Advisory Details

July 10th, 2019

Microsoft Windows gdiplus ConvertToEMFPlus Out-Of-Bounds Read Information Disclosure Vulnerability

ZDI-19-652
ZDI-CAN-8197

CVE ID CVE-2019-1094
CVSS SCORE 3.3, AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Windows
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on vulnerable instances of Microsoft Windows. 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 building an EMFPlus object while parsing a PPTX file. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the 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-2019-1094
DISCLOSURE TIMELINE
  • 2019-04-03 - Vulnerability reported to vendor
  • 2019-07-10 - Coordinated public release of advisory
CREDIT willJ
BACK TO ADVISORIES