CVE-2019-15941 Explained : Impact and Mitigation
Learn about CVE-2019-15941 affecting LemonLDAP::NG versions 2.x to 2.0.5. Understand the impact, exploitation mechanism, and mitigation steps to secure your systems.
LemonLDAP::NG versions 2.x to 2.0.5 may have a vulnerability in the OpenID Connect Issuer feature that could allow attackers to bypass access control rules.
Understanding CVE-2019-15941
LemonLDAP::NG 2.x through 2.0.5 may allow attackers to bypass access control rules via a crafted OpenID Connect authorization request.
What is CVE-2019-15941?
The vulnerability in LemonLDAP::NG could be exploited by sending a specially crafted OpenID Connect authorization request to bypass access control rules.
The Impact of CVE-2019-15941
- Attackers could bypass access control rules in LemonLDAP::NG versions 2.x to 2.0.5
- Exploitation requires a specific configuration within LemonLDAP
Technical Details of CVE-2019-15941
LemonLDAP::NG 2.x through 2.0.5 may allow attackers to bypass access control rules via a crafted OpenID Connect authorization request.
Vulnerability Description
- Vulnerability in the OpenID Connect Issuer feature
- Attackers can bypass access control rules
Affected Systems and Versions
- LemonLDAP::NG versions 2.x to 2.0.5
Exploitation Mechanism
- Attacker sends a specially crafted OpenID Connect authorization request
- Configuration with less strict access control rules needed
Mitigation and Prevention
Immediate Steps to Take:
- Update LemonLDAP::NG to version 2.0.6 or later
- Review and strengthen access control rules
Long-Term Security Practices:
- Regularly update and patch LemonLDAP::NG
- Implement strict access control and filtering mechanisms
- Monitor and audit OpenID Connect authorization requests
- Educate users on secure practices
- Stay informed about security advisories and updates