SB2022082441 - Remote code execution in Cisco FXOS and NX-OS Software Cisco Discovery protocol

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Main Vulnerability Database SB2022082441

SB2022082441 - Remote code execution in Cisco FXOS and NX-OS Software Cisco Discovery protocol

Published: August 24, 2022

Security Bulletin ID SB2022082441
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Adjecent network
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Stack-based buffer overflow (CVE-ID: CVE-2022-20824)

CWE-ID: CWE-121 - Stack-based buffer overflow

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:Green


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the Cisco Discovery Protocol feature. A remote unauthenticated attacker can send a malicious Cisco Discovery Protocol packet to an affected device, trigger a stack-based buffer overflow and execute arbitrary code on the target system with root privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable device.


Remediation

Install update from vendor's website.

References