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GeekWala

CVE-2017-12868 — Vulnerability in simplesamlphp/simplesamlphp —...

CRITICAL

SimpleSAMLphp Session fixation issue and authentication bypass in the authcrypt module

Published May 14, 2022Updated April 25, 2024Source: osv

Summary

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.

Advisory Timeline

  • First published May 14, 2022 (1612 days ago).
  • Last revised April 25, 2024 — 713 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Composer
Update simplesamlphp/simplesamlphp to 1.14.14 or later
composer require "simplesamlphp/simplesamlphp:^1.14.14"

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: Packagist (1).

PackageEcosystemAffectedFixed In
simplesamlphp/simplesamlphp
Packagist
v1.14.12, v1.14.131.14.14

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2017-12868?
SimpleSAMLphp Session fixation issue and authentication bypass in the authcrypt module This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2017-12868?
CVE-2017-12868 affects simplesamlphp/simplesamlphp. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2017-12868 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-j96g-47x2-46hv

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