SB2022041409 - Denial of service in Cisco IOS XE Software AppNav-XE
Published: April 14, 2022
Security Bulletin ID
SB2022041409
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) Improper Resource Locking (CVE-ID: CVE-2022-20678)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the incorrect handling of certain TCP segments in the AppNav-XE feature. A remote attacker can send a stream of crafted TCP traffic and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.