SB2020092503 - Denial of service in PROFINET LLDP in Cisco IOS and IOS XE
Published: September 25, 2020
Security Bulletin ID
SB2020092503
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
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-2020-3512)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of LLDP messages in the PROFINET LLDP message handler in Cisco IOS and IOS XE. A remote attacker on the local network can send a malicious LLDP message to an affected device and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.