Advisory Details

May 15th, 2019

Microsoft Windows gdiplus EMF Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

ZDI-19-472
ZDI-CAN-8173

CVE ID CVE-2019-0961
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 installations 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 the parsing of EMF files in the gdiplus library. 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 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-2019-0961
DISCLOSURE TIMELINE
  • 2019-02-21 - Vulnerability reported to vendor
  • 2019-05-15 - Coordinated public release of advisory
CREDIT Kamlapati Choubey of Trend Micro Security Research
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