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Out-of-Bounds Affecting firefox package, versions <66.0+build3-0ubuntu1

Severity

 Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.3% (70th percentile)

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  • Snyk IDSNYK-UBUNTU2104-FIREFOX-1262301
  • published20 Mar 2019
  • disclosed26 Apr 2019
Report a new vulnerability Found a mistake?

Introduced: 20 Mar 2019

CVE-2019-9793  (opens in a new tab)
CWE-119  (opens in a new tab)

How to fix?

Upgrade Ubuntu:21.04 firefox to version 66.0+build3-0ubuntu1 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 Ubuntu. See How to fix? for Ubuntu:21.04 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.