Information Exposure Affecting mozilla package, versions [,78.10.1)(78.10.1,87.0)


Severity

Recommended
0.0
medium
0
10

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

Threat Intelligence

EPSS
0.27% (68th percentile)

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  • Snyk IDSNYK-UNMANAGED-MOZILLA-2377901
  • published26 Jan 2022
  • disclosed24 Jun 2021
  • creditUnknown

Introduced: 24 Jun 2021

CVE-2021-29951  (opens in a new tab)
CWE-732  (opens in a new tab)

How to fix?

Upgrade mozilla to version 78.10.1, 87.0 or higher.

Overview

Affected versions of this package are vulnerable to Information Exposure. The Mozilla Maintenance Service granted SERVICE_START access to BUILTIN|Users which, in a domain network, grants normal remote users access to start or stop the service. This could be used to prevent the browser update service from operating (if an attacker spammed the 'Stop' command); but also exposed attack surface in the maintenance service. Note: This issue only affected Windows operating systems older than Win 10 build 1709. Other operating systems are unaffected.. This vulnerability affects Thunderbird < 78.10.1, Firefox < 87, and Firefox ESR < 78.10.1.

CVSS Scores

version 3.1