CVE-2020-6800

High

Description

Mozilla developers and community members reported memory safety bugs present in Firefox 72 and Firefox ESR 68.4. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. In general, these flaws cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.

SeverityHigh
CVSS8.8
Exploit probability—
ProductMozilla Firefox
PublishedMar 2, 2020
First seenMar 2, 2020

How to fix

Update
  • mozilla firefox73.0 or later
  • mozilla firefox_esr68.5.0 or later
  • mozilla thunderbird68.5.0 or later

Affected products

ProductAffected versionsFixed in
mozilla firefoxv < 73.073.0
mozilla firefox_esrv < 68.5.068.5.0
mozilla thunderbirdv < 68.5.068.5.0
canonical ubuntu_linux16.04, 18.04, 19.10—

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