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Out-of-bounds Write Affecting firefox package, versions <75.0-1

0.0
high

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.31% (70th percentile)
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NVD
8.8 high
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SUSE
6.1 medium
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Red Hat
8.8 high

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  • Snyk ID SNYK-DEBIANUNSTABLE-FIREFOX-564613
  • published 7 Apr 2020
  • disclosed 24 Apr 2020
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Introduced: 7 Apr 2020

CVE-2020-6822 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade Debian:unstable firefox to version 75.0-1 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.

On 32-bit builds, an out of bounds write could have occurred when processing an image larger than 4 GB in <code>GMPDecodeData</code>. It is possible that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75.