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Vulnerability Note VU#522393 - LizardTech DjVu Browser Plug-in buffer overflow vulnerabilities

Vulnerability Note VU#522393 LizardTech DjVu Browser Plug-in buffer overflow vulnerabilities

Original Release date: 15 фев 2007 | Last revised: 23 фев 2007

The LizardTech DjVu Browser Plug-in contains multiple buffer overflows, which could allow an attacker to execute arbitrary code on a vulnerable system.


The LizardTech DjVu Browser Plug-in is an application that allows the user to view DjVu documents in a web browser. It is available as an ActiveX control for IE-based browsers, and as a Netscape style plug-in for other browsers such as Firefox and Safari. The LizardTech DjVu Browser Plug-in contains multiple buffer overflow vulnerabilities.

By convincing a user to view a specially crafted HTML document (e.g., a web page or an HTML email message or attachment), an attacker may be able to execute arbitrary code with the privileges of the user. The attacker could also cause the web browser to crash.

Apply an update

This issue is resolved in the DjVu Browser Plug-in version 6.1.1.

Disable the DjVu ActiveX control in Internet Explorer

    More information about how to set the kill bit is available in Microsoft Support Document 240797 . Alternatively, the following text can be saved as a .REG file and imported to set the kill bit for this control:

    Windows Registry Editor Version 5.00

Systems Affected (Learn More) CVSS Metrics (Learn More) References

This vulnerability was reported by Will Dormann of CERT/CC. The vulnerability was also independently discovered and publicly disclosed by Brett Moore of

This document was written by Will Dormann.

Other Information
  • CVE IDs: CVE-2007-0324
  • Date Public: 15 фев 2007
  • Date First Published: 15 фев 2007
  • Date Last Updated: 23 фев 2007
  • Severity Metric: 8,95
  • Document Revision: 8

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Web Browser in vu Ultimo - what? EN Enduser support

Forums Web Browser in vu+ Ultimo - what?
ds78 25 Jun 2012
Roodkapke 27 Jun 2012

VU+ first has to release something.

And since they haven't we are waiting too.

Trial 28 Jun 2012

web browser is (almost) no problem. VU+ released a browser 8 month ago. I made a package that I use on ViX and it should also run on OpenPLi. Sorry but I just found out that I deleted the file from my web space and I have to take care about that first before I can tell you how to install the browser.

How to change homepage by Registry in Edge Browser - Stack Overflow

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How to change homepage by Registry in Edge Browser

I want to change the homepage in the Edge browser via Registry but it's encrypted and I see (Protected - It is a violation of Windows Policy to modify. See in Registry. Please help me to edit homepage in Registry or find where it's a violation of Windows policy to modify. See

If it is only the homepage in Edge you want to set then change the URL below to your preference and then save this as a .reg file:

ProtectedHomepages value is not really encrypted, instead it is an obfuscated buffer which contains homepages strings and the cryptographic hash for these strings. Buffer is obfuscated using the random generated seed which is also stored as a part of the buffer. I have done some reverse engineering research and published the results here.

So, basically, reading and decrypting this value is easier than modifying due to the required crypto-hash. However, reading capability is the only required for anti-malware software. I don't know what reasons you have to modify this value, hopefully you are not writing a piece of malware.

Currently it is not possible to change the startpage of Microsoft Edge writing string or binary value into the registry. The entry to change is "Protected - It is a violation of Windows Policy to modify. See" -> Value "ProtectedHomepages". The value is a encrypted binary value, in which the current homepage is not readable. When you have to set a specific homepage more than one time and you want to do it with C# here a Workaround:

Set the startpage you want via UI of the Microsoft Edge browser. After Change of it restart the browser and export the registrykey named above. Open the exported file and copy the binary data into a string constant or resource in your C# Solution. In the function to write this Setting you can copy the string into a byte-Array and than writing as binary value into the registry. This entry has effect after restart of Microsoft Edge.

The same way you should use also when you want to Change the Default Search Provider. But in this case in addition to the value "ProtectedSearchScopes" one more registrykey is to use -> "OpenSearch". This key does/should exists by third Party search Providers only. This key should be deleted or does not exist if the search Provider is Bing.

No need to do it in registry. You can now change the homepage via the settings in Microsoft Edge

  1. Disable your computer's network interface
  2. Launch MS Edge. The recovery page will error out
  3. Open a new MS Edge tab
  4. Close the MS Edge tab containing the error message
  5. Close MS Edge
  6. Enable your computer's network interface
  7. Launch MS Edge

Some malware will change the Edge homepage. You can see the malicious URL in address bar, record it.

Kill Edge with Task Manager or reboot.

Edit your hosts file in c:\windows\system32\drivers\etc, from an Administrative command prompt go to that directory and type notepad hosts and hit Enter.

Add a host entry like this bad.url (substitute the URL you recorded above for bad.url)

Save the hosts file then open Edge. This method is helpful when you are remoted in and cannot disconnect the network connection.

VU Plus

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What Is Google Chromium OS

Probably you may have heard of Chrome browser which is developed by Google. Thanks to its fast, secure and easy-to-use user interface, Chrome becomes the most popular browser in very short time.

It is no wonder more than 40% of visitors are using Chrome to access here, Vu+ homepage.

Chromium OS looks quite similar to Chrome browser in terms of look&feel. However it is literally operating system and thousands of application can run on Chromium OS in various categories like Education, Game, Entertainment, Productivity and so on.

Chromium OS can be used for the web based service as the other modern web browser does and also a bunch of useful apps can be run. Every tab in the window can hold the web based service and application as well.

Redefine Your Experiences With Vu+

Imagine you are watching TV and your mom calls to ask if you are available to come visit her this weekend. Normally you would have to tell her to hold on, look at your phone’s calendar and then give her the reply.

But now you can keep on talking, stay seated and check your availability on the tv.

Whatever you wanted to do with your large TV screen before, now all your dreams come true thanks to open source architecture and the tremendous efforts by the enthusiastic

programmers. Facebook, YouTube, Instagram and today’s most loved apps can be accessed by power of Vu+ Chromium OS.

One of our favourites is to launch movie app when you want to find details of the movie you just watched (or will be watching).

Now thousands of apps are waiting for you and Vu+ will be gladly doing our best efforts to provide our cherished customers with best experiences ever.

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