CVE-2018-8435
published 2018-09-13CVE-2018-8435: A security feature bypass vulnerability exists when Windows Hyper-V BIOS loader fails to provide a high-entropy source, aka "Windows Hyper-V Security Feature…
PriorityP418medium4.2CVSS 3.0
AVAACHPRHUINSUCNIHAN
EPSS
1.36%
68.7th percentile
A security feature bypass vulnerability exists when Windows Hyper-V BIOS loader fails to provide a high-entropy source, aka "Windows Hyper-V Security Feature Bypass Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers.
Affected
22 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10_servers | — | — |
| microsoft | windows_10_servers | — | — |
| microsoft | windows_server_2016 | — | — |
| microsoft | windows_server_2016 | — | — |
| microsoft | windows_server_2016 | — | — |
| msrc | windows_10_for_x64-based_systems | — | — |
| msrc | windows_10_version_1607_for_x64-based_systems | — | — |
| msrc | windows_10_version_1703_for_x64-based_systems | — | — |
| msrc | windows_10_version_1709_for_x64-based_systems | — | — |
| msrc | windows_10_version_1803_for_x64-based_systems | — | — |
| msrc | windows_server_2016 | — | — |
| msrc | windows_server_version_1709 | — | — |
| msrc | windows_server_version_1803 | — | — |
CVSS provenance
nvdv3.04.2MEDIUMCVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N
nvdv2.02.3LOWAV:A/AC:M/Au:S/C:N/I:P/A:N
vendor_msrc4.2MEDIUM
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GHSA
GHSA-qrgc-h67x-rj3x: A security feature bypass vulnerability exists when Windows Hyper-V BIOS loader fails to provide a high-entropy source, aka "Windows Hyper-V Security
ghsa_unreviewed·2022-05-13
CVE-2018-8435 [MEDIUM] CWE-331 GHSA-qrgc-h67x-rj3x: A security feature bypass vulnerability exists when Windows Hyper-V BIOS loader fails to provide a high-entropy source, aka "Windows Hyper-V Security
A security feature bypass vulnerability exists when Windows Hyper-V BIOS loader fails to provide a high-entropy source, aka "Windows Hyper-V Security Feature Bypass Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers.
Microsoft
Windows Hyper-V Security Feature Bypass Vulnerability
vendor_msrc·2018-09-11·CVSS 4.2
CVE-2018-8435 [MEDIUM] Windows Hyper-V Security Feature Bypass Vulnerability
Windows Hyper-V Security Feature Bypass Vulnerability
Description: A security feature bypass vulnerability exists when Windows Hyper-V BIOS loader fails to provide a high-entropy source.
To exploit this vulnerability, an attacker would need to reboot a guest virtual machine numerous times until the vulnerability is triggered.
The security update addresses the vulnerability by correcting security feature behavior to ensure Windows Hyper-V BIOS loader provides a high-entropy source.
Windows Hyper-V: Windows Hyper-V
Issuing CNA: Microsoft
Impact: Security Feature Bypass
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely;DOS:N/A
Reference: https://catalog.update.microsoft.com/v7/site/Search.a
No detection rules found.
No public exploits indexed.
Talos
Microsoft Patch Tuesday - September 2018
blogs_talos·2018-09-11·CVSS 8.4
[HIGH] Microsoft Patch Tuesday - September 2018
Microsoft released its monthly set of security updates today for a variety of its products that address a variety of bugs. The latest Patch Tuesday covers 61 vulnerabilities, 17 of which are rated "critical," 43 that are rated "important" and one that is considered to have "moderate" severity.
The advisories cover bugs in the Internet Explorer web browser, Jet Database Engine and the Chakra scripting engine, among other products and software.
This update also includes two critical advisories, one of which covers security updates to Adobe Flash, and another that deals with a denial-of-service vulnerability in the Microsoft Windows operating system.
## Critical vulnerabilitiesMicrosoft released coverage for 17 critical bugs. Cisco Talos believes 16 of these are of special importance and n
Talos
Microsoft Patch Tuesday - September 2018
blogs_talos·2018-09-11·CVSS 8.4
[HIGH] Microsoft Patch Tuesday - September 2018
## Microsoft Patch Tuesday - September 2018
Microsoft released its monthly set of security updates today for a variety of its products that address a variety of bugs. The latest Patch Tuesday covers 61 vulnerabilities, 17 of which are rated "critical," 43 that are rated "important" and one that is considered to have "moderate" severity.
The advisories cover bugs in the Internet Explorer web browser, Jet Database Engine and the Chakra scripting engine, among other products and software.
This update also includes two critical advisories, one of which covers security updates to Adobe Flash, and another that deals with a denial-of-service vulnerability in the Microsoft Windows operating system.
## Critical vulnerabilities Microsoft released coverage for 17 critical bugs. Cisco Talos believ
http://www.securityfocus.com/bid/105240http://www.securitytracker.com/id/1041624https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8435http://www.securityfocus.com/bid/105240http://www.securitytracker.com/id/1041624https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8435
2018-09-13
Published