CVE-2019-9616 Explained : Impact and Mitigation
Discover the security flaw in OFCMS versions before 1.1.3 allowing attackers to execute unauthorized code. Learn about the impact, affected systems, exploitation, and mitigation steps.
A vulnerability was found in OFCMS version 1.1.3 and earlier, allowing attackers to execute unauthorized code by exploiting inadequate blocking of certain file types.
Understanding CVE-2019-9616
This CVE identifies a security flaw in OFCMS versions prior to 1.1.3 that enables the execution of arbitrary code by malicious actors.
What is CVE-2019-9616?
The vulnerability in OFCMS versions before 1.1.3 permits attackers to run unauthorized code due to insufficient blocking of specific file types, such as .jsp and .jspx, without considering variations like file.jsp::$DATA appended to the admin/ueditor/uploadScrawl URI.
The Impact of CVE-2019-9616
The vulnerability poses a significant risk as it allows remote attackers to execute arbitrary code, potentially leading to unauthorized access, data breaches, and system compromise.
Technical Details of CVE-2019-9616
This section delves into the technical aspects of the CVE.
Vulnerability Description
The flaw in OFCMS versions earlier than 1.1.3 arises from the inadequate blocking of .jsp and .jspx files, failing to account for variations like file.jsp::$DATA appended to the admin/ueditor/uploadScrawl URI.
Affected Systems and Versions
- Product: OFCMS
- Vendor: Not applicable
- Versions affected: 1.1.3 and earlier
Exploitation Mechanism
The vulnerability can be exploited by attackers to execute unauthorized code through the mishandling of file types like .jsp and .jspx, disregarding additional data appended to specific URIs.
Mitigation and Prevention
Protecting systems from CVE-2019-9616 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update OFCMS to version 1.1.3 or newer to mitigate the vulnerability.
- Implement strict input validation to prevent malicious file execution.
Long-Term Security Practices
- Regularly monitor and audit system logs for unusual activities.
- Conduct security training for staff to enhance awareness of potential threats.
Patching and Updates
- Stay informed about security updates and patches released by OFCMS.
- Apply patches promptly to address known vulnerabilities and enhance system security.