CVE-2018-8231

HTTP Protocol Stack Remote Code Execution Vulnerability

CVE-2018-8231 is fixed in 14 products on 1 platform, first by KB4284880, released June 12, 2018. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent
CVSS
8.1
Critical
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.1698
97th percentile

<p>A remote code execution vulnerability exists when HTTP Protocol Stack (Http.sys) improperly handles objects in memory. An attacker who successfully exploited this vulnerability could execute arbitrary code and take control of the affected system.</p> <p>To exploit the vulnerability, in most situations, an unauthenticated attacker could send a specially crafted packet to a targeted Http.sys server.</p> <p>The security update fixes this vulnerability by correcting how HTTP Protocol Stack(Http.sys) handles objects in memory.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Windows 10 Version 1607 for 32-bit Systems 14393.2312 KB4284880 Jun 12, 2018
Windows 10 Version 1607 for x64-based Systems 14393.2312 KB4284880 Jun 12, 2018
Windows 10 Version 1703 for 32-bit Systems 15063.1155 KB4284874 Jun 12, 2018
Windows 10 Version 1703 for x64-based Systems 15063.1155 KB4284874 Jun 12, 2018
Windows 10 Version 1709 for 32-bit Systems 16299.492 KB4284819 Jun 12, 2018
Windows 10 Version 1709 for x64-based Systems 16299.492 KB4284819 Jun 12, 2018
Windows 10 Version 1803 for 32-bit Systems 17134.112 KB4284835 Jun 12, 2018
Windows 10 Version 1803 for x64-based Systems 17134.112 KB4284835 Jun 12, 2018
Windows 10 for 32-bit Systems 10240.17889 KB4284860 Jun 12, 2018
Windows 10 for x64-based Systems 10240.17889 KB4284860 Jun 12, 2018
Windows Server 2016 14393.2312 KB4284880 Jun 12, 2018
Windows Server 2016 (Server Core installation) 14393.2312 KB4284880 Jun 12, 2018
Windows Server, version 1709 (Server Core Installation) 16299.492 KB4284819 Jun 12, 2018
Windows Server, version 1803 (Server Core Installation) 17134.112 KB4284835 Jun 12, 2018