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Secunia Research: Pulse CMS Arbitrary File Upload Vulnerability

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====================================================================== Secunia Research 08/04/2010 - Pulse CMS Arbitrary File Upload Vulnerability - ====================================================================== 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 ====================================================================== 1) Affected Software * Pulse CMS basic version 1.2.2 and 1.2.3 NOTE: Other versions may also be affected. ====================================================================== 2) Severity Rating: Moderately critical Impact: System access Where: From remote ====================================================================== 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/ ====================================================================== 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. An error in the validation of uploaded image files can be exploited to upload files with an arbitrary extension to a folder within the web root. This can be exploited to upload and execute arbitrary PHP code. Successful exploitation requires authentication. ====================================================================== 5) Solution Partially fixed in version 1.2.4. It can still be exploited to execute arbitrary PHP code by uploading a malicious PHP script with multiple extensions (e.g. "shell.php.gif") if Apache is not configured to handle the mime-type for media files with an e.g. "gif" extension. ====================================================================== 6) Time Table 19/03/2010 - Vendor notified. 19/03/2010 - Vendor response. 08/04/2010 - Public disclosure. ====================================================================== 7) Credits Discovered by Secunia Research. ====================================================================== 8) References The Common Vulnerabilities and Exposures (CVE) project has assigned CVE-2010-0993 for the vulnerability. ====================================================================== 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 database as a service to the security community and private 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/ ====================================================================== 10) Verification Please verify this advisory by visiting the Secunia website: http://secunia.com/secunia_research/2010-47/ Complete list of vulnerability reports published by Secunia Research: http://secunia.com/secunia_research/ ======================================================================


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