Race Condition Affecting mozilla package, versions [,68.1.0)(68.1.0,69.0)


Severity

Recommended
0.0
high
0
10

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

Threat Intelligence

EPSS
0.08% (36th percentile)

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  • Snyk IDSNYK-UNMANAGED-MOZILLA-2377948
  • published26 Jan 2022
  • disclosed27 Sept 2019
  • creditUnknown

Introduced: 27 Sep 2019

CVE-2019-11736  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade mozilla to version 68.1.0, 69.0 or higher.

Overview

Affected versions of this package are vulnerable to Race Condition. The Mozilla Maintenance Service does not guard against files being hardlinked to another file in the updates directory, allowing for the replacement of local files, including the Maintenance Service executable, which is run with privileged access. Additionally, there was a race condition during checks for junctions and symbolic links by the Maintenance Service, allowing for potential local file and directory manipulation to be undetected in some circumstances. This allows for potential privilege escalation by a user with unprivileged local access.
Note: These attacks requires local system access and only affects Windows. Other operating systems are not affected.. This vulnerability affects Firefox < 69 and Firefox ESR < 68.1.

CVSS Scores

version 3.1