CVE-2020-15678

High

Description

When recursing through graphical layers while scrolling, an iterator may have become invalid, resulting in a potential use-after-free. This occurs because the function APZCTreeManager::ComputeClippedCompositionBounds did not follow iterator invalidation rules. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.

SeverityHigh
CVSS8.8
Exploit probability—
ProductMozilla Firefox
PublishedOct 1, 2020
First seenOct 1, 2020

How to fix

Update
  • mozilla firefox81.0 or later
  • mozilla firefox_esr78.3 or later
  • mozilla thunderbird78.3 or later

Affected products

ProductAffected versionsFixed in
mozilla firefoxv < 81.081.0
mozilla firefox_esrv < 78.378.3
mozilla thunderbirdv < 78.378.3
opensuse leap15.1, 15.2—
debian debian_linux9.0, 10.0—

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CVE-2020-15678 · Mozilla Firefox · Dark Radar