CVE-2021-31777 : Vulnerability Insights and Analysis
Learn about CVE-2021-31777, an SQL Injection vulnerability in TYPO3's dce extension, enabling attackers to compromise backend user accounts and access sensitive data.
This article provides details about CVE-2021-31777, a vulnerability in the dce extension for TYPO3 that allows SQL Injection via a backend user account.
Understanding CVE-2021-31777
This section delves into the vulnerability, its impact, technical details, and mitigation steps.
What is CVE-2021-31777?
The dce (Dynamic Content Element) extension versions 2.2.0 through 2.6.x before 2.6.2, and 2.7.x before 2.7.1 in TYPO3 are affected by an SQL Injection vulnerability that can be exploited through a backend user account.
The Impact of CVE-2021-31777
The SQL Injection vulnerability in the dce extension for TYPO3 can result in unauthorized access to the system, data theft, data manipulation, and potential compromise of the entire TYPO3 instance.
Technical Details of CVE-2021-31777
This section outlines the specifics of the vulnerability, including how it can be exploited and the systems at risk.
Vulnerability Description
The vulnerability in the dce extension allows attackers to execute arbitrary SQL queries through a compromised backend user account, potentially leading to data breaches and system control.
Affected Systems and Versions
TYPO3 versions 2.2.0 through 2.6.x before 2.6.2, and 2.7.x before 2.7.1 with the dce extension installed are susceptible to this SQL Injection vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by sending specially crafted SQL queries through the backend user interface, gaining unauthorized access to the TYPO3 database.
Mitigation and Prevention
Protecting systems from CVE-2021-31777 involves immediate actions and long-term security practices.
Immediate Steps to Take
Ensure TYPO3 is updated to version 2.6.2 or 2.7.1 to mitigate the vulnerability. Monitor backend user activities for any suspicious behavior.
Long-Term Security Practices
Regularly update TYPO3 and its extensions, implement strong access controls, conduct security audits, and educate users on safe practices to enhance overall system security.
Patching and Updates
Refer to the provided resources for official patches or fixes from TYPO3, and stay informed about security advisories to address vulnerabilities promptly.