Access Restriction Bypass Affecting mozilla package, versions [,68.2)(68.2,70.0)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.3% (71st percentile)

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  • Snyk IDSNYK-UNMANAGED-MOZILLA-2378341
  • published26 Jan 2022
  • disclosed8 Jan 2020
  • creditUnknown

Introduced: 8 Jan 2020

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 mozilla to version 68.2, 70.0 or higher.

Overview

Affected versions of this package are vulnerable to Access Restriction Bypass. 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