Open Redirect Affecting mozilla package, versions [,78.8)(78.8,86.0)


Severity

Recommended
0.0
medium
0
10

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

Threat Intelligence

EPSS
0.32% (71st percentile)

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  • Snyk IDSNYK-UNMANAGED-MOZILLA-2378121
  • published26 Jan 2022
  • disclosed26 Feb 2021
  • creditUnknown

Introduced: 26 Feb 2021

CVE-2021-23969  (opens in a new tab)
CWE-601  (opens in a new tab)

How to fix?

Upgrade mozilla to version 78.8, 86.0 or higher.

Overview

Affected versions of this package are vulnerable to Open Redirect. As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL requested by the page, pre-redirects. If that’s not possible, user agents need to strip the URL down to an origin to avoid unintentional leakage." Under certain types of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was fixed to be the redirect destination's origin. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.

CVSS Scores

version 3.1