osTicket v1.6 RC4 Admin Login Blind SQLi Jun 27 2009 05:12AM
Adam Baldwin (adam_baldwin mail ngenuity-is com)
nGenuity Information Services - Security Advisory

Advisory ID: NGENUITY-2009-007 osTicket Admin Login Blind SQL Injection
Application: osTicket v1.6 RC4
Vendor: osTicket
Vendor website: http://www.osticket.com
Author: Adam Baldwin (adam_baldwin (at) ngenuity-is (dot) com [email concealed])

I. BACKGROUND
"osTicket is a widely-used open source support ticket system. It
seamlessly
integrates inquiries created via email and web-based forms into a
simple
easy to use multi-user web interface. Easily manage, organize and
archive
all your support requests and responses in one place while providing
your
clients with accountability and responsiveness they deserve." [1]

II. DETAILS
osTicket prior to v1.6 RC5 fails to validate / escape staff usernames
which
can be abused to execute a blind sql injection attack by an
unauthenticated
attacker.

The vendor has provided a new release v1.6 RC5 which addresses this
vulnerability.
They have also provided patching instructions [2] should you be unable
to perform
a full upgrade at this time.

One sample attack string might look similar to the following:
'+(SELECT
IF(SUBSTRING(passwd,1,1)=CHAR(48),BENCHMARK(1000000,SHA1(1)),0) passwd
FROM ost_staff where staff_id=1) and '1'='1

III. REFERENCES
[1] - http://www.osticket.com
[2] - http://osticket.com/forums/project.php?issueid=118

IV. VENDOR COMMUNICATION
3.25.2009 - Vulnerability Discovery
3.25.2009 - Vendor notification & initial vendor response
6.26.2009 - Vendor releases fix in osTicket v1.6 RC5

Copyright (c) 2009 nGenuity Information Services, LLC

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