CVE-2018-8251 — Media Foundation Memory Corruption Vulnerability

Executive Summary

A memory corruption vulnerability exists when Windows Media Foundation improperly handles objects in memory. An attacker who successfully exploited the vulnerability could install programs; view, change, or delete data; or create new accounts with full user rights. There are multiple ways an attacker could exploit the vulnerability, such as by convincing a user to open a specially crafted document, or by convincing a user to visit a malicious webpage. The security update addresses the vulnerability by correcting how Windows Media Foundation handles objects in memory.

Overview

4.2

CVSS MEDIUM

Critical

MS Severity

Not Exploited

MS Exploit Status

More 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

Required

SCOPE

Unchanged

CONFIDENTIALITY

Low

INTEGRITY

Low

AVAILABILITY

None

EXPLOIT CODE MATURITY

Proof-of-Concept

REMEDIATION LEVEL

Official Fix

REPORT CONFIDENCE

Confirmed

Temporal Score: 3.8

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 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 7 for 32-bit Systems Service Pack 1 4284826 (Monthly Rollup) 4284867 (Security Only) Critical Remote Code Execution 4103718 Base: 4.2 Temporal: 3.8 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C Yes None Windows 7 for x64-based Systems Service Pack 1 4284826 (Monthly Rollup) 4284867 (Security Only) Critical Remote Code Execution 4103718 Base: 4.2 Temporal: 3.8 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C Yes None Windows 8.1 for 32-bit systems 4284815 (Monthly Rollup) 4284878 (Security Only) Critical Remote Code Execution 4103725 Base: 4.2 Temporal: 3.8 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C Yes None Windows 8.1 for x64-based systems 4284815 (Monthly Rollup) 4284878 (Security Only) Critical Remote Code Execution 4103725 Base: 4.2 Temporal: 3.8 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C Yes None Windows RT 8.1	`4284815 (Monthly Rollup)`	Critical	Remote Code Execution	Yes
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 4284826 (Monthly Rollup) 4284867 (Security Only) Critical Remote Code Execution 4103718 Base: 4.2 Temporal: 3.8 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 4284826 (Monthly Rollup) 4284867 (Security Only) Critical Remote Code Execution 4103718 Base: 4.2 Temporal: 3.8 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 4284826 (Monthly Rollup) 4284867 (Security Only) Critical Remote Code Execution 4103718 Base: 4.2 Temporal: 3.8 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C Yes None Windows Server 2012 4284855 (Monthly Rollup) 4284846 (Security Only) Critical Remote Code Execution 4103730 Base: 4.2 Temporal: 3.8 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C Yes None Windows Server 2012 (Server Core installation) 4284855 (Monthly Rollup) 4284846 (Security Only) Critical Remote Code Execution 4103730 Base: 4.2 Temporal: 3.8 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C Yes None Windows Server 2012 R2 4284815 (Monthly Rollup) 4284878 (Security Only) Critical Remote Code Execution 4103725 Base: 4.2 Temporal: 3.8 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C Yes None Windows Server 2012 R2 (Server Core installation) 4284815 (Monthly Rollup) 4284878 (Security Only) Critical Remote Code Execution 4103725 Base: 4.2 Temporal: 3.8 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C Yes None 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

6 patches

Article	Type	Restart
`4284860`	Security Update	Yes
`4284880`	Security Update	Yes
`4284874`	Security Update	Yes
`4284819`	Security Update	Yes
`4284835`	Security Update	Yes
`4284815`	Monthly Rollup	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

akayn working with Trend Micro's Zero Day Initiative
Jonathan Downing ( @0xKondara
Anonymous working with Trend Micro's Zero Day Initiative

References

MSRC Advisory MITRE NVD