Stack-based buffer overflow in Cisco NX-OS - CVE-2022-20824
Published: August 24, 2022
Vulnerability identifier: #VU66750
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2022-20824
CWE-ID: CWE-121
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Cisco NX-OS
How to mitigate CVE-2022-20824
Install updates from vendor's website.
Cisco NX-OS - addressed in versions 8.2.8, 9.3.9
External 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