Description

A vulnerability in the TCL scripting subsystem of Cisco NX-OS System Software could allow an authenticated, local attacker to escape the interactive TCL shell and gain unauthorized access to the underlying operating system of the device. The vulnerability exists due to insufficient input validation of user-supplied files passed to the interactive TCL shell of the affected device. An attacker could exploit this vulnerability to escape the scripting sandbox and execute arbitrary commands on the underlying operating system with the privileges of the authenticated user. To exploit this vulnerability, an attacker must have local access and be authenticated to the targeted device with administrative or tclsh execution privileges. 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 3500 Platform 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: CSCve93750, CSCve93762, CSCve93763, CSCvg04127.

Metrics

 

CVSS Version 4.0 CVSS Version 3.x CVSS Version 2.0

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score:  4.2 MEDIUM

Vector:  CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

CVSS 2.0 Severity and Vector Strings:

NIST: NVD

Base Score:  4.6 MEDIUM

Vector:  (AV:L/AC:L/Au:N/C:P/I:P/A:P)

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
http://www.securityfocus.com/bid/102168
http://www.securityfocus.com/bid/102168
http://www.securitytracker.com/id/1039936	Third Party Advisory  VDB Entry
http://www.securitytracker.com/id/1039936	Third Party Advisory  VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxos5	Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxos5	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-20	Improper Input Validation	NIST   Cisco Systems, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

6 change records found show changes

CVE Modified by CVE 11/20/2024 10:09:19 PM

Action	Type	Old Value	New Value
Added	Reference		http://www.securityfocus.com/bid/102168
Added	Reference		http://www.securitytracker.com/id/1039936
Added	Reference		https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxos5

CVE Modified by Cisco Systems, Inc. 5/14/2024 12:18:18 AM

Action	Type	Old Value	New Value

CVE Modified by Cisco Systems, Inc. 10/09/2019 7:22:58 PM

Action	Type	Old Value	New Value
Added	CWE		Cisco Systems, Inc. CWE-20

CVE Modified by Cisco Systems, Inc. 12/14/2017 9:29:03 PM

Action	Type	Old Value	New Value
Added	Reference		http://www.securityfocus.com/bid/102168 [No Types Assigned]

Initial Analysis by NIST 12/07/2017 9:57:32 AM

Action	Type	Old Value	New Value
Added	CVSS V3		AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
Added	CVSS V2		(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Added	CWE		CWE-20
Added	CPE Configuration		OR *cpe:2.3:a:cisco:unified_computing_system:7.0\(0\)hsk\(0.357\):*:*:*:*:*:*:*
Added	CPE Configuration		OR *cpe:2.3:o:cisco:nx-os:6.0\(2\)a8\(3\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:nx-os:8.0\(1\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:nx-os:8.1\(0\)bd\(0.20\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:nx-os:8.1\(0.2\)s0:*:*:*:*:*:*:* *cpe:2.3:o:cisco:nx-os:8.1\(0.59\)s0:*:*:*:*:*:*:* *cpe:2.3:o:cisco:nx-os:8.1\(1\)s5:*:*:*:*:*:*:*
Changed	Reference Type	http://www.securitytracker.com/id/1039936 No Types Assigned	http://www.securitytracker.com/id/1039936 Third Party Advisory, VDB Entry
Changed	Reference Type	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxos5 No Types Assigned	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-nxos5 Vendor Advisory

CVE Modified by Cisco Systems, Inc. 12/01/2017 9:29:04 PM

Action	Type	Old Value	New Value
Added	Reference		http://www.securitytracker.com/id/1039936 [No Types Assigned]