Secunia Research: Pulse CMS Arbitrary File Writing Vulnerability

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                     Secunia Research 24/03/2010

        - Pulse CMS Arbitrary File Writing Vulnerability -

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Table of Contents

Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10

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1) Affected Software 

* Pulse CMS basic version 1.2.2

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Moderately critical
Impact: System access
        Manipulation of data
Where:  From remote

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3) Vendor's Description of Software 

"Pulse is a simple CMS designed for small websites. It enables you to
take an existing site and add content management in five minutes."

Product Link:
http://pulsecms.com/

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in Pulse CMS, which 
can be exploited by malicious users to compromise a vulnerable system.

Input passed via the "filename" and "block" parameters to view.php is
not properly sanitised before being used to write to a file. This can
be exploited to write arbitrary content to an arbitrary file via a
specially crafted POST request and allows executing arbitrary PHP
code.

Successful exploitation requires authentication.

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5) Solution 

Update to version 1.2.3.

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6) Time Table 
19/03/2010 - Vendor notified.
19/03/2010 - Vendor response.
24/03/2010 - Public disclosure.

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7) Credits 

Discovered by Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2010-0988 for the vulnerability.

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9) About Secunia

Secunia offers vulnerability management solutions to corporate
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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2010-51/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

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