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Vigil@nce: Windows, code execution via Event System

August 2008 by Vigil@nce

SYNTHESIS

Two vulnerabilities of Microsoft Windows Event System can be used by a domain attacker to execute code on victim’s computer with system privileges.

Gravity: 3/4

Consequences: administrator access/rights

Provenance: user account

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: 13/08/2008

Identifier: VIGILANCE-VUL-8017

IMPACTED PRODUCTS

- Microsoft Windows 2000 [confidential versions]
- Microsoft Windows 2003 [confidential versions]
- Microsoft Windows 2008
- Microsoft Windows Vista [confidential versions]
- Microsoft Windows XP [confidential versions]

DESCRIPTION

The Microsoft Windows Event System handles method calls and events between applications and Windows. It has two vulnerabilities leading to code execution on victim’s computer with system privileges.

An attacker, authenticated on the domain, can connect to the computer and send a malicious "user subscription" request, which corrupts the memory. [grav:3/4; CVE-2008-1457]

An attacker, authenticated on the domain, can call a method with an array of function pointers as parameter, and use a malicious range of indexes in order to corrupt the memory. [grav:3/4; CVE-2008-1456]

CHARACTERISTICS

Identifiers: 950974, CVE-2008-1456, CVE-2008-1457, MS08-049, VIGILANCE-VUL-8017

https://vigilance.aql.fr/tree/1/8017




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