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Insecure Library Loading
Highly critical

Mozilla Firefox Insecure Library Loading Vulnerability


Release Date:  2010-08-25    Last Update:  2010-09-08    Views:  17,934

Secunia Advisory SA41095


From remote


System access

Solution Status:

Vendor Patch

CVE Reference(s):


A vulnerability has been discovered in Mozilla Firefox, which can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to the application loading libraries (e.g. dwmapi.dll) in an insecure manner. This can be exploited to load arbitrary libraries by tricking a user into e.g. opening an HTML file located on a remote WebDAV or SMB share.

Successful exploitation allows execution of arbitrary code.

Update to version 3.6.9 or 3.5.12.

Provided and/or discovered by:
* Glafkos Charalambous
* The vendor also credits Haifei Li of FortiGuard Labs and Acros Security.

Original Advisory:

Glafkos Charalambous

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

Subject: Mozilla Firefox Insecure Library Loading Vulnerability

User Message
mlefevre RE: Mozilla Firefox Insecure Library Loading Vulnerability
Member 28th Aug, 2010 12:39
Score: 5
Posts: 1
User Since: 28th Aug 2010
System Score: N/A
Location: UK
Last edited on 28th Aug, 2010 12:39
According to , Mozilla's reference for this is , although that bug is still locked.

It seems to have been fixed in the source code, so I guess that 3.6.9 will fix this (a release candidate for 3.6.9 just came out, and it's scheduled for release on September 7th).
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RE: Mozilla Firefox Insecure Library Loading Vulnerability
This reply has been minimised due to a negative Relevancy Score.
Anthony Wells RE: Mozilla Firefox Insecure Library Loading Vulnerability
Expert Contributor 31st Aug, 2010 18:02
Score: 2384
Posts: 3,280
User Since: 19th Dec 2007
System Score: N/A
Location: N/A

Hello @petereigler ,

This thread in this "vulnerabilities" sub-forum is for discussing the technical details of the vulnerability described in the Secunia Advisory 41095 (see link just above the thread header/title.

Your question is more general concerning your system's security and it would be best reposted by creating your own thread in say the "Program" sub-forum ; for details see the column on the upper left hand side of this webpage .

Take care



It always seems impossible until its done.
Nelson Mandela
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thefly RE: Mozilla Firefox Insecure Library Loading Vulnerability
Member 8th Sep, 2010 03:14
Score: 1
Posts: 17
User Since: 3rd Nov 2009
System Score: N/A
Location: AU
Last edited on 8th Sep, 2010 03:14
Version 3.6.9 still shows up as vulnerable to this exploit. I thought this version has fixed this problem. Or maybe the database has been been updated until you have confirmed this.

The Fly
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smurphdude RE: Mozilla Firefox Insecure Library Loading Vulnerability
Contributor 8th Sep, 2010 08:36
Score: 107
Posts: 40
User Since: 13th Aug 2010
System Score: 100%
Location: UK
It's fixed along with several others according to Mozilla.
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