Stack-based buffer overflow in Cisco NX-OS

#VU66750 Stack-based buffer overflow in Cisco NX-OS

Published: 2022-08-24

Vulnerability identifier: #VU66750

Vulnerability risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-20824

CWE-ID: CWE-121

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Cisco NX-OS
Operating systems & Components / Operating system

Vendor: Cisco Systems, Inc

Description

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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco NX-OS: 8.2 - 9.3.7a

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

Latest bulletins with this vulnerability

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