CVE-2017-12868

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.76% Top 30%
Vendor Advisory simplesamlphp.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://simplesamlphp.org/security/201705-01 patch vendor advisory
https://lists.debian.org/debian-lts-announce/2017/12/msg00007.html mailing list
https://github.com/simplesamlphp/simplesamlphp/commit/4bc629658e7b7d17c9ac3fe0da7dc5df71f1b85e issue tracking third party advisory patch
https://lists.debian.org/debian-lts-announce/2018/06/msg00017.html mailing list

Frequently Asked Questions

What is the severity of CVE-2017-12868?
CVE-2017-12868 has been scored as a critical severity vulnerability.
How to fix CVE-2017-12868?
To fix CVE-2017-12868, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-12868 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-12868 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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