Microsoft Windows VBScript Array Use-After-Free Remote Code Execution Vulnerability
Vulnerability Details
This vulnerability allows remote attackers to execute arbitrary code on affected 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 the Filter and Join functions in VBScript. By performing actions in VBScript, an attacker can cause a pointer to be reused after it has been freed. 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-2019-1208
Disclosure Timeline
- 2019-06-18 - Vulnerability reported to vendor
- 2019-09-12 - Coordinated public release of advisory
Credit
Elliot Cao working with Trend Micro's Zero Day Initiative
