adMERITia Vulnerability Report
Product: Centera Universal Access
Vulnerability Type: Software Flaw
Vulnerability: SQL Injection
Impact: Attacker can bypass the authentication method and will be logged in as anarbitrary user. With specific knowledge of user names it is possible for an attackerto choose the user he/she wishes to log in as without a password.
Description: The user name field of the CUA Module Login does not sanitize user inputallowing for an attacker to run arbitrary SQL code. Through "--" syntax it ispossible to comment out the password check allowing an attacker to log in with thefirst available user name in the table. After performing this several times or bysearching through the "Accounts" tab within the CUA Module an attacker can gather alist of all users. With this list an attacker can select an administrator account andlog in with this by simply entering the user name followed by "--".
How Vulnerability can be reproduced:
For an arbitrary account enter the following in the user field: ' --
For a targeted account enter the following in the user field:valid_user_name' --
Software Version: CUA4.0_4735.p4
Operating System: Linux i386 V. 188.8.131.52-0.15_VCUA4_0_4735
Fix: (quote from the vendor)
"The remedy for the reported problems has been released on 30 June 2008 and isavailable on EMC Powerlink as CUA 4.0.1 Patch 1, under "Support -> SoftwareDownload"." Vendor URL: www.emc.com
Vendor was informed of the problem, and was very cooperative in getting a patchdeveloped for the problem. However, contact was broken off by the vendor after therelevant patch was released. The vendor has not yet published an advisory stating thereason for the latest patch or the discovered vulnerability in previous versions.This vulnerability was brought to the attention of the vendor on May 20, 2008 underthe policy of responsible disclosure as documented athttp://www.wiretrip.net/rfp/policy.html. After cooperating on a patch the vendor didnot respond to requests to release a public advisory. Therefore we have taken theinitiative to alert the public through various security publications.
Credit for this vulnerability finding should be given to:
Lars Heidelberg, adMERITia GmbH
Aaron Brown, adMERITia GmbH
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