User Impersonation Affecting mozilla package, versions [,78.9)(78.9,87.0)


Severity

Recommended
0.0
medium
0
10

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

Threat Intelligence

EPSS
0.14% (51st percentile)

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  • Snyk IDSNYK-UNMANAGED-MOZILLA-2378252
  • published26 Jan 2022
  • disclosed31 Mar 2021
  • creditUnknown

Introduced: 31 Mar 2021

CVE-2021-23984  (opens in a new tab)
CWE-290  (opens in a new tab)

How to fix?

Upgrade mozilla to version 78.9, 87.0 or higher.

Overview

Affected versions of this package are vulnerable to User Impersonation. A malicious extension could have opened a popup window lacking an address bar. The title of the popup lacking an address bar should not be fully controllable, but in this situation was. This could have been used to spoof a website and attempt to trick the user into providing credentials. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.

CVSS Scores

version 3.1