SB2020020610 - Remote code execution in Cisco NX-OS
Published: February 6, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds write (CVE-ID: CVE-2020-3119)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to the Cisco Discovery Protocol parser for Cisco NX-OS does not properly validate input for certain fields in a Cisco Discovery Protocol message. A remote attacker on the local network can send a malicious Cisco Discovery Protocol packet to an affected device, trigger out-of-bounds write and execute arbitrary code on the target system.
Remediation
Install update from vendor's website.