CVE-2017-12868

9.8 CRITICAL
Published: September 01, 2017 Modified: May 13, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/simplesamlphp/simplesamlphp/commit/4bc629658e7b7d17c9ac3fe0da7dc5df71f1b85e
Source: cve@mitre.org
Issue Tracking Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2017/12/msg00007.html
Source: cve@mitre.org
https://lists.debian.org/debian-lts-announce/2018/06/msg00017.html
Source: cve@mitre.org
https://simplesamlphp.org/security/201705-01
Source: cve@mitre.org
Patch Vendor Advisory
https://github.com/simplesamlphp/simplesamlphp/commit/4bc629658e7b7d17c9ac3fe0da7dc5df71f1b85e
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2017/12/msg00007.html
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2018/06/msg00017.html
Source: af854a3a-2127-422b-91ae-364da2661108
https://simplesamlphp.org/security/201705-01
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Vendor Advisory

8 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
2.1%
80th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-384

Affected Vendors

php simplesamlphp

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