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Cross-site Scripting (XSS) Affecting thunderbird package, versions <1:68.2.1-1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Scope Changed

    Threat Intelligence

    EPSS 0.16% (52nd percentile)
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NVD
6.1 medium
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Red Hat
6.1 medium
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SUSE
6.1 medium

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  • Snyk ID SNYK-DEBIANUNSTABLE-THUNDERBIRD-474390
  • published 22 Oct 2019
  • disclosed 8 Jan 2020
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Introduced: 22 Oct 2019

CVE-2019-11763 Open this link in a new tab
CWE-79 Open this link in a new tab

How to fix?

Upgrade Debian:unstable thunderbird to version 1:68.2.1-1 or higher.

NVD Description

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

Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filters - enabling the use of entities to mask the actual characters of interest from filters. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.