Description
Mozilla developers reported memory safety bugs present in Firefox 76 and Firefox ESR 68.8. 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 < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.
References (5)
Core 5
Core References
Vendor Advisory x_refsource_misc
https://www.mozilla.org/security/advisories/mfsa2020-20/
Vendor Advisory x_refsource_misc
https://www.mozilla.org/security/advisories/mfsa2020-21/
Vendor Advisory x_refsource_misc
https://www.mozilla.org/security/advisories/mfsa2020-22/
Issue Tracking, Vendor Advisory x_refsource_misc
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1619305%2C1632717
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4421-1/
Scores
CVSS v3
8.8
EPSS
0.0078
EPSS Percentile
74.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Details
CWE
CWE-787
Status
published
Products (6)
canonical/ubuntu_linux
16.04
canonical/ubuntu_linux
18.04
canonical/ubuntu_linux
19.10
canonical/ubuntu_linux
20.04
mozilla/firefox
< 76.0
mozilla/firefox_esr
< 68.8.0
Published
Jul 09, 2020
Tracked Since
Feb 18, 2026