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Vigil@nce: Windows 2000, 2003, XP, privileges elevation via CSRSS

February 2010 by Vigil@nce

SYNTHESIS OF THE VULNERABILITY

A local attacker can execute a process which keeps executing after his logout, and captures data of next users connecting to the system.

Severity: 2/4

Consequences: administrator access/rights, privileged access/rights, user access/rights

Provenance: user shell

Means of attack: no proof of concept, no attack

Ability of attacker: expert (4/4)

Confidence: confirmed by the editor (5/5)

Diffusion of the vulnerable configuration: high (3/3)

Creation date: 10/02/2010

IMPACTED PRODUCTS

- Microsoft Windows 2000
- Microsoft Windows 2003
- Microsoft Windows XP

DESCRIPTION OF THE VULNERABILITY

The CSRSS (Windows Client/Server Run-time Subsystem) manages users treads and processes.

When a user logouts, CSRSS should end his processes. However, this is not the case.

A local attacker can therefore execute a process which keeps executing after his logout, and captures data of next users connecting to the system.

CHARACTERISTICS

Identifiers: 978037, CVE-2010-0023, MS10-011, VIGILANCE-VUL-9435

http://vigilance.fr/vulnerability/W...




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