Vulnerability Name:

CVE-2015-8109 (CCN-126586)

Assigned:2015-11-19
Published:2015-11-19
Updated:2017-04-29
Summary:Lenovo System Update (formerly ThinkVantage System Update) before 5.07.0019 allows local users to gain privileges by making a prediction of tvsu_tmp_xxxxxXXXXX account credentials that requires knowledge of the time that this account was created, aka a "temporary administrator account vulnerability."
CVSS v3 Severity:7.0 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.1 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/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): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
7.0 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.1 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/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): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:6.9 Medium (CVSS v2 Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
6.0 Medium (CCN CVSS v2 Vector: AV:L/AC:H/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): High
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-255
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2015-8109

Source: BID
Type: UNKNOWN
98039

Source: CCN
Type: BID-98039
Lenovo System Update CVE-2015-8109 Local Privilege Escalation Vulnerability

Source: XF
Type: UNKNOWN
lenovo-cve20158109-priv-esc(126586)

Source: MISC
Type: Exploit, Third Party Advisory
https://ioactive.com/pdfs/IOActive_Advisory_Lenovo_SystemUpdate-Insecure-Random-Admin-Password.pdf

Source: CCN
Type: Lenovo Security Advisory: LEN-2015-011
Lenovo System Update Privilege Escalation

Source: CONFIRM
Type: Vendor Advisory
https://support.lenovo.com/us/en/product_security/lsu_privilege

Vulnerable Configuration:Configuration 1:
  • cpe:/a:lenovo:lenovo_system_update:*:*:*:*:*:*:*:* (Version <= 5.07.0013)

    • * Denotes that component is vulnerable
    BACK
    lenovo lenovo system update *