SB2020020609 - Remote code execution in Cisco IP Phones
Published: February 6, 2020 Updated: February 6, 2020
Security Bulletin ID
SB2020020609
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2020-3111)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to missing checks when processing Cisco Discovery Protocol messages. A remote attacker on the local network can send a specially crafted Cisco Discovery Protocol packet to the targeted IP phone and execute arbitrary code with root privileges or cause a reload of an affected IP phone, resulting in a denial of service (DoS) condition.
Remediation
Install update from vendor's website.