WordPress Core < 4.2.4 - Timing Side-Channel Attack

Observable Timing Discrepancy
CVE CVE-2015-5730
CVSS Medium (5.3)
Publicly Published August 4, 2015
Last Updated January 22, 2024
Researcher Johannes Schmitt
Description

The sanitize_widget_instance function in wp-includes/class-wp-customize-widgets.php in WordPress before 4.2.4 does not use a constant-time comparison for widgets, which allows remote attackers to conduct a timing side-channel attack by measuring the delay before inequality is calculated.

References

1 affected software package

Software Type Core
Software Slug wordpress (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 3.7
  • 3.7 - 3.7.9
  • 3.8 - 3.8.9
  • 3.9 - 3.9.7
  • 4.0 - 4.0.6
  • 4.1 - 4.1.6
  • 4.2 - 4.2.3
Patched Version
  • 3.7.10
  • 3.8.10
  • 3.9.8
  • 4.0.7
  • 4.1.7
  • 4.2.4
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