Cross-site request forgery in Cisco NX-OS Software NX-API

1) Cross-site request forgery

EUVDB-ID: #VU50944

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1227

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin in the NX-API feature. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Cisco MDS 9000 Series Multilayer Switches: before 7.0.3 I7.9

Cisco Nexus 3000 Series Switches: before 7.0.3 I7.9

Nexus 5500 Platform Switches: before 7.3.8 N1.1

Nexus 5600 Platform Switches: before 7.3.8 N1.1

Nexus 6000 Series Switches: before 7.3.8 N1.1

Nexus 7000 Series Switches: before 8.2.5

Cisco Nexus 9000 Series Switches NX-OS Mode: before 7.0.3 I7.9

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-nxapi-csrf-wRMzWL9z
http://bst.cloudapps.cisco.com/bugsearch/bug/CSCvr82908
http://bst.cloudapps.cisco.com/bugsearch/bug/CSCvu67365
http://bst.cloudapps.cisco.com/bugsearch/bug/CSCvv92342

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.