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Highly critical

Microsoft XML Core Services "substringData()" Integer Overflow

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Description


A vulnerability has been reported in Microsoft XML Core Services, which can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to an integer overflow error in the "substringData()" method of an XMLDOM/TextNode JavaScript object. This can be exploited to cause a heap-based buffer overflow via specially-crafted arguments passed to the affected method.

Successful exploitation may allow execution of arbitrary code when a user e.g. visits a malicious website.


Solution:
Apply patches.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Independently discovered by:
* An anonymous researcher, reported via iDefense Labs
* An anonymous researcher, reported via ZDI

Original Advisory:
MS07-042 (KB936227):
http://www.microsoft.com/technet/security/Bulletin/MS07-042.mspx

ZDI:
http://www.zerodayinitiative.com/advisories/ZDI-07-048.html

iDefense Labs:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=576

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 "substringData()" Integer Overflow

User Message
[+]

jesbion

RE: Microsoft XML Core Services "substringData()" Integer Overflow
This reply has been minimised due to a negative Relevancy Score.

jesbion

RE: Microsoft XML Core Services "substringData()" Integer Overflow
[+]
This reply has been minimised due to a negative Relevancy Score.

jesbion

RE: Microsoft XML Core Services "substringData()" Integer Overflow
[+]
This reply has been minimised due to a negative Relevancy Score.
Maurice Joyce RE: Microsoft XML Core Services "substringData()" Integer Overflow
Handling Contributor 3rd Aug, 2010 16:55
Score: 11309
Posts: 8,724
User Since: 4th Jan 2009
System Score: N/A
Location: UK
Last edited on 3rd Aug, 2010 16:56
Much better if U start your own thread if U have an issue with this vulnerability.

After a scan has PSI shown U have a vulnerability? If so post the path(s) to the programmes it has found.

--
Maurice

Windows 7 SP1 64 Bit OS
HP Intel Pentium i7
IE 11 for Windows 7 SP1
16GB RAM
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jesbion

RE: Microsoft XML Core Services "substringData()" Integer Overflow
[+]
This reply has been minimised due to a negative Relevancy Score.

jesbion

RE: Microsoft XML Core Services "substringData()" Integer Overflow
[+]
This reply has been minimised due to a negative Relevancy Score.
Maurice Joyce RE: Microsoft XML Core Services "substringData()" Integer Overflow
Handling Contributor 5th Aug, 2010 21:53
Score: 11309
Posts: 8,724
User Since: 4th Jan 2009
System Score: N/A
Location: UK
Last edited on 5th Aug, 2010 21:53
U have not really set up PSI correctly. By default PSI scans all hard drives whether internal or connected by USB cable.

Provided these drives are used solely for back up or are recovery drives or the i386 folder they can be safely ignored.

CREATING A GLOBAL IGNORE RULE
=============================


1.Click on the SETTINGS tab>scroll to the bottom & click on CREATE IGNORE RULE

2.In the RULE NAME BOX insert the Drive detail - My Backup Drive for example.

3.In the RULE BOX type D:\ (or the drive letter U wish to ignore). If it is the i386 folder use this - C:\windows\i386

4.Click SAVE IGNORE RULE>CLOSE

5.Carry out a full PSI rescan & all should be in order.

All hard drives will continue to be scanned by default but the result from the drives ignored will not be published.


Update 4 18:10 22/07/2010


--
Maurice

Windows 7 SP1 64 Bit OS
HP Intel Pentium i7
IE 11 for Windows 7 SP1
16GB RAM
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jesbion

RE: Microsoft XML Core Services "substringData()" Integer Overflow
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This reply has been minimised due to a negative Relevancy Score.

zeniorito

RE: Microsoft XML Core Services "substringData()" Integer Overflow
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This reply has been deleted
zeniorito RE: Microsoft XML Core Services "substringData()" Integer Overflow
Member 12th Jan, 2011 04:57
Score: -3
Posts: 2
User Since: 12th Jan 2011
System Score: N/A
Location: US
Last edited on 12th Jan, 2011 04:57
The current version of MSXML 4.0 is version 4.20.9876.0 This is the version for Windows XP SP2 all the way through Windows 7. The actual download page from Microsoft for this version is http://www.microsoft.com/downloads/en/details.aspx...

It is KB973688. I found the link by Google: MSMXL 4.0 version 4.20.987620
Don't ask how I found this to be the most current, other than it was on some Secunia PSI post which I can no longer find. Was about to install KB954430 which was version 4.20.9870.0 which would have been fine for my XP SP2 PC, but then realized it would not help those of you with Windows 7.
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Maurice Joyce RE: Microsoft XML Core Services "substringData()" Integer Overflow
Handling Contributor 12th Jan, 2011 09:54
Score: 11309
Posts: 8,724
User Since: 4th Jan 2009
System Score: N/A
Location: UK
Although the version U have is secure it is not the latest version. MS have moved on to SP3 which is the final SP. Support for SP2 ended on 13/4/2010.

Link is here:

http://www.microsoft.com/downloads/en/details.aspx...

--
Maurice

Windows 7 SP1 64 Bit OS
HP Intel Pentium i7
IE 11 for Windows 7 SP1
16GB RAM
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XtremeRaymond

RE: Microsoft XML Core Services "substringData()" Integer Overflow
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LanceHudson RE: Microsoft XML Core Services "substringData()" Integer Overflow
Member 16th Mar, 2011 23:21
Score: 0
Posts: 2
User Since: 18th Mar 2010
System Score: N/A
Location: N/A
Last edited on 16th Mar, 2011 23:21
This link provides links to all the downloads for the various OS's, including Win 7 64-bit.

http://www.microsoft.com/technet/security/bulletin...
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