CVE-2009-1264 in Sr Feuser Register
Summary
by MITRE
Frontend User Registration (sr_feuser_register) extension 2.5.20 and earlier for TYPO3 does not properly verify access rights, which allows remote authenticated users to obtain sensitive information such as passwords via unknown attack vectors.
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Analysis
by VulDB Data Team • 12/12/2017
The vulnerability identified as CVE-2009-1264 resides within the Frontend User Registration extension version 2.5.20 and earlier for the TYPO3 content management system. This flaw represents a critical access control weakness that undermines the security posture of TYPO3 installations relying on this extension for user management. The vulnerability specifically affects the extension's handling of access rights verification during user registration processes, creating potential pathways for unauthorized information disclosure.
The technical implementation flaw stems from insufficient authentication checks within the extension's codebase, particularly in how it validates user permissions during registration workflows. This inadequate access control mechanism allows authenticated users who should not have access to sensitive user data to potentially exploit the system through unspecified attack vectors. The vulnerability demonstrates a classic improper access control issue that aligns with CWE-285, which categorizes weaknesses related to insufficient authorization checks. The extension fails to properly validate whether users possess adequate privileges to access or retrieve sensitive information during the registration process, creating a potential information disclosure scenario.
Operationally, this vulnerability presents significant risks to organizations using TYPO3 with the affected extension, as it enables malicious authenticated users to potentially obtain sensitive user credentials and personal information. The impact extends beyond simple data exposure, as compromised user information could facilitate further attacks including account takeover, privilege escalation, or social engineering campaigns. Attackers could leverage this weakness to systematically gather user data, potentially leading to widespread credential compromise across the user base. The vulnerability's remote nature means attackers do not require physical access to the system and can exploit it from any location with network connectivity to the vulnerable TYPO3 installation.
Organizations should immediately upgrade to version 2.5.21 or later of the sr_feuser_register extension to address this vulnerability, as this represents the official fix provided by the TYPO3 community. Additionally, system administrators should conduct comprehensive audits of all installed TYPO3 extensions to identify similar access control weaknesses and ensure proper privilege validation mechanisms are in place. Security monitoring should be enhanced to detect unusual access patterns during user registration processes, and regular security assessments should be performed to identify potential authorization bypass opportunities. The mitigation strategy should also include implementing network segmentation and access controls to limit exposure of vulnerable systems, while following ATT&CK framework recommendations for detecting and preventing privilege escalation techniques that could exploit such access control flaws.