Improper input validation in Matomo

CVE-2009-4137

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.169 (96.7th percentile) — read the EPSS interpretation.

Affected products

  • Matomo — versions 0.2.25, 0.2.26, 0.2.27
  • N/a — versions n/a

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2009-4137?
CVE-2009-4137 is a vulnerability in Matomo, classified under Improper Input Validation. Published 2009-12-24.
Is CVE-2009-4137 known to be exploited?
4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.