SB2022082441 - Remote code execution in Cisco FXOS and NX-OS Software Cisco Discovery protocol
Published: August 24, 2022
Security Bulletin ID
SB2022082441
Severity
Medium
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) Stack-based buffer overflow (CVE-ID: CVE-2022-20824)
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
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-cdp-dos-ce-wWvPucC9
- https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwb70210
- https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwb74493
- https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwb74494
- https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwb74495
- https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwb74496
- https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwb74497
- https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwb74498
- https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwb74513