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Secunia Research: Pulse CMS Arbitrary File Deletion Vulnerability

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                     Secunia Research 24/03/2010

        - Pulse CMS Arbitrary File Deletion 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: 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 manipulate certain data.

Input passed via the "f" parameter to delete.php is not properly 
sanitised before deleting files. This can be exploited to delete 
arbitrary files with the permissions of the web server via directory
traversal attacks.

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-2010-0989 for the vulnerability.

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9) About Secunia

Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:

http://secunia.com/advisories/business_solutions/

Secunia also provides a publicly accessible and comprehensive advisory
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individuals, who are interested in or concerned about IT-security.

http://secunia.com/advisories/

Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the 
security and reliability of software in general:

http://secunia.com/secunia_research/

Secunia regularly hires new skilled team members. Check the URL below
to see currently vacant positions:

http://secunia.com/corporate/jobs/

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/advisories/mailing_lists/

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2010-48/

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

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