Microsoft Edge Elevation of Privilege Vulnerability
CVE-2017-8503 is fixed in 7 products on 1 platform, first by KB4034660, released August 8, 2017. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.
<p>An elevation of privilege vulnerability exists in Microsoft Edge that could allow an attacker to escape from the AppContainer sandbox in the browser. An attacker who successfully exploited this vulnerability could gain elevated privileges and break out of the Edge AppContainer sandbox.</p> <p>The vulnerability by itself does not allow arbitrary code to run. However, this vulnerability could be used in conjunction with one or more vulnerabilities (for example a remote code execution vulnerability and another elevation of privilege vulnerability) to take advantage of the elevated privileges when running.</p> <p>The security update addresses the vulnerability by modifying how Microsoft Edge handles sandboxing.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1511 for 32-bit Systems | 10586.1045 | KB4034660 | Aug 8, 2017 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1511 for x64-based Systems | 10586.1045 | KB4034660 | Aug 8, 2017 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems | 14393.1593 | KB4034658 | Aug 8, 2017 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems | 14393.1593 | KB4034658 | Aug 8, 2017 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for 32-bit Systems | 15063.540 | KB4034674 | Aug 8, 2017 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems | 15063.540 | KB4034674 | Aug 8, 2017 |
| Microsoft Edge (EdgeHTML-based) on Windows Server 2016 | 14393.1593 | KB4034658 | Aug 8, 2017 |
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