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CVE-2009-4137

7.5 · HIGH

The loadContentFromCookie function in core/Cookie.php in Piwik before 0.5 does not validate strings obtained from cookies before calling the unserialize function, which allows remote attackers to e…

Published Dec 24, 2009matomoCWE-20EPSS 16.95%

Overview

CVE-2009-4137 is a high-severity vulnerability affecting matomo matomo. It was published on December 24, 2009 and has a CVSS 2.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The loadContentFromCookie function in core/Cookie.php in Piwik before 0.5 does not validate strings obtained from cookies before calling the unserialize function, which allows remote attackers to execute arbitrary code or upload arbitrary files via vectors related to the __destruct function in the Piwik_Config class; php://filter URIs; the __destruct functions in Zend Framework, as demonstrated by the Zend_Log destructor; the shutdown functions in Zend Framework, as demonstrated by the Zend_Log_Writer_Mail class; the render function in the Piwik_View class; Smarty templates; and the _eval function in Smarty.

Remediation

Check the references section for vendor advisories and patches from matomo. Update matomo to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refdev.piwik.org/trac/changeset/1637Refpiwik.org/blog/2009/12/piwik-response-to-shocking-news-in-php-exploitation/Refwww.openwall.com/lists/oss-security/2009/12/09/2Refwww.openwall.com/lists/oss-security/2009/12/10/1Refwww.openwall.com/lists/oss-security/2009/12/14/2Refwww.sektioneins.de/en/advisories/advisory-032009-piwik-cookie-unserialize-vulnerability/Refwww.suspekt.org/2009/12/09/advisory-032009-piwik-cookie-unserialize-vulnerability/Refwww.suspekt.org/downloads/POC2009-ShockingNewsInPHPExploitation.pdfRefdev.piwik.org/trac/changeset/1637Refpiwik.org/blog/2009/12/piwik-response-to-shocking-news-in-php-exploitation/

How CyberStrike helps

Frequently asked questions

What is CVE-2009-4137?

CVE-2009-4137 is a high-severity vulnerability affecting matomo matomo. It was published on December 24, 2009 and has a CVSS 2.0 base score of 7.5 (HIGH).

How severe is CVE-2009-4137?

This vulnerability has a CVSS 2.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-4137?

Check the references section for vendor advisories and patches from matomo. Update matomo to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2009-4137?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-4137 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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