Vulnerability Name:

CVE-2014-7990 (CCN-98529)

Assigned:2014-11-06
Published:2014-11-06
Updated:2017-09-08
Summary:Cisco IOS XE 3.5E and earlier on WS-C3850, WS-C3860, and AIR-CT5760 devices does not properly parse the "request system shell" challenge response, which allows local users to obtain Linux root access by leveraging administrative privilege, aka Bug ID CSCur09815.
CVSS v3 Severity:8.2 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): Required
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:6.8 Medium (CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)
5.0 Medium (Temporal CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): Single_Instance
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)
5.0 Medium (CCN Temporal CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C/E:U/RL:OF/RC: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-20
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2014-7990

Source: CCN
Type: Cisco Security Notice
Cisco IOS XE Challenge/Response Bypass Vulnerability

Source: CISCO
Type: Vendor Advisory
20141106 Cisco IOS XE Challenge/Response Bypass Vulnerability

Source: CONFIRM
Type: Vendor Advisory
http://tools.cisco.com/security/center/viewAlert.x?alertId=36351

Source: BID
Type: UNKNOWN
70968

Source: CCN
Type: BID-70968
Cisco IOS XE Software CVE-2014-7990 Local Security Bypass Vulnerability

Source: SECTRACK
Type: UNKNOWN
1031179

Source: XF
Type: UNKNOWN
ciscoiosxe-cve20147990-sec-bypass(98529)

Source: XF
Type: UNKNOWN
ciscoiosxe-cve20147990-sec-bypass(98529)

Vulnerable Configuration:Configuration 1:
  • cpe:/o:cisco:ios_xe:*:*:*:*:*:*:*:* (Version <= 3.5e)
  • AND
  • cpe:/h:cisco:air-ct5760:*:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:ws-c3850:*:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:ws-c3860:*:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:cisco:ios_xe:*:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco ios xe *
    cisco air-ct5760 *
    cisco ws-c3850 *
    cisco ws-c3860 *
    cisco ios xe *