Advisory Details

June 12th, 2024

(Pwn2Own) Mozilla Firefox Exposed Dangerous Function Sandbox Escape Vulnerability

ZDI-24-665
ZDI-CAN-23848

CVE ID CVE-2024-29944
CVSS SCORE 7.8, AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS Mozilla
AFFECTED PRODUCTS Firefox
VULNERABILITY DETAILS

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.

ADDITIONAL DETAILS Mozilla has issued an update to correct this vulnerability. More details can be found at:
https://www.mozilla.org/en-US/security/advisories/mfsa2024-15/#CVE-2024-29944
DISCLOSURE TIMELINE
  • 2024-04-24 - Vulnerability reported to vendor
  • 2024-06-12 - Coordinated public release of advisory
  • 2024-08-15 - Advisory Updated
CREDIT Manfred Paul (@_manfp)
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