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Test ID:1.3.6.1.4.1.25623.1.0.901161
Category:Windows : Microsoft Bulletins
Title:Microsoft ASP.NET Information Disclosure Vulnerability (2418042)
Summary:Determine Microsoft ASP.NET Information Disclosure Vulnerability
Description:Description:

Overview: This host is missing a critical security update according to
Microsoft Bulletin MS10-070.

Vulnerability Insight:
The flaw is due to an error within ASP.NET in the handling of
cryptographic padding when using encryption in CBC mode. This can be
exploited to decrypt data via returned error codes from an affected server.

Impact:
Successful exploitation could allow remote attackers to decrypt and gain
access to potentially sensitive data encrypted by the server or read data
from arbitrary files within an ASP.NET application. Obtained information
may aid in further attacks.

Impact Level: System/Application

Affected Software/OS:
Microsoft ASP.NET 1.0
Microsoft ASP.NET 4.0
Microsoft ASP.NET 3.5.1
Microsoft ASP.NET 1.1 SP1 and prior
Microsoft ASP.NET 2.0 SP2 and prior
Microsoft ASP.NET 3.5 SP1 and prior

Fix:
Run Windows Update and update the listed hotfixes or download and
update mentioned hotfixes in the advisory from the below link,
http://www.microsoft.com/technet/security/bulletin/MS10-070.mspx

References:
http://www.vupen.com/english/advisories/2010/2429
http://www.microsoft.com/technet/security/bulletin/MS10-070.mspx
http://www.troyhunt.com/2010/09/fear-uncertainty-and-and-padding-oracle.html
http://weblogs.asp.net/scottgu/archive/2010/09/18/important-asp-net-security-vulnerability.aspx

CVSS Score:
5.0

CVSS Vector:
AV:N/AC:L/Au:N/C:P/I:N/A:N

Cross-Ref: BugTraq ID: 43316
Common Vulnerability Exposure (CVE) ID: CVE-2010-3332
http://isc.sans.edu/diary.html?storyid=9568
http://pentonizer.com/general-programming/aspnet-poet-vulnerability-what-else-can-i-do/
http://threatpost.com/en_us/blogs/new-crypto-attack-affects-millions-aspnet-apps-091310
http://twitter.com/thaidn/statuses/24832350146
http://www.dotnetnuke.com/Community/Blogs/tabid/825/EntryId/2799/Oracle-Padding-Vulnerability-in-ASP-NET.aspx
http://www.ekoparty.org/juliano-rizzo-2010.php
http://www.theinquirer.net/inquirer/news/1732956/security-researchers-destroy-microsoft-aspnet-security
http://www.troyhunt.com/2010/09/fear-uncertainty-and-and-padding-oracle.html
Microsoft Security Bulletin: MS10-070
http://www.microsoft.com/technet/security/Bulletin/MS10-070.mspx
http://www.securityfocus.com/bid/43316
http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:12365
http://securitytracker.com/id?1024459
http://secunia.com/advisories/41409
http://www.vupen.com/english/advisories/2010/2429
http://www.vupen.com/english/advisories/2010/2751
XForce ISS Database: ms-aspdotnet-padding-info-disclosure(61898)
http://xforce.iss.net/xforce/xfdb/61898
CopyrightCopyright (C) 2010 SecPod

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