National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-0428 Detail

Current Description

A vulnerability in the account management subsystem of Cisco Web Security Appliance (WSA) could allow an authenticated, local attacker to elevate privileges to root. The attacker must authenticate with valid administrator credentials. The vulnerability is due to improper implementation of access controls. An attacker could exploit this vulnerability by authenticating to the device as a specific user to gain the information needed to elevate privileges to root in a separate login shell. A successful exploit could allow the attacker to escape the CLI subshell and execute system-level commands on the underlying operating system as root. Cisco Bug IDs: CSCvj93548.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.7 MEDIUM
Vector: AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H (V3.0 legend)
Impact Score: 5.9
Exploitability Score: 0.8


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

CVSS v2.0 Severity and Metrics:

Base Score: 7.2 HIGH
Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.9


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

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/105104 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1041536 Third Party Advisory VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180815-wsa-escalation Vendor Advisory

Technical Details

Vulnerability Type (View All)

  • Improper Privilege Management (CWE-269)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:h:cisco:web_security_appliance:11.0.0-fcs-250:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:web_security_appliance:11.5.0-fcs-000:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:web_security_appliance:wsa10.0.0-959:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:web_security_appliance:wsa10.5.0-fcs-000:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-0428
NVD Published Date:
08/15/2018
NVD Last Modified:
10/09/2019