Improper Access Control Affecting mozilla package, versions [,63.0)


Severity

Recommended
0.0
medium
0
10

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

Threat Intelligence

EPSS
0.31% (70th percentile)

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  • Snyk IDSNYK-UNMANAGED-MOZILLA-2378282
  • published26 Jan 2022
  • disclosed28 Feb 2019
  • creditUnknown

Introduced: 28 Feb 2019

CVE-2018-12402  (opens in a new tab)
CWE-284  (opens in a new tab)

How to fix?

Upgrade mozilla to version 63.0 or higher.

Overview

Affected versions of this package are vulnerable to Improper Access Control. The internal WebBrowserPersist code does not use correct origin context for a resource being saved. This manifests when sub-resources are loaded as part of "Save Page As..." functionality. For example, a malicious page could recover a visitor's Windows username and NTLM hash by including resources otherwise unreachable to the malicious page, if they can convince the visitor to save the complete web page. Similarly, SameSite cookies are sent on cross-origin requests when the "Save Page As..." menu item is selected to save a page, which can result in saving the wrong version of resources based on those cookies. This vulnerability affects Firefox < 63.

CVSS Scores

version 3.1