// For flags

CVE-2024-29944

Mozilla Firefox Exposed Dangerous Function Sandbox Escape Vulnerability

Severity Score

8.4
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

An attacker was able to inject an event handler into a privileged object that would allow arbitrary JavaScript execution in the parent process. Note: This vulnerability affects Desktop Firefox only, it does not affect mobile versions of Firefox. This vulnerability affects Firefox < 124.0.1 and Firefox ESR < 115.9.1.

Un atacante pudo inyectar un controlador de eventos en un objeto privilegiado que permitiría la ejecución arbitraria de JavaScript en el proceso principal. Nota: Esta vulnerabilidad afecta únicamente a Firefox de escritorio, no afecta a las versiones móviles de Firefox. Esta vulnerabilidad afecta a Firefox &lt; 124.0.1 y Firefox ESR &lt; 115.9.1.

The Mozilla Foundation Security Advisory describes this flaw as:

An attacker was able to inject an event handler into a privileged object that would allow arbitrary JavaScript execution in the parent process.

This vulnerability allows remote attackers to escape the sandbox on affected installations of Mozilla Firefox. An attacker must first obtain the ability to execute low-privileged code in the renderer process in order to exploit this vulnerability.
The specific flaw exists within the SessionStore component. The issue results from an exposed dangerous function. An attacker can leverage this vulnerability to escape the sandbox and execute arbitrary code in the context of the current user at medium integrity.

*Credits: Manfred Paul via Trend Micro's Zero Day Initiative
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
None
Automatable
No
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2024-03-21 CVE Reserved
  • 2024-03-22 CVE Published
  • 2024-03-23 EPSS Updated
  • 2024-08-27 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-94: Improper Control of Generation of Code ('Code Injection')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
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