Vulnerability Details : CVE-2017-12335
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. An attacker could exploit this vulnerability by injecting crafted command arguments into a vulnerable CLI command and gain unauthorized access to the underlying operating system of the device. 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 an 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 Switches in standalone NX-OS mode, Nexus 9500 R-Series Line Cards and Fabric Modules, Unified Computing System Manager. Cisco Bug IDs: CSCvf14923, CSCvf14926, CSCvg04095.
Vulnerability category: Bypass
Products affected by CVE-2017-12335
- cpe:2.3:o:cisco:nx-os:8.1\(1\):*:*:*:*:*:*:*
- 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:a:cisco:unified_computing_system:7.0\(0\)hsk\(0.357\):*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-12335
0.28%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 48 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-12335
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 | |
6.3
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L |
2.0
|
3.7
|
NIST |
CWE ids for CVE-2017-12335
-
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-2017-12335
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http://www.securitytracker.com/id/1039935
Cisco NX-OS CLI Input Validation Flaw Lets Local Users Gain Elevated Privileges - SecurityTrackerThird Party Advisory;VDB Entry
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http://www.securityfocus.com/bid/102165
Cisco NX-OS System Software CVE-2017-12335 Local Command Injection Vulnerability
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https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxos4
Cisco NX-OS System Software CLI Command Injection VulnerabilityVendor Advisory
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