Vulnerability Name:

CVE-2018-0428 (CCN-148402)

Assigned:2017-11-27
Published:2018-08-15
Updated:2019-10-09
Summary: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.
CVSS v3 Severity:6.7 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
5.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
6.7 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
5.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.2 High (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-269
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2018-0428

Source: BID
Type: Third Party Advisory, VDB Entry
105104

Source: CCN
Type: BID-105104
Cisco Web Security Appliance CVE-2018-0428 Local Privilege Escalation Vulnerability

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1041536

Source: XF
Type: UNKNOWN
cisco-cve20180428-priv-esc(148402)

Source: CCN
Type: Cisco Security Advisory cisco-sa-20180815-wsa-escalation
Cisco Web Security Appliance Privilege Escalation Vulnerability

Source: CISCO
Type: Vendor Advisory
20180815 Cisco Web Security Appliance Privilege Escalation Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/h:cisco:web_security_appliance:11.0.0-fcs-250:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:web_security_appliance:11.5.0-fcs-000:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:web_security_appliance:wsa10.0.0-959:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:web_security_appliance:wsa10.5.0-fcs-000:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:cisco:web_security_appliance_(wsa):5.6.0-623:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco web security appliance 11.0.0-fcs-250
    cisco web security appliance 11.5.0-fcs-000
    cisco web security appliance wsa10.0.0-959
    cisco web security appliance wsa10.5.0-fcs-000
    cisco web security appliance (wsa) 5.6.0-623