Advisory Details

May 15th, 2019

Microsoft Windows ole32 BMP Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-19-473
ZDI-CAN-7969

CVE ID CVE-2019-0885
CVSS SCORE 7.0, AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Windows
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code 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 BMP files in ole32.dll. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. 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-2019-0885
DISCLOSURE TIMELINE
  • 2019-02-28 - Vulnerability reported to vendor
  • 2019-05-15 - Coordinated public release of advisory
CREDIT Anonymous
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