Vulnerability Details : CVE-2017-12339
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.
Products affected by CVE-2017-12339
- cpe:2.3:o:cisco:nx-os:7.0\(0\)hsk\(0.357\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:nx-os:8.1\(0\)bd\(0.20\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:nx-os:8.0\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:lan_switch_software:12.2\(1.107\):*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-12339
0.14%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 30 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-12339
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
NIST | |
5.7
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L |
1.5
|
3.7
|
NIST |
CWE ids for CVE-2017-12339
-
The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.Assigned by:
- nvd@nist.gov (Primary)
- ykramarz@cisco.com (Secondary)
References for CVE-2017-12339
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http://www.securitytracker.com/id/1039938
Cisco NX-OS CLI Parser Bug Lets Local Users Gain Elevated Privileges - SecurityTrackerThird Party Advisory;VDB Entry
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https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxos7
Cisco NX-OS System Software CLI Command Injection VulnerabilityVendor Advisory
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http://www.securityfocus.com/bid/102198
Cisco NX-OS System Software CVE-2017-12339 Local Command Injection Vulnerability
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