Out-of-bounds write in Windows and Windows Server - CVE-2018-8423
Published: September 21, 2018 / Updated: October 14, 2018
Vulnerability identifier: #VU14818
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2018-8423
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Windows
Windows Server
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise affected system.
The vulnerability exists due to a boundary error within the Microsoft Jet database engine when processing indexes in database files. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds write and execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
How to mitigate CVE-2018-8423
Microsoft has issued security patch to address this vulnerability on October 9. However patch was insufficient and did not cover all available attack vectors. The vulnerability remains unpatched.