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CVE-2017-12868

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 byp...

Published: Sep 1, 2017Updated: May 13, 2026 Sources: CVE List NVD GHSACWE-384
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
2.1%
Top 20.4%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

Description

SimpleSAMLphp Session fixation issue and authentication bypass in the authcrypt module

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-384

Affected Products

simplesamlphp/simplesamlphpPackagistOSS Libraries
simplesamlphpsimplesamlphp
Library
OSS Libraries / generic-library
n/an/a
packagistpackage-ecosystemOSS Libraries
simplesamlphposs-projectOSS Librariesaka simplesamlphp, saml2, xml-security

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

2 techniques
Defense Evasion
Initial Access
View detailed technique mapping

References

https://nvd.nist.gov/vuln/detail/CVE-2017-12868
nvd.nist.gov
https://github.com/simplesamlphp/simplesamlphp/commit/4bc629658e7b7d17c9ac3fe0da7dc5df71f1b85e
github.com
https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/simplesamlphp/CVE-2017-12868.yaml
github.com
and 4 more references View all →

Timeline

Published
Sep 1, 2017
Last Updated
May 13, 2026

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