CVE-2017-16935 : What You Need to Know
Learn about CVE-2017-16935, a vulnerability in Ametys before version 4.0.3 allowing remote attackers to bypass access restrictions and potentially perform unauthorized actions. Find mitigation steps and best security practices.
Ametys before version 4.0.3 allows remote attackers to bypass access restrictions, potentially leading to unauthorized actions.
Understanding CVE-2017-16935
What is CVE-2017-16935?
Prior to version 4.0.3, Ametys authentication was limited to URIs with "/cms/", enabling attackers to exploit certain URIs and perform unauthorized actions.
The Impact of CVE-2017-16935
The vulnerability allows attackers to circumvent access controls, potentially leading to unauthorized access and actions within the system.
Technical Details of CVE-2017-16935
Vulnerability Description
Ametys before 4.0.3 requires authentication only for URIs containing a "/cms/" substring, enabling attackers to bypass intended access restrictions.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: Not applicable
Exploitation Mechanism
Attackers can exploit the vulnerability by directly requesting specific URIs, such as "/plugins/core-ui/servercomm/messages.xml", to perform unauthorized actions like changing admin passwords.
Mitigation and Prevention
Immediate Steps to Take
- Upgrade to version 4.0.3 or later to mitigate the vulnerability.
- Implement strict access controls and authentication mechanisms.
Long-Term Security Practices
- Regularly review and update access control policies.
- Conduct security assessments and penetration testing to identify and address vulnerabilities.
Patching and Updates
- Stay informed about security updates and patches released by Ametys.