Microsoft Windows
CVE-2018-8225 — Windows DNSAPI Remote Code Execution Vulnerability
Executive Summary
A remote code execution vulnerability exists in Windows Domain Name System (DNS) DNSAPI.dll when it fails to properly handle DNS responses. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the Local System Account. To exploit the vulnerability, the attacker would use a malicious DNS server to send corrupted DNS responses to the target. The update addresses the vulnerability by modifying how Windows DNSAPI.dll handles DNS responses.
Overview
8.1
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Network
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.3
EPSS Score
No EPSS score available for this CVE.
View on FIRST.orgAffected Products
20 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 7 for 32-bit Systems Service Pack 1 4284826 (Monthly Rollup) 4284867 (Security Only) Critical Remote Code Execution 4103718 Base: 8.1 Temporal: 7.3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/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: 8.1 Temporal: 7.3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/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: 8.1 Temporal: 7.3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/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: 8.1 Temporal: 7.3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows RT 8.1 | 4284815 (Monthly Rollup) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | 4230467 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | 4230467 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 for Itanium-Based Systems Service Pack 2 | 4230467 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 for x64-based Systems Service Pack 2 | 4230467 (Security Update) |
Critical | Remote Code Execution | Yes |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | 4230467 (Security Update) |
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: 8.1 Temporal: 7.3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/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: 8.1 Temporal: 7.3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/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: 8.1 Temporal: 7.3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2012 4284855 (Monthly Rollup) 4284846 (Security Only) Critical Remote Code Execution 4103730 Base: 8.1 Temporal: 7.3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/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: 8.1 Temporal: 7.3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C Yes None Windows Server 2012 R2 4284815 (Monthly Rollup) 4284878 (Security Only) Critical Remote Code Execution 4103725 Base: 8.1 Temporal: 7.3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/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: 8.1 Temporal: 7.3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/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
7 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 |
4230467 |
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
Nick Freeman
References
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