QID 317064

Date Published: 2021-09-28

QID 317064: Cisco Nexus Operating System (NX-OS) Unidirectional Link Detection Denial of Service (DoS) Vulnerability (cisco-sa-ios-nxos-xr-udld-dos-W5hGHgtQ)

A vulnerability in the Unidirectional Link Detection (UDLD) feature of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause an affected device to reload.

Affected Products
Cisco devices if they were running a vulnerable release of the following Cisco software and had the UDLD feature enabled: MDS 9000 Series Multilayer Switches Nexus 3000 Series Switches
Nexus 5500 Platform Switches
Nexus 5600 Platform Switches
Nexus 6000 Series Switches
Nexus 7000 Series Switches
Nexus 9000 Series Switches in standalone NX-OS mode

QID Detection Logic(Authenticated):
It checks for vulnerable version of Cisco NX-OS using show version Command.

A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.

CVSS V2 rated as High - 7.5 severity.

Solution

Customers are advised to refer to cisco-sa-ios-nxos-xr-udld-dos-W5hGHgtQ for more information.

Vendor References

cisco-sa-ios-nxos-xr-udld-dos-W5hGHgtQ - tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-nxos-xr-udld-dos-W5hGHgtQ

CVEs related to QID 317064

CVE-2021-34714 |

Software Advisories

Advisory ID	Software	Component	Link
cisco-sa-ios-nxos-xr-udld-dos-W5hGHgtQ			tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-nxos-xr-udld-dos-W5hGHgtQ

By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].