Improper Access Control Affecting exponentcms/exponent-cms package, versions [,2.4.0]


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.08% (36th percentile)

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  • Snyk IDSNYK-UNMANAGED-EXPONENTCMSEXPONENTCMS-2364656
  • published26 Jan 2022
  • disclosed4 Nov 2016
  • creditUnknown

Introduced: 4 Nov 2016

CVE-2016-9182  (opens in a new tab)
CWE-284  (opens in a new tab)

How to fix?

There is no fixed version for exponentcms/exponent-cms.

Overview

Affected versions of this package are vulnerable to Improper Access Control. Exponent CMS 2.4 uses PHP reflection to call a method of a controller class, and then uses the method name to check user permission. But, the method name in PHP reflection is case insensitive, and Exponent CMS permits undefined actions to execute by default, so an attacker can use a capitalized method name to bypass the permission check, e.g., controller=expHTMLEditor&action=preview&editor=ckeditor and controller=expHTMLEditor&action=Preview&editor=ckeditor. An anonymous user will be rejected for the former but can access the latter.

References

CVSS Base Scores

version 3.1