critical
CVE-2020-15683
Mozilla: Memory safety bugs fixed in Firefox 82 and Firefox ESR 78.4
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Trivy's own label is CRITICAL. Rated critical by NVD, Amazon. Rated lower by Red Hat (high), Oracle (high), Ubuntu (medium).
Description
Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR 78.3. 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 Firefox ESR < 78.4, Firefox < 82, and Thunderbird < 78.4.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| amazon linux 2 | thunderbird, thunderbird-debuginfo | 78.4.3-1.amzn2.0.1 |
| alpine 3.12 | firefox, firefox-esr | 82.0-r0 and 1 more |
| alpine 3.13 | firefox, firefox-esr | 82.0-r0 and 1 more |
| alpine 3.14 | firefox, firefox-esr | 82.0-r0 and 1 more |
| alpine 3.15 | firefox, firefox-esr | 82.0-r0 and 1 more |
| alpine 3.16 | firefox, firefox-esr, thunderbird | 82.0-r0 and 2 more |
| alpine 3.17 | firefox, firefox-esr, thunderbird | 82.0-r0 and 2 more |
| alpine 3.18 | firefox, firefox-esr, thunderbird | 82.0-r0 and 2 more |
| alpine 3.19 | firefox, firefox-esr, thunderbird | 82.0-r0 and 2 more |
| alpine 3.20 | firefox, firefox-esr, thunderbird | 82.0-r0 and 2 more |
| alpine 3.21 | firefox, firefox-esr, librewolf and 1 more | 82.0-r0 and 2 more |
| alpine 3.22 | firefox, firefox-esr, librewolf and 1 more | 82.0-r0 and 2 more |
Show all 79 entries from 36 sources
| Source | Package | Fixed in |
|---|---|---|
| amazon linux 2 | thunderbird | 78.4.3-1.amzn2.0.1 |
| amazon linux 2 | thunderbird-debuginfo | 78.4.3-1.amzn2.0.1 |
| alpine 3.12 | firefox | 82.0-r0 |
| alpine 3.12 | firefox-esr | 78.5.0-r0 |
| alpine 3.13 | firefox | 82.0-r0 |
| alpine 3.13 | firefox-esr | 78.5.0-r0 |
| alpine 3.14 | firefox | 82.0-r0 |
| alpine 3.14 | firefox-esr | 78.5.0-r0 |
| alpine 3.15 | firefox | 82.0-r0 |
| alpine 3.15 | firefox-esr | 78.5.0-r0 |
| alpine 3.16 | firefox | 82.0-r0 |
| alpine 3.16 | firefox-esr | 78.5.0-r0 |
| alpine 3.16 | thunderbird | 78.5.1-r0 |
| alpine 3.17 | firefox | 82.0-r0 |
| alpine 3.17 | firefox-esr | 78.5.0-r0 |
| alpine 3.17 | thunderbird | 78.5.1-r0 |
| alpine 3.18 | firefox | 82.0-r0 |
| alpine 3.18 | firefox-esr | 78.5.0-r0 |
| alpine 3.18 | thunderbird | 78.5.1-r0 |
| alpine 3.19 | firefox | 82.0-r0 |
| alpine 3.19 | firefox-esr | 78.5.0-r0 |
| alpine 3.19 | thunderbird | 78.5.1-r0 |
| alpine 3.20 | firefox | 82.0-r0 |
| alpine 3.20 | firefox-esr | 78.5.0-r0 |
| alpine 3.20 | thunderbird | 78.5.1-r0 |
| alpine 3.21 | firefox | 82.0-r0 |
| alpine 3.21 | firefox-esr | 78.5.0-r0 |
| alpine 3.21 | librewolf | 82.0-r0 |
| alpine 3.21 | thunderbird | 78.5.1-r0 |
| alpine 3.22 | firefox | 82.0-r0 |
| alpine 3.22 | firefox-esr | 78.5.0-r0 |
| alpine 3.22 | librewolf | 82.0-r0 |
| alpine 3.22 | thunderbird | 78.5.1-r0 |
| alpine 3.23 | firefox | 82.0-r0 |
| alpine 3.23 | firefox-esr | 78.5.0-r0 |
| alpine 3.23 | librewolf | 82.0-r0 |
| alpine 3.23 | thunderbird | 78.5.1-r0 |
| alpine 3.24 | librewolf | 82.0-r0 |
| alpine edge | librewolf | 82.0-r0 |
| debian 10 | firefox-esr | 78.4.0esr-1~deb10u2 |
| debian 10 | thunderbird | 1:78.4.0-1~deb10u1 |
| debian 11 | firefox-esr | 78.4.0esr-1 |
| debian 11 | thunderbird | 1:78.4.0-1 |
