// For flags

CVE-2023-5728

Mozilla: Improper object tracking during GC in the JavaScript engine could have led to a crash.

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

During garbage collection extra operations were performed on a object that should not be. This could have led to a potentially exploitable crash. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.

Durante la recolección de la "basura" se realizaron operaciones adicionales en un objeto que no debería realizarse. Esto podría haber provocado un fallo potencialmente explotable. Esta vulnerabilidad afecta a Firefox &lt; 119, Firefox ESR &lt; 115.4 y Thunderbird &lt; 115.4.1.

The Mozilla Foundation Security Advisory describes this flaw as: During garbage collection extra operations were performed on a object that should not be. This could have led to a potentially exploitable crash.

This update for MozillaFirefox fixes the following issues. Updated to version 115.4.0 ESR. Fixed a potential clickjack via queued up rendering. Fixed a cross-Origin size and header leakage. Fixed unexpected errors when handling invalid cookie characters. Fixed a crash due to a large WebGL draw. Fixed an issue where WebExtensions could open arbitrary URLs. Fixed an issue where fullscreen notifications would be obscured by file the open dialog on macOS. Fixed a download protection bypass on on Windows. Fixed a crash caused by improper object tracking during GC in the JavaScript engine. Fixed an issue where fullscreen notifications would be obscured by WebAuthn prompts. Fixed multiple memory safety issues. Fixed multiple memory safety issues.

*Credits: anbu
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2023-10-23 CVE Reserved
  • 2023-10-24 CVE Published
  • 2025-02-13 CVE Updated
  • 2025-06-22 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-401: Missing Release of Memory after Effective Lifetime
  • CWE-416: Use After Free
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Mozilla
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 Firefox
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 < 119.0
Search vendor "Mozilla" for product "Firefox" and version " < 119.0"
-
Affected
Mozilla
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 Firefox Esr
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 < 115.4
Search vendor "Mozilla" for product "Firefox Esr" and version " < 115.4"
-
Affected
Mozilla
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 Thunderbird
Search vendor "Mozilla" for product "Thunderbird"
 < 115.4.1
Search vendor "Mozilla" for product "Thunderbird" and version " < 115.4.1"
-
Affected
Debian
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 Debian Linux
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 10.0
Search vendor "Debian" for product "Debian Linux" and version "10.0"
-
Affected
Debian
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 Debian Linux
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 11.0
Search vendor "Debian" for product "Debian Linux" and version "11.0"
-
Affected