SB2020020539 - Denial of service in Cisco FXOS, IOS XR and NX-OS
Published: February 5, 2020 Updated: December 16, 2020
Security Bulletin ID
SB2020020539
Severity
Low
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) Integer overflow (CVE-ID: CVE-2020-3120)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to integer overflow in the Cisco Discovery Protocol implementation. A remote attacker on the local network can send a specially crafted Cisco Discovery Protocol packet, trigger integer overflow and cause a denial of service condition on the target system.
Remediation
Install update from vendor's website.