Microsoft Windows Bitmap Parsing Out-Of-Bounds Read Information Disclosure Vulnerability
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 handling of bitmap image data in graphics files. The issue results from the lack of proper validation of user-supplied data, which can result in a read outside an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary 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-2017-8676
Disclosure Timeline
- 2017-05-04 - Vulnerability reported to vendor
- 2017-09-12 - Coordinated public release of advisory
Credit
bear13oy of CloverSec Labs
