CVE-2017-12339: Command Injection
First published: Thu Nov 30 2017(Updated: )
A vulnerability in the CLI of Cisco NX-OS System Software could allow an authenticated, local attacker to perform a command injection attack. The vulnerability is due to insufficient input validation of command arguments to the CLI parser. An attacker could exploit this vulnerability by injecting crafted command arguments into a vulnerable CLI command. An exploit could allow the attacker to execute arbitrary commands at the user's privilege level. On products that support multiple virtual device contexts (VDCs), this vulnerability could allow the attacker to execute commands at the user's privilege level outside the user's environment. This vulnerability affects the following products running Cisco NX-OS System Software: Multilayer Director Switches, Nexus 2000 Series Fabric Extenders, Nexus 3000 Series Switches, Nexus 5000 Series Switches, Nexus 5500 Platform Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode, Nexus 9000 Series Switches in standalone NX-OS mode, and Nexus 9500 R-Series Line Cards and Fabric Modules. Cisco Bug IDs: CSCve99925, CSCvf15164, CSCvf15167, CSCvf15170, CSCvf15173.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Nx-os | =7.0\(0\)hsk\(0.357\) | |
| Cisco Nx-os | =8.0\(1\) | |
| Cisco Nx-os | =8.1\(0\)bd\(0.20\) | |
| Cisco Lan Switch Software | =12.2\(1.107\) |
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Reference Links
Frequently Asked Questions
What is CVE-2017-12339?
CVE-2017-12339 is a vulnerability in the Cisco NX-OS System Software that allows an authenticated local attacker to perform a command injection attack.
How does CVE-2017-12339 affect Cisco NX-OS System Software?
CVE-2017-12339 affects Cisco NX-OS System Software versions 7.0(0)hsk(0.357), 8.0(1), and 8.1(0)bd(0.20).
What is the severity of CVE-2017-12339?
CVE-2017-12339 has a severity value of 5.7, which is considered medium.
How can CVE-2017-12339 be exploited?
CVE-2017-12339 can be exploited by injecting crafted command arguments to the CLI parser.
How can I fix CVE-2017-12339?
To fix CVE-2017-12339, Cisco has provided security updates. It is recommended to update to a fixed version as mentioned in the Cisco Security Advisory.
- collector/nvd-index
- agent/weakness
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/references
- agent/last-modified-date
- agent/first-publish-date
- agent/description
- agent/event
- agent/author
- agent/tags
- agent/trending
- vendor/cisco
- canonical/cisco nx-os
- version/cisco nx-os/7.0\(0\)hsk\(0.357\)
- version/cisco nx-os/8.0\(1\)
- version/cisco nx-os/8.1\(0\)bd\(0.20\)
- canonical/cisco lan switch software
- version/cisco lan switch software/12.2\(1.107\)