CVE-2018-12379
7.8
HIGH
CVSS 3.1
EPSS 0.10%
Description
When the Mozilla Updater opens a MAR format file which contains a very long item filename, an out-of-bounds write can be triggered, leading to a potentially exploitable crash. This requires running the Mozilla Updater manually on the local system with the malicious MAR file in order to occur. This vulnerability affects Firefox < 62, Firefox ESR < 60.2, and Thunderbird < 60.2.1.
How to fix CVE-2018-12379
To remediate CVE-2018-12379, upgrade the affected package to a fixed version below.
- —upgrade to 60.2.0esr-1 or later
- —upgrade to 1:60.2.1-1 or later
Is CVE-2018-12379 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 60.2.0esr-1
- from 0, < 1:60.2.1-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |