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Vigil@nce: SQL Server, privilege elevation

July 2008 by Vigil@nce

Four vulnerabilities of SQL Server can be used by an attacker to
obtain information or to elevate his privileges.

 Gravity: 2/4
 Consequences: administrator access/rights, privileged
access/rights, data reading
 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: 09/07/2008
 Identifier: VIGILANCE-VUL-7941

IMPACTED PRODUCTS

 Microsoft SQL Server [confidential versions]
 Microsoft Windows 2000 [confidential versions]
 Microsoft Windows 2003 [confidential versions]
 Microsoft Windows 2008

DESCRIPTION

Four vulnerabilities were announced in SQL Server.

An attacker with a database operator access can obtain sensitive
information, because the content of memory pages is not
reinitialized. [grav:1/4; CVE-2008-0085]

An authenticated attacker can convert the type of long data in
order to generate a buffer overflow, and thus execute code with
system privileges. [grav:2/4; CVE-2008-0086]

An authenticated attacker can force SQL Server to load a backup
file containing long data, in order to generate a buffer overrun,
then code execution. [grav:2/4; BID-30119, CVE-2008-0107,
ISVA-080709.1]

An authenticated attacker can use an INSERT query containing long
data, in order to generate a buffer overrun, then code execution.
[grav:2/4; CVE-2008-0106]

CHARACTERISTICS

 Identifiers: 941203, BID-30119, CVE-2008-0085, CVE-2008-0086,
CVE-2008-0106, CVE-2008-0107, ISVA-080709.1, MS08-040,
VIGILANCE-VUL-7941
 Url: https://vigilance.aql.fr/tree/1/7941


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