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Improper Check for Unusual or Exceptional Conditions Affecting firefox package, versions <79.0-1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Integrity High

    Threat Intelligence

    EPSS 0.32% (70th percentile)
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NVD
6.5 medium
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SUSE
2.5 low
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Red Hat
6.5 medium

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  • Snyk ID SNYK-DEBIANUNSTABLE-FIREFOX-595848
  • published 29 Jul 2020
  • disclosed 10 Aug 2020
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Introduced: 29 Jul 2020

CVE-2020-15658 Open this link in a new tab
CWE-754 Open this link in a new tab

How to fix?

Upgrade Debian:unstable firefox to version 79.0-1 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.

The code for downloading files did not properly take care of special characters, which led to an attacker being able to cut off the file ending at an earlier position, leading to a different file type being downloaded than shown in the dialog. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.