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Improper Input Validation Affecting firefox-esr package, versions <52.2.0esr-1

0.0
medium

Snyk CVSS

    Attack Complexity Low

    Threat Intelligence

    EPSS 0.31% (70th percentile)
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NVD
5.3 medium
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Red Hat
5.3 medium

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  • Snyk ID SNYK-DEBIAN12-FIREFOXESR-1546004
  • published 11 Jun 2018
  • disclosed 11 Jun 2018
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Introduced: 11 Jun 2018

CVE-2017-7764 Open this link in a new tab
CWE-20 Open this link in a new tab

How to fix?

Upgrade Debian:12 firefox-esr to version 52.2.0esr-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:12 relevant fixed versions and status.

Characters from the "Canadian Syllabics" unicode block can be mixed with characters from other unicode blocks in the addressbar instead of being rendered as their raw "punycode" form, allowing for domain name spoofing attacks through character confusion. The current Unicode standard allows characters from "Aspirational Use Scripts" such as Canadian Syllabics to be mixed with Latin characters in the "moderately restrictive" IDN profile. We have changed Firefox behavior to match the upcoming Unicode version 10.0 which removes this category and treats them as "Limited Use Scripts.". This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.