-bounds read error and cause a denial of service condition on the system.
Remediation
Install update from vendor's website.