CVE-2017-12867 : Vulnerability Insights and Analysis

In August 2017, a vulnerability was discovered in SimpleSAMLphp versions 1.14.14 and earlier, identified as CVE-2017-12867.

Understanding CVE-2017-12867

What is CVE-2017-12867?

The SimpleSAML_Auth_TimeLimitedToken class in SimpleSAMLphp versions 1.14.14 and earlier had a vulnerability that allowed attackers possessing a secret token to extend its validity period by manipulating the time offset.

The Impact of CVE-2017-12867

This vulnerability could be exploited by attackers to prolong the validity duration of a secret token, potentially leading to unauthorized access and security breaches.

Technical Details of CVE-2017-12867

Vulnerability Description

The SimpleSAML_Auth_TimeLimitedToken class in SimpleSAMLphp versions 1.14.14 and earlier allowed attackers with a secret token to extend its validity period by altering the time offset.

Affected Systems and Versions

Product: SimpleSAMLphp
Vendor: N/A
Versions: All versions up to and including 1.14.14

Exploitation Mechanism

Attackers could exploit this vulnerability by modifying the prepended time offset of a secret token, enabling them to extend its validity duration.

Mitigation and Prevention

Immediate Steps to Take

Update SimpleSAMLphp to the latest version that includes a patch for CVE-2017-12867.
Monitor for any unauthorized access or unusual activities on the system.

Long-Term Security Practices

Implement strong access controls and authentication mechanisms.
Regularly review and update security configurations and protocols.

Patching and Updates

Ensure timely installation of security patches and updates for SimpleSAMLphp to address known vulnerabilities.