Arbitrary Code Injection 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
0.27% (68th percentile)

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  • Snyk IDSNYK-UNMANAGED-MOZILLA-2378548
  • published26 Jan 2022
  • disclosed24 Jun 2021
  • creditUnknown

Introduced: 24 Jun 2021

CVE-2021-29955  (opens in a new tab)
CWE-74  (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 Arbitrary Code Injection. A transient execution vulnerability, named Floating Point Value Injection (FPVI) allowed an attacker to leak arbitrary memory addresses and may have also enabled JIT type confusion attacks. (A related vulnerability, Speculative Code Store Bypass (SCSB), did not affect Firefox.). This vulnerability affects Firefox ESR < 78.9 and Firefox < 87.

CVSS Scores

version 3.1