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CVE-2017-12351

5.7 · MEDIUM

A vulnerability in the guest shell feature of Cisco NX-OS System Software could allow an authenticated, local attacker to read and send packets outside the scope of the guest shell container.

Published Nov 30, 2017CWE-264EPSS 0.34%

Overview

CVE-2017-12351 is a medium-severity vulnerability. It was published on November 30, 2017 and has a CVSS 3.0 base score of 5.7 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A vulnerability in the guest shell feature of Cisco NX-OS System Software could allow an authenticated, local attacker to read and send packets outside the scope of the guest shell container. An attacker would need valid administrator credentials to perform this attack. The vulnerability is due to insufficient internal security measures in the guest shell feature. An attacker could exploit this vulnerability by sending or receiving packets on the device-internal network outside of the guest shell container, aka "Unauthorized Internal Interface Access." This vulnerability affects the following products running Cisco NX-OS System Software: Nexus 3000 Series Switches, Nexus 9000 Series Switches in standalone NX-OS mode, Nexus 9500 R-Series Line Cards and Fabric Modules. Cisco Bug IDs: CSCvf33038.

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/102019Refwww.securitytracker.com/id/1039932Reftools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxos10Refwww.securityfocus.com/bid/102019Refwww.securitytracker.com/id/1039932Reftools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxos10

How CyberStrike helps

Frequently asked questions

What is CVE-2017-12351?

CVE-2017-12351 is a medium-severity vulnerability. It was published on November 30, 2017 and has a CVSS 3.0 base score of 5.7 (MEDIUM).

How severe is CVE-2017-12351?

This vulnerability has a CVSS 3.0 base score of 5.7, 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-2017-12351?

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-2017-12351?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-12351 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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