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Insecure Library Loading
Moderately critical

Microsoft Windows Active Directory Two Vulnerabilities

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Description


Two vulnerabilities have been reported in Microsoft Windows, which can be exploited by malicious people to cause a DoS (Denial of Service) or potentially compromise a vulnerable system.

1) An error in the Active Directory LDAP service can be exploited to exhaust all available system memory via a large number of LDAP or LDAPS requests containing hexadecimal encoded strings.

Successful exploitation may allow execution of arbitrary code.

NOTE: The vulnerability affects Microsoft Windows 2000 Server systems only.

2) A memory leak error in the Active Directory LDAP service can be exploited to potentially hang an affected system via specially crafted LDAP or LDAPS requests containing specific OID filters.


Solution:
Apply patches.

Further details available to Secunia VIM customers

Provided and/or discovered by:
1) Joshua J. Drake of VeriSign iDefense Labs
2) The vendor credits Justin Wyatt from the Beaverton School District

Original Advisory:
Microsoft (KB971055, KB969805, KB970437):
http://www.microsoft.com/technet/security/Bulletin/MS09-018.mspx

iDefense:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=804

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Microsoft Windows Active Directory Two Vulnerabilities

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