CVE-2020-11063 : Security Advisory and Response

In TYPO3 CMS versions 10.4.0 and 10.4.1, a vulnerability allows time-based attacks in the password reset feature for backend users, enabling user enumeration based on email addresses. This issue has been addressed in version 10.4.2.

Understanding CVE-2020-11063

This CVE involves an observable response discrepancy in TYPO3 CMS versions 10.4.0 and 10.4.1, potentially leading to user enumeration attacks.

What is CVE-2020-11063?

In TYPO3 CMS versions 10.4.0 and 10.4.1, a flaw allows attackers to exploit the password reset functionality to conduct time-based attacks, facilitating user enumeration based on email addresses associated with backend user accounts.

The Impact of CVE-2020-11063

The vulnerability poses a low severity risk with a CVSS base score of 3.7. Attackers can leverage this issue to perform user enumeration attacks, compromising the confidentiality of backend user accounts.

Technical Details of CVE-2020-11063

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability in TYPO3 CMS versions 10.4.0 and 10.4.1 enables time-based attacks through the password reset feature, allowing attackers to enumerate users based on email addresses.

Affected Systems and Versions

Product: TYPO3 CMS
Vendor: TYPO3
Versions: >= 10.4.0, <= 10.4.1

Exploitation Mechanism

Attackers can exploit the password reset functionality in TYPO3 CMS versions 10.4.0 and 10.4.1 to conduct time-based attacks and enumerate backend user accounts.

Mitigation and Prevention

To address CVE-2020-11063, users and administrators should take immediate and long-term security measures.

Immediate Steps to Take

Upgrade TYPO3 CMS to version 10.4.2 or later to mitigate the vulnerability.
Monitor backend user accounts for any suspicious activities or unauthorized access.

Long-Term Security Practices

Regularly update and patch TYPO3 CMS to ensure the latest security fixes are applied.
Educate users on secure password practices and encourage the use of strong, unique passwords.

Patching and Updates

Ensure timely installation of security patches and updates provided by TYPO3 to prevent exploitation of known vulnerabilities.