Vulnerability Description
The secureCompare method in lib/SimpleSAML/Utils/Crypto.php in SimpleSAMLphp 1.14.13 and earlier, when used with PHP before 5.6, allows attackers to conduct session fixation attacks or possibly bypass authentication by leveraging missing character conversions before an XOR operation.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Simplesamlphp | Simplesamlphp | <= 1.14.13 |
| Php | Php | <= 5.5.38 |
Related Weaknesses (CWE)
References
- https://github.com/simplesamlphp/simplesamlphp/commit/4bc629658e7b7d17c9ac3fe0daIssue TrackingPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2017/12/msg00007.html
- https://lists.debian.org/debian-lts-announce/2018/06/msg00017.html
- https://simplesamlphp.org/security/201705-01PatchVendor Advisory
- https://github.com/simplesamlphp/simplesamlphp/commit/4bc629658e7b7d17c9ac3fe0daIssue TrackingPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2017/12/msg00007.html
- https://lists.debian.org/debian-lts-announce/2018/06/msg00017.html
- https://simplesamlphp.org/security/201705-01PatchVendor Advisory
FAQ
What is CVE-2017-12868?
CVE-2017-12868 is a vulnerability with a CVSS score of 9.8 (CRITICAL). The secureCompare method in lib/SimpleSAML/Utils/Crypto.php in SimpleSAMLphp 1.14.13 and earlier, when used with PHP before 5.6, allows attackers to conduct session fixation attacks or possibly bypass...
How severe is CVE-2017-12868?
CVE-2017-12868 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2017-12868?
Check the references section above for vendor advisories and patch information. Affected products include: Simplesamlphp Simplesamlphp, Php Php.