Advisory Details

November 20th, 2018

Microsoft Edge Chakra Engine Type Confusion Remote Code Execution Vulnerability

ZDI-18-1350
ZDI-CAN-7409

CVE ID CVE-2018-8588
CVSS SCORE 7.5, AV:N/AC:H/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 floating-point arrays in JIT code. 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-2018-8588
DISCLOSURE TIMELINE
  • 2018-10-26 - Vulnerability reported to vendor
  • 2018-11-20 - Coordinated public release of advisory
  • 2019-02-04 - Advisory Updated
CREDIT Anonymous
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