Advisory Details

December 13th, 2018

Microsoft Chakra JavaScript Array Type Confusion Remote Code Execution Vulnerability

ZDI-18-1407
ZDI-CAN-7552

CVE ID CVE-2018-8618
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 processing of arrays 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-2018-8618
DISCLOSURE TIMELINE
  • 2018-11-14 - Vulnerability reported to vendor
  • 2018-12-13 - Coordinated public release of advisory
CREDIT Anonymous
BACK TO ADVISORIES