#VU9488 Privilege escalation in Cisco Systems, Inc products - CVE-2017-12330

Vulnerability identifier: #VU9488

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-12330

CWE-ID: CWE-77

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Nexus 9500 R-Series Line Cards and Fabric Modules
Hardware solutions / Routers & switches, VoIP, GSM, etc
Nexus 9000 Series Fabric Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc
Nexus 7700 Series Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc
Nexus 7000 Series Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc
Nexus 6000 Series Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc
Nexus 5600 Platform Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc
Nexus 5500 Platform Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc
Nexus 5000 Series Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc
Nexus 2000 Series Fabric Extenders
Hardware solutions / Routers & switches, VoIP, GSM, etc
Multilayer Director Switches
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Cisco Systems, Inc

Description
The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists in the CLI of Cisco NX-OS System Software due to insufficient input validation of command arguments to the CLI parser. A local attacker can inject specially crafted command arguments into a vulnerable CLI command and execute arbitrary commands at the user's privilege level.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Nexus 9500 R-Series Line Cards and Fabric Modules: All versions

: All versions

Nexus 9000 Series Fabric Switches: All versions

Nexus 7700 Series Switches: All versions

Nexus 7000 Series Switches: All versions

Nexus 6000 Series Switches: All versions

Nexus 5600 Platform Switches: All versions

Nexus 5500 Platform Switches: All versions

Nexus 5000 Series Switches: All versions

: All versions

Nexus 2000 Series Fabric Extenders: All versions

Multilayer Director Switches: All versions

: All versions

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External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nss

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.