Race Condition Affecting firefox-esr package, versions <68.2.0esr-1


Severity

Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.3% (71st percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-DEBIANUNSTABLE-FIREFOXESR-474060
  • published22 Oct 2019
  • disclosed8 Jan 2020

Introduced: 22 Oct 2019

CVE-2019-11761  (opens in a new tab)
CWE-362  (opens in a new tab)
CWE-862  (opens in a new tab)

How to fix?

Upgrade Debian:unstable firefox-esr to version 68.2.0esr-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: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.

CVSS Scores

version 3.1