Vulnerability Monitor

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CVE-2015-2234

Race condition in Lenovo System Update (formerly ThinkVantage System Update) before 5.06.0034 uses world-writable permissions for the update files directory, which allows local users to gain privileges by writing to an update file after the signature is validated.

Published

2015-05-12T19:59:15.027

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 6.9 (MEDIUM)

CVSSv2 Vector

AV:L/AC:M/Au:N/C:C/I:C/A:C

Access Vector: LOCAL
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

3.4

Impact Score

10.0

Weaknesses

Type: Primary
CWE-362

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	lenovo	system_update	≤ 5.06.0027	Yes

References

http://securitytracker.com/id/1032268 ([email protected])
http://support.lenovo.com/us/en/product_security/lsu_privilege Vendor Advisory ([email protected])
http://www.ioactive.com/pdfs/Lenovo_System_Update_Multiple_Privilege_Escalations.pdf ([email protected])
http://www.securityfocus.com/bid/74634 ([email protected])
http://securitytracker.com/id/1032268 (af854a3a-2127-422b-91ae-364da2661108)
http://support.lenovo.com/us/en/product_security/lsu_privilege Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.ioactive.com/pdfs/Lenovo_System_Update_Multiple_Privilege_Escalations.pdf (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/74634 (af854a3a-2127-422b-91ae-364da2661108)