CVE-2019-5134 : Exploit Details and Defense Strategies
Learn about CVE-2019-5134, a vulnerability in WAGO PFC200 and PFC100 firmware versions that allows crafted authentication requests to bypass filters, potentially leading to sensitive data exposure. Find out how to mitigate and prevent this vulnerability.
A vulnerability in the authentication functionality of WAGO PFC200 and PFC100 firmware versions allows for potential information disclosure.
Understanding CVE-2019-5134
This CVE involves a vulnerability related to regular expression usage in authentication processes.
What is CVE-2019-5134?
The vulnerability in WAGO PFC200 and PFC100 firmware versions allows crafted authentication requests to bypass filters, potentially leading to sensitive data exposure.
The Impact of CVE-2019-5134
Exploitation of this vulnerability could result in the disclosure of sensitive information due to the improper handling of regular expressions in authentication mechanisms.
Technical Details of CVE-2019-5134
This section provides detailed technical insights into the CVE-2019-5134 vulnerability.
Vulnerability Description
The vulnerability involves the use of regular expressions without anchors in the Web-Based Management (WBM) authentication functionality of WAGO PFC200 versions 03.00.39(12) and 03.01.07(13), as well as WAGO PFC100 version 03.00.39(12).
Affected Systems and Versions
- WAGO PFC200 Firmware version 03.00.39(12)
- WAGO PFC200 Firmware version 03.01.07(13)
- WAGO PFC100 Firmware version 03.00.39(12)
Exploitation Mechanism
The vulnerability can be exploited by sending carefully crafted authentication requests that can bypass regular expression filters, potentially leading to the exposure of sensitive information.
Mitigation and Prevention
Protecting systems from CVE-2019-5134 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Monitor network traffic for any suspicious authentication requests.
- Implement strong access controls and authentication mechanisms.
Long-Term Security Practices
- Regularly update firmware and software to mitigate known vulnerabilities.
- Conduct security assessments and penetration testing to identify and address potential weaknesses.
Patching and Updates
- WAGO has released patches to address the vulnerability. Ensure all affected systems are updated with the latest firmware versions.