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Race Condition Affecting thunderbird package, versions <1:68.2.1-1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required

    Threat Intelligence

    EPSS 0.3% (70th percentile)
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NVD
5.4 medium
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SUSE
5.4 medium
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Red Hat
5.4 medium

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  • Snyk ID SNYK-DEBIANUNSTABLE-THUNDERBIRD-474384
  • published 22 Oct 2019
  • disclosed 8 Jan 2020
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Introduced: 22 Oct 2019

CVE-2019-11761 Open this link in a new tab
CWE-362 Open this link in a new tab
CWE-862 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.

By using a form with a data URI it was possible to gain access to the privileged JSONView object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.