Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2018-12379

7.8 · HIGH

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.

Published Oct 18, 2018CWE-787EPSS 0.39%

Overview

CVE-2018-12379 is a high-severity vulnerability. It was published on October 18, 2018 and has a CVSS 3.0 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.securityfocus.com/bid/105280Refwww.securitytracker.com/id/1041610Refaccess.redhat.com/errata/RHSA-2018:2692Refaccess.redhat.com/errata/RHSA-2018:2693Refaccess.redhat.com/errata/RHSA-2018:3403Refaccess.redhat.com/errata/RHSA-2018:3458Refbugzilla.mozilla.org/show_bug.cgi?id=1473113Reflists.debian.org/debian-lts-announce/2018/11/msg00011.htmlRefsecurity.gentoo.org/glsa/201810-01Refsecurity.gentoo.org/glsa/201811-13

How CyberStrike helps

Frequently asked questions

What is CVE-2018-12379?

CVE-2018-12379 is a high-severity vulnerability. It was published on October 18, 2018 and has a CVSS 3.0 base score of 7.8 (HIGH).

How severe is CVE-2018-12379?

This vulnerability has a CVSS 3.0 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2018-12379?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-12379?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-12379 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related HIGH CVEs from 2018

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999