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Microsoft Indexing Service: code execution
Synthesis of the vulnerability
An attacker can invite the victim using Indexing Service to connect to a malicious IIS web server, in order to execute code on his computer.
Impacted systems: Microsoft Indexing Service, Windows 2000, Windows 2003, Windows XP.
Severity of this alert: 3/4.
Consequences of an intrusion: user access/rights.
Pirate's origin: internet server.
Creation date: 14/10/2009.
Références of this alert: 969059, BID-36629, CERTA-2009-AVI-437, CVE-2009-2507, MS09-057, VIGILANCE-VUL-9089.
Description of the vulnerability
The Microsoft Indexing Service analyzes and indexes local documents, or remote documents located on an IIS web server. When the user connects to an IIS server, Internet Explorer calls the ixsso.dll ActiveX to index the web site.
However, if the url of the web site is malformed, an memory corruption occurs in this ActiveX.
An attacker can therefore invite the victim using Indexing Service to connect to a malicious IIS web server, in order to execute code on his computer.
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