Critical severity · published Oct 22, 2020
CVE-2020-15683
Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR 78.3
9.8
CVSS
2.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.7% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 82.0 · source: NVD
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
FE
Firefox Esr · Mozilla
before 78.4 · source: NVD
LE
Leap · Opensuse
15.1; 15.2 · source: NVD
TH
Thunderbird · Mozilla
before 78.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-15683
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-15683
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00057.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00062.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00074.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00077.html
Broken Link
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1576843%2C1656987%2C1660954%2C1662760%2C1663439%2C1666140
Mailing List
https://lists.debian.org/debian-lts-announce/2020/10/msg00027.html
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