CVE-2017-11428 : Security Advisory and Response
Learn about CVE-2017-11428 affecting OneLogin Ruby-SAML versions prior to 1.6.0. Understand the impact, technical details, and mitigation steps for this authentication bypass vulnerability.
OneLogin Ruby-SAML versions prior to 1.6.0 may allow an attacker to manipulate SAML data, potentially bypassing authentication to SAML service providers.
Understanding CVE-2017-11428
This CVE involves a vulnerability in OneLogin Ruby-SAML that could enable an attacker to bypass authentication mechanisms.
What is CVE-2017-11428?
The versions of OneLogin Ruby-SAML before 1.6.0 might misuse XML DOM traversal and canonicalization APIs, allowing an attacker to manipulate SAML data without invalidating the cryptographic signature. This manipulation could lead to authentication bypass to SAML service providers.
The Impact of CVE-2017-11428
- CVSS Score: 7.7 (High Severity)
- Confidentiality Impact: High
- Integrity Impact: None
- Attack Vector: Network
- Privileges Required: Low
- Scope: Changed
- The vulnerability poses a high risk as it could compromise the confidentiality of sensitive information.
Technical Details of CVE-2017-11428
OneLogin Ruby-SAML 1.6.0 and earlier may incorrectly utilize XML DOM traversal and canonicalization APIs, allowing an attacker to manipulate SAML data without invalidating the cryptographic signature.
Vulnerability Description
The vulnerability enables attackers to manipulate SAML data, potentially bypassing authentication to SAML service providers.
Affected Systems and Versions
- Affected Product: Ruby-SAML
- Vendor: OneLogin
- Affected Versions: < 1.6.0 (unspecified version type: custom)
Exploitation Mechanism
The vulnerability arises from incorrect usage of XML DOM traversal and canonicalization APIs, enabling unauthorized manipulation of SAML data.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent exploitation of this vulnerability.
Immediate Steps to Take
- Update OneLogin Ruby-SAML to version 1.6.0 or newer.
- Monitor for any unauthorized access or unusual activities.
Long-Term Security Practices
- Regularly review and update security configurations.
- Conduct security assessments and audits to identify vulnerabilities.
Patching and Updates
- Apply security patches promptly to mitigate known vulnerabilities and enhance system security.