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Highly critical

Microsoft XML Core Services Multiple Vulnerabilities

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Release Date:  2007-01-09    Last Update:  2011-07-13    Views:  77,012

Secunia Advisory SA23655

Where:

From remote

Impact:

Cross Site Scripting, DoS, System access

Solution Status:

Vendor Patch

Operating System:

Software:

CVE Reference(s):

Description


Multiple vulnerabilities have been reported in Microsoft XML Core Services, which can be exploited by malicious people to gain knowledge of sensitive information or potentially compromise a user's system.

1) A race condition when parsing XML content can be exploited to corrupt memory by reloading specially crafted XML files with nested tags in multiple iframes.

Successful exploitation may allow execution of arbitrary code by e.g. tricking a user into visiting a malicious website.

NOTE: This vulnerability only affects systems with Microsoft XML Core Services 3.0 installed.

2) An error in the handling of error checks for external document type definitions (DTDs) can be exploited to violate the cross-domain policy and read contents from another domain when a user e.g. visits a malicious website or views a specially crafted HTML e-mail.

NOTE: This vulnerability only affects systems with Microsoft XML Core Services 3.0 or Microsoft XML Core Services 4.0 installed.

3) An error in the handling of transfer-encoding headers can be exploited to violate the cross-domain policy and read contents from another domain when a user e.g. visits a malicious website or views a specially crafted HTML e-mail.


Solution:
Apply patches.

Further details available to Secunia VIM customers

Provided and/or discovered by:
1) Michal Zalewski
2) The vendor credits Gregory Fleischer.
3) The vendor credits Stefano Di Paola, Minded Security.

Original Advisory:
MS08-069 (KB955218):
http://www.microsoft.com/technet/security/Bulletin/MS08-069.mspx

Michal Zalewski:
http://lists.grok.org.uk/pipermail/full-disclosure/2007-January/051616.html

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 XML Core Services Multiple Vulnerabilities

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