Use After Free Affecting firefox-esr package, versions <52.9.0esr-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.51% (78th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-FIREFOXESR-354822
  • published11 Jul 2018
  • disclosed18 Oct 2018

Introduced: 11 Jul 2018

CVE-2018-12363  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Debian:unstable firefox-esr to version 52.9.0esr-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox-esr package and not the firefox-esr package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

A use-after-free vulnerability can occur when script uses mutation events to move DOM nodes between documents, resulting in the old document that held the node being freed but the node still having a pointer referencing it. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60, Thunderbird < 52.9, Firefox ESR < 60.1, Firefox ESR < 52.9, and Firefox < 61.