CVE-2020-6825

Firefox ESR: Mozilla developers and community members Tyson Smith and Christian Holler reported memory safety bugs…

CVE-2020-6825 is fixed in 10 products on 2 platforms, first by firefox 75.0+build3-0ubuntu0.18.04.1, released April 6, 2020. It is not reported as exploited. Patch Radar priority: High.

HighFixed on 2 platforms
CVSS
9.8
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0219
82nd percentile

Mozilla developers and community members Tyson Smith and Christian Holler reported memory safety bugs present in Firefox 74 and Firefox ESR 68.6. 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. This vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75.

Where it's fixed

ProductFixed inFixReleased
Windows apps
Mozilla Firefox ESR (en-US) 78.0esr Mozilla Firefox ESR (en-US) 78.0esr Jun 25, 2020
Linux
firefox · RHEL 8 0:68.7.0-2.el8_1 RHSA-2020:1406 Apr 8, 2020
firefox · Ubuntu 18.04.6 LTS (bionic) 75.0+build3-0ubuntu0.18.04.1 firefox 75.0+build3-0ubuntu0.18.04.1 Apr 6, 2020
firefox · Ubuntu 20.04 LTS (focal) 75.0+build3-0ubuntu1 firefox 75.0+build3-0ubuntu1 Apr 6, 2020
firefox · ol 8 0:68.7.0-2.0.1.el8_1 ELSA-2020-1406 Apr 9, 2020
firefox-geckodriver · Ubuntu 18.04.6 LTS (bionic) 75.0+build3-0ubuntu0.18.04.1 firefox-geckodriver 75.0+build3-0ubuntu0.18.04.1 Apr 6, 2020
firefox-geckodriver · Ubuntu 20.04 LTS (focal) 75.0+build3-0ubuntu1 firefox-geckodriver 75.0+build3-0ubuntu1 Apr 6, 2020
firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) 75.0+build3-0ubuntu0.18.04.1 firefox-mozsymbols 75.0+build3-0ubuntu0.18.04.1 Apr 6, 2020
firefox-mozsymbols · Ubuntu 20.04 LTS (focal) 75.0+build3-0ubuntu1 firefox-mozsymbols 75.0+build3-0ubuntu1 Apr 6, 2020
thunderbird · RHEL 8 0:68.7.0-1.el8_1 RHSA-2020:1495 Apr 16, 2020
thunderbird · Ubuntu 18.04.6 LTS (bionic) 1:68.7.0+build1-0ubuntu0.18.04.1 thunderbird 1:68.7.0+build1-0ubuntu0.18.04.1 Apr 6, 2020
thunderbird · Ubuntu 20.04 LTS (focal) 1:68.7.0+build1-0ubuntu1 thunderbird 1:68.7.0+build1-0ubuntu1 Apr 6, 2020
thunderbird · ol 8 0:68.7.0-1.0.1.el8_1 ELSA-2020-1495 Apr 18, 2020
thunderbird-gnome-support · Ubuntu 18.04.6 LTS (bionic) 1:68.7.0+build1-0ubuntu0.18.04.1 thunderbird-gnome-support 1:68.7.0+build1-0ubuntu0.18.04.1 Apr 6, 2020
thunderbird-gnome-support · Ubuntu 20.04 LTS (focal) 1:68.7.0+build1-0ubuntu1 thunderbird-gnome-support 1:68.7.0+build1-0ubuntu1 Apr 6, 2020
thunderbird-mozsymbols · Ubuntu 18.04.6 LTS (bionic) 1:68.7.0+build1-0ubuntu0.18.04.1 thunderbird-mozsymbols 1:68.7.0+build1-0ubuntu0.18.04.1 Apr 6, 2020
thunderbird-mozsymbols · Ubuntu 20.04 LTS (focal) 1:68.7.0+build1-0ubuntu1 thunderbird-mozsymbols 1:68.7.0+build1-0ubuntu1 Apr 6, 2020
xul-ext-calendar-timezones · Ubuntu 18.04.6 LTS (bionic) 1:68.7.0+build1-0ubuntu0.18.04.1 xul-ext-calendar-timezones 1:68.7.0+build1-0ubuntu0.18.04.1 Apr 6, 2020
xul-ext-calendar-timezones · Ubuntu 20.04 LTS (focal) 1:68.7.0+build1-0ubuntu1 xul-ext-calendar-timezones 1:68.7.0+build1-0ubuntu1 Apr 6, 2020
xul-ext-gdata-provider · Ubuntu 18.04.6 LTS (bionic) 1:68.7.0+build1-0ubuntu0.18.04.1 xul-ext-gdata-provider 1:68.7.0+build1-0ubuntu0.18.04.1 Apr 6, 2020
xul-ext-gdata-provider · Ubuntu 20.04 LTS (focal) 1:68.7.0+build1-0ubuntu1 xul-ext-gdata-provider 1:68.7.0+build1-0ubuntu1 Apr 6, 2020
xul-ext-lightning · Ubuntu 18.04.6 LTS (bionic) 1:68.7.0+build1-0ubuntu0.18.04.1 xul-ext-lightning 1:68.7.0+build1-0ubuntu0.18.04.1 Apr 6, 2020
xul-ext-lightning · Ubuntu 20.04 LTS (focal) 1:68.7.0+build1-0ubuntu1 xul-ext-lightning 1:68.7.0+build1-0ubuntu1 Apr 6, 2020

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