Advisory Details

April 15th, 2019

(Pwn2Own) Mozilla Firefox IonMonkey Optimizer Type Confusion Remote Code Execution Vulnerability

CVE ID	CVE-2019-9813
CVSS SCORE	8.8, AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Mozilla
AFFECTED PRODUCTS	Firefox
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Mozilla Firefox. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within IonMonkey. The issue results from the lack of proper validation of user-supplied data, which can result in a type confusion condition. An attacker can leverage this vulnerability to execute code in the context of the current process.
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/mfsa2019-09/#CVE-2019-9813
DISCLOSURE TIMELINE	2019-03-21 - Vulnerability reported to vendor 2019-04-15 - Coordinated public release of advisory 2019-06-14 - Advisory Updated
CREDIT	Niklas Baumstark (@_niklasb)

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