Denial of service in Cisco NX-OS Software

1) Buffer overflow

EUVDB-ID: #VU86912

Risk: High

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-20267

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the handling of MPLS traffic. A remote attacker can trigger memory corruption and cause a denial of service on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco NX-OS: 6.0(2)A3(1) - 10.4(1)

Cisco Nexus 3000 Series Switches: All versions

Nexus 5500 Platform Switches: All versions

Nexus 5600 Platform Switches: All versions

Nexus 6000 Series Switches: All versions

Nexus 7000 Series Switches: All versions

Cisco Nexus 9000 Series Switches NX-OS Mode: All versions

External links

http://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipv6-mpls-dos-R9ycXkwM

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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