CVE-2022-47409 : Exploit Details and Defense Strategies

A critical vulnerability discovered in the fp_newsletter extension for TYPO3 allows attackers to unsubscribe everyone through specially crafted subscription UIDs, impacting confidentiality and integrity.

Understanding CVE-2022-47409

This section provides insights into the nature and impact of CVE-2022-47409.

What is CVE-2022-47409?

The vulnerability in the fp_newsletter extension enables attackers to unsubscribe all users by manipulating subscription UIDs, posing a significant risk to data confidentiality and integrity.

The Impact of CVE-2022-47409

With a CVSS base score of 9.1, this critical vulnerability has a severe impact on affected TYPO3 installations. The attack vector is over the network with low complexity, requiring no privileges from the attacker.

Technical Details of CVE-2022-47409

Explore the technical aspects related to CVE-2022-47409 to understand the vulnerability better.

Vulnerability Description

The flaw in the fp_newsletter extension allows attackers to exploit deleteAction operations with modified subscription UIDs to mass unsubscribe users.

Affected Systems and Versions

All versions of the fp_newsletter extension before 1.1.1, 1.2.0, 2.x before 2.1.2, 2.2.1 through 2.4.0, and 3.x before 3.2.6 for TYPO3 are vulnerable to this issue.

Exploitation Mechanism

Attackers leverage specially crafted subscription UIDs in deleteAction operations to trigger mass unsubscriptions, compromising data confidentiality and integrity.

Mitigation and Prevention

Learn about the steps to mitigate the risks associated with CVE-2022-47409 and prevent potential exploitation.

Immediate Steps to Take

TYPO3 administrators should update the fp_newsletter extension to versions 1.1.1, 1.2.0, 2.1.2, 2.2.1, 2.4.0, or 3.2.6 to address this vulnerability and prevent unauthorized unsubscriptions.

Long-Term Security Practices

Practicing secure coding, conducting regular security audits, and implementing access controls can enhance the overall security posture of TYPO3 installations.

Patching and Updates

Regularly monitor security advisories from TYPO3 and apply security patches promptly to protect the system from known vulnerabilities.