Use After Free Affecting Firefox-ESR package, versions [,115.5)


Severity

Recommended
0.0
high
0
10

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

Threat Intelligence

EPSS
0.14% (51st percentile)

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  • Snyk IDSNYK-UNMANAGED-FIREFOXESR-6071716
  • published22 Nov 2023
  • disclosed21 Nov 2023
  • creditYangkang

Introduced: 21 Nov 2023

CVE-2023-6207  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Firefox-ESR to version 115.5 or higher.

Overview

Affected versions of this package are vulnerable to Use After Free due to the ReadableByteStreamQueueEntry::Buffer function. An attacker can exploit this vulnerability to execute arbitrary code by triggering a use-after-free condition. This is only exploitable if the attacker can induce a specific state in the ReadableByteStreamQueueEntry::Buffer function.

CVSS Scores

version 3.1