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Mozilla Foundation Security Advisory 2015-126

Crash when accessing HTML tables with accessibility tools on OS X

Announced
November 3, 2015
Reporter
Frédéric Wang
Impact
Moderate
Products
Firefox
Fixed in
  • Firefox 42

Description

Mozilla developer Frédéric Wang reported an issue affecting accessibility tools on OS X. This occurs when when an accessibility tool requests the index of a table row through the NSAccessibilityIndexAttribute value. This was caused by an error in how HTML tables are exposed to accessibility tools, which can result in a potentially exploitable crash.

This issue only affects OS X systems and does not affect Windows, Linux, or Android installations.

References