Source: cve@mitre.org
Unspecified vulnerability in the Dictionary (rtgdictionary) extension 0.1.9 and earlier for TYPO3 allows attackers to execute arbitrary code via unknown vectors.
A critical vulnerability exists in the Dictionary extension for TYPO3, allowing attackers to execute arbitrary code on the server. This flaw, present in versions 0.1.9 and earlier, could lead to complete system compromise and data breaches. Immediate patching or mitigation is crucial to prevent exploitation.
Step 1: Target Identification: The attacker identifies a TYPO3 installation using the vulnerable Dictionary extension (0.1.9 or earlier).
Step 2: Payload Delivery: The attacker crafts a malicious payload, likely through a specially crafted request to a vulnerable endpoint within the Dictionary extension. The exact nature of the payload depends on the specific vulnerability, but could involve injecting malicious code into a dictionary entry, search query, or other input field.
Step 3: Code Execution: The server processes the malicious input, and the injected code is executed. This could involve executing arbitrary commands, writing files to the server, or gaining unauthorized access to sensitive data.
Step 4: Privilege Escalation (Potential): Depending on the nature of the vulnerability and the server configuration, the attacker may attempt to escalate their privileges to gain full control over the system.
The vulnerability stems from an unspecified flaw within the Dictionary extension's handling of user-supplied input. The lack of proper input validation and sanitization likely allows for the injection of malicious code. The exact nature of the vulnerability is unknown, but it likely involves a code injection flaw, potentially related to how the extension processes dictionary entries or search queries. This could manifest as a SQL injection, command injection, or other similar vulnerabilities, allowing an attacker to execute arbitrary commands on the server. The root cause is likely a failure to properly sanitize user-provided data before it is used in a sensitive operation.
While no specific APTs are directly linked to this CVE, the nature of the vulnerability makes it attractive to various threat actors. Given the potential for complete system compromise, it's a target for both financially motivated and state-sponsored actors. This vulnerability is not listed on the CISA KEV at the time of this report, but it is a high-severity vulnerability that could be added in the future.
Monitor web server logs for suspicious activity, such as unusual HTTP requests to the Dictionary extension's endpoints.
Analyze network traffic for malicious payloads, such as SQL injection attempts or command injection attempts.
Implement a Web Application Firewall (WAF) to detect and block malicious requests.
Monitor file system changes for unauthorized modifications, especially within the TYPO3 installation directory.
Use intrusion detection systems (IDS) to identify suspicious behavior, such as attempts to execute arbitrary commands.
Upgrade the Dictionary extension to a patched version (if available).
If no patch is available, remove the Dictionary extension from the TYPO3 installation.
Implement a Web Application Firewall (WAF) to filter malicious traffic.
Apply the latest security patches to the TYPO3 core and all installed extensions.
Review and harden the server configuration, including disabling unnecessary services and restricting access.
Implement strong input validation and output encoding to prevent code injection vulnerabilities.
Regularly back up the system and data to facilitate recovery in case of a successful attack.