Out-of-Bounds Affecting firefox package, versions <66.0-1


0.0
medium

Snyk CVSS

    Attack Complexity High
    Integrity High

    Threat Intelligence

    EPSS 0.56% (78th percentile)
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NVD
5.9 medium
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Red Hat
5.9 medium
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SUSE
7.5 high

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  • Snyk ID SNYK-DEBIANUNSTABLE-FIREFOX-340844
  • published 20 Mar 2019
  • disclosed 26 Apr 2019

How to fix?

Upgrade Debian:unstable firefox to version 66.0-1 or higher.

NVD Description

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

A mechanism was discovered that removes some bounds checking for string, array, or typed array accesses if Spectre mitigations have been disabled. This vulnerability could allow an attacker to create an arbitrary value in compiled JavaScript, for which the range analysis will infer a fully controlled, incorrect range in circumstances where users have explicitly disabled Spectre mitigations. Note: Spectre mitigations are currently enabled for all users by default settings.. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.