Secunia Research: Tagger LE PHP "eval()" Injection Vulnerabilities
======================================================================
Secunia Research 14/09/2006
- Tagger LE PHP "eval()" Injection Vulnerabilities -
======================================================================
Table of Contents
Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerabilities.......................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10
======================================================================
1) Affected Software
Tagger LE latest version (product has no version information).
Other versions may also be affected.
======================================================================
2) Severity
Rating: Highly critical
Impact: System Access
Where: From Remote
======================================================================
3) Vendor's Description of Software
Tagger LE is a tagboard (mini message board) that will add visitor
interactivity with your website and a form of communication to one
and another. Tagger's many features include an Administration panel,
IP Banning, Smart Auto Refresh, Smilies, Imposter prevention, and
more. A perfect addition to a website lacking interactivity. This
solution uses a Flat File Database (MySQL is not required).
Product link:
http://www.venturenine.com/
======================================================================
4) Description of Vulnerabilities
Secunia Research has discovered some vulnerabilities in Tagger LE,
which can be exploited by malicious people to compromise a vulnerable
system.
Input passed via the query string in tags.php, sign.php, and
admin/index.php isn't properly sanitised before being used in an
"eval()" call. This can be exploited to inject and execute arbitrary
PHP code via a specially crafted parameter name or value.
Examples:
http://[host]/tags.php?foo=%22.[code].%22
http://[host]/sign.php?foo=%22.[code].%22
http://[host]/admin/index.php?foo=%22.[code].%22
http://[host]/taggerLE/tags.php?foo;[code];$foo=foo
http://[host]/taggerLE/sign.php?foo;[code];$foo=foo
http://[host]/admin/index.php?foo;[code];$foo=foo
======================================================================
5) Solution
Edit the source code to ensure that input is properly sanitised.
======================================================================
6) Time Table
30/08/2006 - Initial vendor notification.
13/09/2006 - Final reminder.
14/09/2006 - Public disclosure.
======================================================================
7) Credits
Discovered by Andreas Sandblad, Secunia Research.
======================================================================
8) References
The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2006-4437 for the vulnerabilities.
======================================================================
9) About Secunia
Secunia collects, validates, assesses, and writes advisories regarding
all the latest software vulnerabilities disclosed to the public. These
advisories are gathered in a publicly available database at the
Secunia website:
http://secunia.com/
Secunia offers services to our customers enabling them to receive all
relevant vulnerability information to their specific system
configuration.
Secunia offers a FREE mailing list called Secunia Security Advisories:
http://secunia.com/secunia_security_advisories/
======================================================================
10) Verification
Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2006-62/advisory/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
======================================================================