Remote code execution in Windows VBScript Engine

Published: 2019-08-13 | Updated: 2019-08-13
Severity Medium
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2019-1183
CWE ID CWE-119
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software Windows Subscribe
Windows Server
Vendor Microsoft

Security Advisory

This security advisory describes one medium risk vulnerability.

1) Buffer overflow

Severity: Medium

CVSSv3: 6.7 [CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C] [PCI]

CVE-ID: CVE-2019-1183

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the VBScript engine. A remote attacker can create a specially crafted webpage, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 7, 8.1, 10, 10 1607, 10 1703, 10 1709, 10 1803, 10 1809, 10 1903, RT 8.1

Windows Server: 1803, 1903, 2008, 2008 R2, 2012, 2012 R2, 2016, 2019

CPE External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1183

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.