Alexander Kornbrust has reported some vulnerabilities in Oracle Reports and Forms, which can be exploited to gain escalated privileges, gain knowledge of certain information, overwrite arbitrary files, conduct cross-site scripting attacks, or potentially compromise a vulnerable system.

1) Input passed to various parameters is not properly sanitised before being returned to users. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of a vulnerable site.

Examples:
http://[host]:7778/reports/rwservlet/showenv?server=reptest&debug=[code]
http://[host]:7778/reports/rwservlet/parsequery?server=myserver&test=[code]
http://[host]:7778/reports/rwservlet?server=myserver+report=test.rdf+userid=
user/pass@iasdb+destype=localFile+desformat=delimited+desname=
FILE:+CELLWRAPPER=*+delimiter=[code]
http://[host]:7778/reports/rwservlet?server=myserver+report=test.rdf+userid=
user/pass@iasdb+destype=localFile+desformat=delimited+desname=
FILE:+CELLWRAPPER=[code]

The vulnerability has been reported in Oracle Reports 9.0.2 with patchset 2. Other versions may also be affected.

2) It's possible to read a small part of the beginning of any XML file on a vulnerable system by passing the path to the file in the "customize" parameter.

Example:
http://[host]:7778/reports/rwservlet?server=myserver+report=test.rdf+userid=
userid=user/pass@iasdb+destype=cache+desformat=xml+CUSTOMIZE=[path_to_file]

3) It's possible to read a small part of the beginning of any file on a vulnerable system by passing the path to the file in the "desformat" parameter.

Example:
http://[host]:7778/reports/rwservlet?server=myserver+report=test.rdf+userid=
userid=user/pass@iasdb+destype=file+MODE=CHARACTER+desformat=[path_to_file]

4) It is possible to overwrite arbitrary files by passing a specially crafted string to the "desname" parameter. On Windows, it is reportedly possible to overwrite any file. On Linux, it possible to overwrite any file belonging to the Oracle Application Server user.

The vulnerability has been reported in Oracle Reports 6.0, 6i, 9i, and 10g.

5) It is possible to execute arbitrary reports files (*.rep and *.rdf) by specifying the path to the file in the "report" parameter. This can be exploited to execute arbitrary commands with user "Oracle" or SYSTEM privileges by local users or people, who can place a malicious reports file in a directory on the server.

Example:
http://[host]:7779/reports/rwservlet?server=repserv+report=[path_to_file]
+destype=cache+desformat=PDF

The vulnerability has been reported in Oracle Reports 6.0, 6i, 9i, and 10g.

6) It is possible to execute arbitrary forms files (*.fmx) by specifying the path to the file in the "form" or "module" parameter. This can be exploited to execute arbitrary commands with user "Oracle" or SYSTEM privileges by local users or people, who can place a malicious reports file in a directory on the server.

Examples:
http://[host]:7779/forms90/f90servlet?form=[path_to_file]
http://[host]:7779/forms90/f90servlet?module=[path_to_file]

The vulnerability has been reported in Oracle Forms 4.5, 5.0, 6.0, 6i, 9i, and 10g.

Solution
Vulnerabilities #2, #3 and #4 have been fixed in Oracle Critical Patch Update (January 2006).
Further details available to Secunia VIM customers

Provided and/or discovered by
Alexander Kornbrust, Red-Database-Security.

Changelog
Further details available to Secunia VIM customers

Original Advisory
Oracle:
http://www.oracle.com/technology/deploy/security/pdf/cpujan2006.html

Red-Database-Security:
http://www.red-database-security.com/advisory/oracle_reports_various_css.html
http://www.red-database-security.com/advisory/oracle_reports_read_any_xml_file.html
http://www.red-database-security.com/advisory/oracle_reports_read_any_file.html
http://www.red-database-security.com/advisory/oracle_reports_overwrite_any_file.html
http://www.red-database-security.com/advisory/oracle_reports_run_any_os_command.html
http://www.red-database-security.com/advisory/oracle_forms_run_any_os_command.html

Other references
Further details available to Secunia VIM customers

Deep Links
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