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Rewterz Threat Advisory – CVE-2020-3119 – Cisco NX-OS Software Cisco Discovery Protocol Remote Code Execution Vulnerability

February 6, 2020
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Rewterz Threat Advisory – CVE-2020-3118 – Cisco IOS XR Software Cisco Discovery Protocol Format String Vulnerability

Severity

High

Analysis Summary

The vulnerability is due to improper validation of string input from certain fields in Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to cause a stack overflow, which could allow the attacker to execute arbitrary code with administrative privileges on an affected device.

Impact

  • Privilege escalation
  • Arbitrary code execution

Affected Vendors

Cisco

Remediation

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-iosxr-cdp-rce

Please refer to vendor’s advisory for the list of affected products and patches.

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