Microsoft Browsers
CVE-2018-8357 — Microsoft Browser Elevation of Privilege Vulnerability
Executive Summary
An elevation of privilege vulnerability exists in Microsoft browsers allowing sandbox escape. An attacker who successfully exploited the vulnerability could use the sandbox escape to elevate privileges on an affected system. This vulnerability by itself does not allow arbitrary code execution; however, it could allow arbitrary code to be run if the attacker uses it in combination with another vulnerability (such as a remote code execution vulnerability or another elevation of privilege vulnerability) that is capable of leveraging the elevated privileges when code execution is attempted.
Overview
7.5
CVSS HIGH
Important
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
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.7
EPSS Score
No EPSS score available for this CVE.
View on FIRST.orgAffected Products
22 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Internet Explorer 11 on Windows 10 for 32-bit Systems | 4343892 (Security Update) |
Important | Elevation of Privilege | Yes |
| Internet Explorer 11 on Windows 10 for x64-based Systems | 4343892 (Security Update) |
Important | Elevation of Privilege | Yes |
| Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems | 4343887 (Security Update) |
Important | Elevation of Privilege | Yes |
| Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems | 4343887 (Security Update) |
Important | Elevation of Privilege | Yes |
| Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems | 4343885 (Security Update) |
Important | Elevation of Privilege | Yes |
| Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems | 4343885 (Security Update) |
Important | Elevation of Privilege | Yes |
| Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems | 4343897 (Security Update) |
Important | Elevation of Privilege | Yes |
| Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems | 4343897 (Security Update) |
Important | Elevation of Privilege | Yes |
| Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems | 4343909 (Security Update) |
Important | Elevation of Privilege | Yes |
| Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems | 4343909 (Security Update) |
Important | Elevation of Privilege | Yes |
| Internet Explorer 11 on Windows Server 2016 | 4343887 (Security Update) |
Low | Elevation of Privilege | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 for 32-bit Systems | 4343892 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 for x64-based Systems | 4343892 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems | 4343887 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems | 4343887 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for 32-bit Systems | 4343885 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems | 4343885 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for 32-bit Systems | 4343897 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for x64-based Systems | 4343897 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems | 4343909 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems | 4343909 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft Edge (EdgeHTML-based) on Windows Server 2016 | 4343887 (Security Update) |
Low | Elevation of Privilege | Yes |
Patches
5 patches
| Article | Type | Restart |
|---|---|---|
4343892 |
Security Update | Yes |
4343887 |
Security Update | Yes |
4343885 |
Security Update | Yes |
4343897 |
Security Update | Yes |
4343909 |
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
Seonung Jang of Stealien
James Lee @Windowsrcer
References
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