CVE-2019-3878 : Security Advisory and Response
Learn about CVE-2019-3878, a high-severity vulnerability in mod_auth_mellon before v0.14.2 that allows unauthorized access by bypassing authentication mechanisms. Find mitigation steps and updates here.
A security weakness in mod_auth_mellon pre v0.14.2 allows bypassing authentication mechanisms by injecting specific HTTP headers. This vulnerability affects Apache setups configured as reverse proxies.
Understanding CVE-2019-3878
This CVE involves a vulnerability in mod_auth_mellon that can be exploited to bypass authentication mechanisms.
What is CVE-2019-3878?
The vulnerability in mod_auth_mellon before v0.14.2 allows unauthorized users to bypass authentication by injecting specific HTTP headers used for initiating the SAML ECP process.
The Impact of CVE-2019-3878
- CVSS Base Score: 8.1 (High Severity)
- Confidentiality Impact: High
- Integrity Impact: High
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: Low
Technical Details of CVE-2019-3878
This section provides detailed technical information about the CVE.
Vulnerability Description
The vulnerability in mod_auth_mellon allows unauthorized users to bypass authentication by injecting specific HTTP headers.
Affected Systems and Versions
- Affected Product: mod_auth_mellon
- Vendor: Uninett
- Affected Versions: Before v0.14.2
Exploitation Mechanism
The vulnerability can be exploited by injecting specific HTTP headers typically used for initiating the SAML ECP process, allowing unauthorized access.
Mitigation and Prevention
Protect your systems from CVE-2019-3878 with the following steps:
Immediate Steps to Take
- Update mod_auth_mellon to version v0.14.2 or later.
- Monitor network traffic for any suspicious activity.
Long-Term Security Practices
- Implement strict access controls and authentication mechanisms.
- Regularly review and update security configurations.
Patching and Updates
- Apply security patches provided by the vendor promptly to mitigate the vulnerability.