SB2020020609 - Remote code execution in Cisco IP Phones

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Main Vulnerability Database SB2020020609

SB2020020609 - Remote code execution in Cisco IP Phones

Published: February 6, 2020 Updated: February 6, 2020

Security Bulletin ID SB2020020609
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Adjecent network
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Input validation error (CVE-ID: CVE-2020-3111)

CWE-ID: CWE-20 - Improper input validation

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 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.

References