Out-of-bounds Write Affecting Firefox package, versions [,118)


Severity

Recommended
0.0
medium
0
10

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

Threat Intelligence

Exploit Maturity
Not Defined
EPSS
0.08% (37th percentile)

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  • Snyk IDSNYK-UNMANAGED-FIREFOX-5924330
  • published28 Sept 2023
  • disclosed27 Sept 2023
  • creditRonald Crane

Introduced: 27 Sep 2023

CVE-2023-5173  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Firefox to version 118 or higher.

Overview

Affected versions of this package are vulnerable to Out-of-bounds Write in a non-standard configuration of Firefox, an integer overflow could occur based on network traffic, potentially influenced by a local unprivileged webpage, leading to an out-of-bounds write to privileged process memory. An attacker can manipulate network traffic to cause an integer overflow, leading to unauthorised memory write access.

Note: This is only exploitable if a non-standard preference allowing non-HTTPS Alternate Services network.http.altsvc.oe is enabled.

CVSS Scores

version 3.1