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CVE-2017-12331

6.7 · MEDIUM

A vulnerability in Cisco NX-OS System Software could allow an authenticated, local attacker to bypass signature verification when loading a software patch.

Published Nov 30, 2017CWE-347EPSS 0.23%

Overview

CVE-2017-12331 is a medium-severity vulnerability. It was published on November 30, 2017 and has a CVSS 3.0 base score of 6.7 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 6.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A vulnerability in Cisco NX-OS System Software could allow an authenticated, local attacker to bypass signature verification when loading a software patch. The vulnerability is due to insufficient NX-OS signature verification for software patches. An authenticated, local attacker could exploit this vulnerability to bypass signature verification and load a crafted, unsigned software patch on a targeted device. The attacker would need valid administrator credentials to perform this exploit. This vulnerability affects the following products running Cisco NX-OS System Software: Multilayer Director Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Unified Computing System Manager. Cisco Bug IDs: CSCvf16494, CSCvf23655.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.securityfocus.com/bid/102159Refwww.securitytracker.com/id/1039930Reftools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxosRefwww.securityfocus.com/bid/102159Refwww.securitytracker.com/id/1039930Reftools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxos

How CyberStrike helps

Frequently asked questions

What is CVE-2017-12331?

CVE-2017-12331 is a medium-severity vulnerability. It was published on November 30, 2017 and has a CVSS 3.0 base score of 6.7 (MEDIUM).

How severe is CVE-2017-12331?

This vulnerability has a CVSS 3.0 base score of 6.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2017-12331?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-12331?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-12331 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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