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.
Published: 2018-10-18
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-1575-1 thunderbird security update
Debian DSA Debian DSA DSA-4327-1 thunderbird security update
EUVD EUVD EUVD-2018-4353 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.
History

Tue, 25 Nov 2025 18:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Vendors & Products Mozilla firefox Esr

Subscriptions

Debian Debian Linux
Mozilla Firefox Thunderbird
Redhat Enterprise Linux Enterprise Linux Desktop Enterprise Linux Server Enterprise Linux Server Aus Enterprise Linux Server Eus Enterprise Linux Server Tus Enterprise Linux Workstation
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2024-08-05T08:30:59.942Z

Reserved: 2018-06-14T00:00:00.000Z

Link: CVE-2018-12379

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-10-18T13:29:05.307

Modified: 2025-11-25T17:50:16.803

Link: CVE-2018-12379

cve-icon Redhat

Severity : Moderate

Publid Date: 2018-09-05T00:00:00Z

Links: CVE-2018-12379 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses