JSP multiple Web Application server causes JSP source Leakage Vulnerability _jsp programming

Source: Internet
Author: User
Tags websphere application server
JSP multiple Web application servers cause JSP source code leak vulnerability

Author: Sino-Lian NSFocus: Jsper


Affected Systems:
BEA Systems Weblogic 4.5.1

-Microsoft Windows NT 4.0

BEA Systems Weblogic 4.0.4

-Microsoft Windows NT 4.0

BEA Systems Weblogic 3.1.8

-Microsoft Windows NT 4.0

IBM Websphere Application Server 3.0.21

-Sun Solaris 8.0

-Microsoft Windows NT 4.0

-Linux Kernel 2.3.x

-IBM AIX 4.3

Unify Ewave servletexec 3.0

-Sun Solaris 8.0

-Microsoft Windows 98

-Microsoft Windows NT 4.0

-Microsoft Windows NT 2000

-Linux Kernel 2.3.x

-IBM AIX 4.3.2

-HP-UX 11.4

Describe:

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

 

Many webserver are sensitive to capitalization, but the case mappings for suffixes are not handled correctly. As long as the JSP or jhtml file suffix is written to uppercase in the URL, the Web server does not properly handle the file suffix, and as a plain text display, the attacker may get the source code for those programs.

<* Source: Stuart.mcclure@FOUNDSTONE.COM *>

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

Suggestions:

Unify Ewave servletexec:

Unify says the default installed servlet does not leak source code

BEA Systems Weblogic:

Interim solution:

Add handler processing to all possible capitalization suffixes:

. jsp Files:

. jsp. JSP. JSP. JSP. JSP. JSP. Jsp. Jsp

. jhtml File:

. jhtml. Jhtml. Jhtml. Jhtml. Jhtml. Jhtml. JHtml. JhTml

. JhtMl. JhtmL. JhtmL. JhtmL JhtmL JhtmL. JhtmL

. JHTml. JHtMl. JHtmL. JhTMl. JhTmL. JhtML. JhtML. JhtML

. JHtML. JHtML. JHTMl. JHTmL. JhTML. JhTML. JHTML

The manufacturer has provided a patch for version 3.1.8, which can be downloaded at the following address:

Ftp://ftpna.beasys.com/pub/releases/318/caseSensitiveNTFix318.zip

IBM WebSphere Application Server:

IBM has provided the appropriate patch, address in:

Http://www-4.ibm.com/software/webservers/appserv/efix.html

Renew Date: 2000-07-12 excerpted from: Green Corps
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