Out-of-bounds Write Affecting firefox-esr package, versions <60.2.0esr-1


low

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.06% (27th percentile)
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NVD
7.8 high
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SUSE
6.1 medium
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Red Hat
7.8 high

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  • Snyk ID SNYK-DEBIANUNSTABLE-FIREFOXESR-354334
  • published 25 Sep 2018
  • disclosed 18 Oct 2018

How to fix?

Upgrade Debian:unstable firefox-esr to version 60.2.0esr-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox-esr package and not the firefox-esr package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.