Advisory Details

May 15th, 2019

Microsoft Chakra Exception Handling Type Confusion Remote Code Execution Vulnerability

ZDI-19-469
ZDI-CAN-8370

CVE ID CVE-2019-0937
CVSS SCORE 8.8, (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Chakra
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Chakra. 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 the handling of exceptions in JavaScript. By performing actions in JavaScript, an attacker can trigger a type confusion condition. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0937
DISCLOSURE TIMELINE
  • 2019-05-15 - Vulnerability reported to vendor
  • 2019-05-15 - Coordinated public release of advisory
CREDIT fluoroacetate (@fluoroacetate)
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