| debian 12 | firefox-esr | 78.4.0esr-1 |
| debian 12 | thunderbird | 1:78.4.0-1 |
| debian 13 | firefox-esr | 78.4.0esr-1 |
| debian 13 | thunderbird | 1:78.4.0-1 |
| debian 14 | firefox-esr | 78.4.0esr-1 |
| debian 14 | thunderbird | 1:78.4.0-1 |
| debian 9 | firefox-esr | 78.4.0esr-1~deb9u1 |
| debian 9 | thunderbird | 1:78.4.0-1~deb9u1 |
| echo | firefox-esr | 78.4.0esr-1 |
| echo | thunderbird | 1:78.4.0-1 |
| Oracle Linux 6 | thunderbird | 78.4.0-1.0.1.el6_10 |
| Oracle Linux 7 | firefox | 78.4.0-1.0.1.el7_9 |
| Oracle Linux 7 | thunderbird | 78.4.0-1.0.1.el7_9 |
| Oracle Linux 8 | firefox | 78.4.0-1.0.1.el8_2 |
| Oracle Linux 8 | thunderbird | 78.4.0-1.0.1.el8_3 |
| ubuntu 16.04 | firefox | 82.0+build2-0ubuntu0.16.04.5 |
| ubuntu 18.04 | firefox | 82.0+build2-0ubuntu0.18.04.1 |
| ubuntu 18.04 | thunderbird | 1:78.8.1+build1-0ubuntu0.18.04.1 |
| ubuntu 20.04 | firefox | 82.0+build2-0ubuntu0.20.04.1 |
| ubuntu 20.04 | thunderbird | 1:78.7.1+build1-0ubuntu0.20.04.1 |
| ubuntu 20.10 | firefox | 82.0+build2-0ubuntu0.20.10.1 |
| ubuntu 20.10 | thunderbird | 1:78.5.0+build3-0ubuntu0.20.10.1 |
| ubuntu 21.04 | firefox | 82.0.2+build1-0ubuntu1 |
| ubuntu 21.04 | thunderbird | 1:78.4.3+build1-0ubuntu1 |
| ubuntu 21.10 | firefox | 82.0.2+build1-0ubuntu1 |
| ubuntu 21.10 | thunderbird | 1:78.4.3+build1-0ubuntu1 |
| ubuntu 22.04 | firefox | 82.0.2+build1-0ubuntu1 |
| ubuntu 22.04 | thunderbird | 1:78.4.3+build1-0ubuntu1 |
| ubuntu 22.10 | firefox | 82.0.2+build1-0ubuntu1 |
| ubuntu 22.10 | thunderbird | 1:78.4.3+build1-0ubuntu1 |
| ubuntu 23.04 | firefox | 82.0.2+build1-0ubuntu1 |
| ubuntu 23.04 | thunderbird | 1:78.4.3+build1-0ubuntu1 |
| ubuntu 23.10 | firefox | 82.0.2+build1-0ubuntu1 |
| ubuntu 23.10 | thunderbird | 1:78.4.3+build1-0ubuntu1 |
| ubuntu 24.04 | firefox | 82.0.2+build1-0ubuntu1 |
| ubuntu 24.04 | thunderbird | 1:78.4.3+build1-0ubuntu1 |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00057.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00062.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00074.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00077.html
- https://access.redhat.com/security/cve/CVE-2020-15683
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1576843%2C1656987%2C1660954%2C1662760%2C1663439%2C1666140
- https://linux.oracle.com/cve/CVE-2020-15683.html
- https://linux.oracle.com/errata/ELSA-2020-4947.html
All 22 references
- https://lists.debian.org/debian-lts-announce/2020/10/msg00027.html
- https://nvd.nist.gov/vuln/detail/CVE-2020-15683
- https://security.gentoo.org/glsa/202010-08
- https://ubuntu.com/security/notices/USN-4599-1
- https://ubuntu.com/security/notices/USN-4599-2
- https://ubuntu.com/security/notices/USN-4647-1
- https://www.cve.org/CVERecord?id=CVE-2020-15683
- https://www.debian.org/security/2020/dsa-4780
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-45/#CVE-2020-15683
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-46/#CVE-2020-15683
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-47/#CVE-2020-15683
- https://www.mozilla.org/security/advisories/mfsa2020-45/
- https://www.mozilla.org/security/advisories/mfsa2020-46/
- https://www.mozilla.org/security/advisories/mfsa2020-47/