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The PeopleSoft PeopleBooks component provides a CGI based search application as part of the default installation. Several of the attributes that are passed into the CGI application allow the specification of a server-side path. By entering various path values into this argument it is possible to:
- Access arbitrary files outside of the web servers document root.
- Cause a Denial of Services (DoS) on the web server host. |
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Credit:
The information has been provided by Martin O'Neal.
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Vulnerable systems:
* PeopleTools version 8.20, 8.43 and prior
The Search CGI application (psdoccgi.exe) is used within the PeopleBooks online documentation. This application accepts two arguments, headername and footername, that allow the selection of header and footer content to be returned as part of the search results HTML page.
These arguments appear to be checked for basic formatting issues. However, it is still possible to access files outside of the web server root, such as configuration files, that may contain passwords or other confidential information.
Recommendations:
PeopleSoft have released details of this and other issues under security rollup vulnerability ID 20031112, which is available to registered users from the PeopleSoft support site.
PeopleSoft recommends that customers address the vulnerability by applying the following fixes available on PeopleSoft Customer Connection.
Release Patch
8.18 8.18.15
8.19 8.19.12
8.20 8.20.03
8.42 8.42.14
8.43 8.43.11
For those who can not implement the patches promptly, as a mitigating strategy a firewall or other HTTP filtering device can be used to block queries containing sensitive strings, or as a last resort all access to the PeopleSoft application can be disabled in entirety.
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