High severity · published Feb 28, 2019
CVE-2018-12397
A WebExtension can request access to local files without the warning prompt stating that the extension will "Access your data for all websites" being displayed to the user
7.1
CVSS
0.4%
EPSS
No
On KEV
Description
A WebExtension can request access to local files without the warning prompt stating that the extension will "Access your data for all websites" being displayed to the user. This allows extensions to run content scripts in local pages without permission warnings when a local file is opened. This vulnerability affects Firefox ESR < 60.3 and Firefox < 63.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 63 · source: vendor, NVD
FE
Firefox ESR · Mozilla
before 60.3 · source: vendor
DL
Debian Linux · Debian
8.0; 9.0 · source: NVD
EL
Enterprise Linux Desktop · Redhat
6.0; 7.0 · source: NVD
EL
Enterprise Linux Server · Redhat
6.0; 7.0 · source: NVD
EL
Enterprise Linux Server Eus · Redhat
7.5 · source: NVD
EL
Enterprise Linux Workstation · Redhat
6.0; 7.0 · source: NVD
UL
Ubuntu Linux · Canonical
14.04; 16.04; 18.04; 18.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-12397
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-12397
Third Party Advisory
http://www.securityfocus.com/bid/105718
Third Party Advisory
http://www.securitytracker.com/id/1041944
Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3005
Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3006
Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1487478
Mailing List
https://lists.debian.org/debian-lts-announce/2018/11/msg00008.html
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