Another freakin' virus - Page 2

23-08-2003, 00:22

People who write & cause all these viruses must have a screw loose. Have they really nothing better to do in life than to try to harm & wreck other people's computers. These people really do need bloody help

Lord Nikon · 23-08-2003, 07:59

They could be students on the canadian virus writing course

Shaun · 07-09-2003, 18:45

I just recieved this by e-mail:

TITLE:
Special Update: Microsoft Internet Explorer Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA9580

VERIFY ADVISORY:
http://www.secunia.com/advisories/9580/

CRITICAL:
Extremely critical

IMPACT:
System access

WHERE:
From remote

REVISION:
3.0 originally posted 2003-08-20

SOFTWARE:
Microsoft Internet Explorer 6
Microsoft Internet Explorer 5.5
Microsoft Internet Explorer 5.01

DESCRIPTION:
Microsoft has issued a cumulative patch for Internet Explorer, which fixes multiple vulnerabilities. The worst vulnerability can lead to execution of arbitrary code on the client system via HTML emails or web sites.

1) A cross domain vulnerability exists in the way Internet Explorer retrieves files from the cache. This can be exploited by a malicious HTML document to execute arbitrary scripting in the "My Computer Zone".

2) Internet Explorer determines whether an object is safe when it interprets the file extension specified in the "Object Data" tag. This allows a malicious person to specify a "safe" file with eg. a ".html" extension in "Object Data", which causes Internet Explorer to interpret it as a "safe" file. However, when the file is retrieved by Internet Explorer the "Content-Type" header determines how the file will be treated. This allows an executable file like a ".hta" file to be treated as a "safe" file and be executed silently without restrictions.

NOTE: Further information has been released by http-equiv, proving that the patch from Microsoft is not adequate. Please refer to solution section.

Secunia has constructed a vulnerability test, which can be used to check if you are affected by this issue: http://www.secunia.com/MS03-032/

3) The Kill Bit will be set on the Windows Reporting Tool ActiveX control "BR549.DLL". This ActiveX control contains a vulnerability which could be exploited by malicious HTML documents to execute arbitrary code.

Furthermore, a language specific variant of the older object type tag buffer overflow vulnerability (MS03-020) has been identified and is fixed in this patch.

This update also fixes other minor issues.

The "Object Data" vulnerability is straight forward to exploit. In many ways this vulnerability is similar to MS01-020 which was exploited by notorious viruses like Nimda, Badtrans and Klez.

NOTE: Secunia has discovered exploitation of the "Object Data" vulnerability in the wild. Analysis shows that the exploit installs a program called ADPlus module or SurferBar, which is added to a users Internet Explorer and contains links to various porn sites. The exploit does the following:

1) User receives an email, which exploits the "Object Data" vulnerability.
2) The resource "a.cgi" is automatically requested from a webserver (63.246.130.201), which installs the file "drg.exe" in "C:\".
3) The file is then executed and saves the resource "surferbar.dll" from the same webserver as "win32.dll" (originally named
"adplus.dll") in the "C:\\Program Files\" directory.
4) The file "win32.dll" is then executed by "regsvr32" and adds a bar to the user's Internet Explorer.

SOLUTION:
Deactivate Active Scripting in Internet Explorer, until a patch becomes available which fixes the new variant of the "Object Data" vulnerability.

NOTE: The patch below does not fix the variant of the "Object Data" vulnerability discovered by http-equiv.

The patch is available from: http://windowsupdate.microsoft.com/
or http://www.microsoft.com/windows/ie/...25/default.asp

REPORTED BY / CREDITS:
1) Yu-Arai, LAC
2) Drew Copley, eEye Digital Security
3) Greg Jones, KPMG UK

http-equiv has supplied additional information about exploitation of the "Object Data" vulnerability.

CHANGELOG:
2003-08-21: Updated critical rating and description due to detailed information from eEye.
2003-08-22: Included link to Secunia vulnerability test.
2003-09-03: Secunia has discovered exploitation of the "Object Data" vulnerability in the wild.
2003-09-07: Patch for the "Object Data" vulnerability has been proven inadequate by http-equiv.

ORIGINAL ADVISORY: http://www.microsoft.com/technet/sec...n/MS03-032.asp
http://www.eeye.com/html/Research/Ad...D20030820.html

----------------------------------------------------------------------

Secunia recommends that you verify all advisories you receive, by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor.

Contact details:
Web : http://www.secunia.com/
E-mail : support@secunia.com
Tel : +45 7020 5144
Fax : +45 7020 5145

I'm off to find the patch.