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Use After Free Affecting firefox package, versions <0:52.0-4.el7_3

Severity

 Recommended
0.0
critical
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.57% (78th percentile)

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  • Snyk IDSNYK-RHEL7-FIREFOX-4642507
  • published26 Jul 2021
  • disclosed7 Mar 2017
Report a new vulnerability Found a mistake?

Introduced: 7 Mar 2017

CVE-2017-5402  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:7 firefox to version 0:52.0-4.el7_3 or higher.
This issue was patched in RHSA-2017:0461.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

A use-after-free can occur when events are fired for a "FontFace" object after the object has been already been destroyed while working with fonts. This results in a potentially exploitable crash. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.