CVE-2018-8231 — HTTP Protocol Stack Remote Code Execution Vulnerability

Executive Summary

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. To exploit the vulnerability, in most situations, an unauthenticated attacker could send a specially crafted packet to a targeted Http.sys server. The security update fixes this vulnerability by correcting how HTTP Protocol Stack(Http.sys) handles objects in memory.

Overview

8.1

CVSS HIGH

Critical

MS Severity

Not Exploited

MS Exploit Status

Less Likely

MS Exploit Likelihood

Category Remote Code Execution

Released Jun 12 2018

Last Updated Jun 12 2018

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

CVSS Vector

ATTACK VECTOR

Network

ATTACK COMPLEXITY

High

PRIVILEGES REQUIRED

None

USER INTERACTION

None

SCOPE

Unchanged

CONFIDENTIALITY

High

INTEGRITY

High

AVAILABILITY

High

REMEDIATION LEVEL

Official Fix

REPORT CONFIDENCE

Confirmed

Temporal Score: 7.7

EPSS Score

No EPSS score available for this CVE.

View on FIRST.org

Affected Products

14 affected products

Product	KB Article	Severity	Impact	Restart Required
Windows 10 for 32-bit Systems	`4284860 (Security Update)`	Critical	Remote Code Execution	Yes
Windows 10 for x64-based Systems	`4284860 (Security Update)`	Critical	Remote Code Execution	Yes
Windows 10 Version 1607 for 32-bit Systems	`4284880 (Security Update)`	Critical	Remote Code Execution	Yes
Windows 10 Version 1607 for x64-based Systems	`4284880 (Security Update)`	Critical	Remote Code Execution	Yes
Windows 10 Version 1703 for 32-bit Systems	`4284874 (Security Update)`	Critical	Remote Code Execution	Yes
Windows 10 Version 1703 for x64-based Systems	`4284874 (Security Update)`	Critical	Remote Code Execution	Yes
Windows 10 Version 1709 for 32-bit Systems	`4284819 (Security Update)`	Critical	Remote Code Execution	Yes
Windows 10 Version 1709 for x64-based Systems	`4284819 (Security Update)`	Critical	Remote Code Execution	Yes
Windows 10 Version 1803 for 32-bit Systems	`4284835 (Security Update)`	Critical	Remote Code Execution	Yes
Windows 10 Version 1803 for x64-based Systems	`4284835 (Security Update)`	Critical	Remote Code Execution	Yes
Windows Server 2016	`4284880 (Security Update)`	Critical	Remote Code Execution	Yes
Windows Server 2016 (Server Core installation)	`4284880 (Security Update)`	Critical	Remote Code Execution	Yes
Windows Server, version 1709 (Server Core Installation)	`4284819 (Security Update)`	Critical	Remote Code Execution	Yes
Windows Server, version 1803 (Server Core Installation)	`4284835 (Security Update)`	Critical	Remote Code Execution	Yes

Patches

5 patches

Article	Type	Restart
`4284860`	Security Update	Yes
`4284880`	Security Update	Yes
`4284874`	Security Update	Yes
`4284819`	Security Update	Yes
`4284835`	Security Update	Yes

Known Exploits

No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.

Acknowledgments

None

References

MSRC Advisory MITRE NVD