National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-0123 Detail

Current Description

A Path Traversal vulnerability in the diagnostic shell for Cisco IOS and IOS XE Software could allow an authenticated, local attacker to use certain diagnostic shell commands that can overwrite system files. These system files may be sensitive and should not be able to be overwritten by a user of the diagnostic shell. The vulnerability is due to lack of proper input validation for certain diagnostic shell commands. An attacker could exploit this vulnerability by authenticating to the device, entering the diagnostic shell, and providing crafted user input to commands at the local diagnostic shell CLI. Successful exploitation could allow the attacker to overwrite system files that should be restricted. Cisco Bug IDs: CSCvg41950.

Source:  MITRE
Description Last Modified:  02/08/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.5 MEDIUM
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 1.8


Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): High
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 4.9 MEDIUM
Vector: (AV:L/AC:L/Au:N/C:N/I:C/A:N) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 3.9


Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): Complete
Availability (A): None
Additional Information:
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/102967 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040346 Third Party Advisory VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-ios Vendor Advisory

Technical Details

Vulnerability Type (View All)

Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-0123
NVD Published Date:
02/08/2018
NVD Last Modified:
03/13/2018