CVE-2018-8449
published 2018-09-13CVE-2018-8449: A security feature bypass exists when Device Guard incorrectly validates an untrusted file, aka "Device Guard Security Feature Bypass Vulnerability." This…
PriorityP422low3.3CVSS 3.0
AVLACLPRLUINSUCNILAN
EXPLOIT
EPSS
3.11%
87.7th percentile
A security feature bypass exists when Device Guard incorrectly validates an untrusted file, aka "Device Guard Security Feature Bypass Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers.
Affected
32 ranges· showing 25
| 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 | — | — |
| 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_32-bit_systems | — | — |
| msrc | windows_10_for_x64-based_systems | — | — |
| msrc | windows_10_version_1607_for_32-bit_systems | — | — |
| msrc | windows_10_version_1607_for_x64-based_systems | — | — |
| msrc | windows_10_version_1703_for_32-bit_systems | — | — |
| msrc | windows_10_version_1703_for_x64-based_systems | — | — |
CVSS provenance
nvdv3.03.3LOWCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
nvdv2.02.1LOWAV:L/AC:L/Au:N/C:N/I:P/A:N
vendor_msrc5.3MEDIUM
CVEs like this are exactly what “Exploited This Week” covers.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
GHSA-pf35-ch3j-qpg8: A security feature bypass exists when Device Guard incorrectly validates an untrusted file, aka "Device Guard Security Feature Bypass Vulnerability
ghsa_unreviewed·2022-05-13
CVE-2018-8449 [LOW] CWE-367 GHSA-pf35-ch3j-qpg8: A security feature bypass exists when Device Guard incorrectly validates an untrusted file, aka "Device Guard Security Feature Bypass Vulnerability
A security feature bypass exists when Device Guard incorrectly validates an untrusted file, aka "Device Guard Security Feature Bypass Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers.
Project0
Injecting Code into Windows Protected Processes using COM - Part 1 - Project Zero
project_zero·2018-10-01
CVE-2018-8449 Injecting Code into Windows Protected Processes using COM - Part 1 - Project Zero
Posted by James Forshaw, Google Project Zero
At Recon Montreal 2018 I presented “Unknown Known DLLs and other Code Integrity Trust Violations” with Alex Ionescu. We described the implementation of Microsoft Windows’ Code Integrity mechanisms and how Microsoft implemented Protected Processes (PP). As part of that I demonstrated various ways of bypassing Protected Process Light (PPL), some requiring administrator privileges, others not.
In this blog I’m going to describe the process I went through to discover a way of injecting code into a PPL on Windows 10 1803. As the only issue Microsoft considered to be violating a defended security boundary has now been fixed I can discuss the exploit in more detail.
Background on Windows Protected Processes
The origins of the Windows Protected Pr
Microsoft
Device Guard Security Feature Bypass Vulnerability
vendor_msrc·2018-09-11·CVSS 5.3
CVE-2018-8449 [LOW] Device Guard Security Feature Bypass Vulnerability
Device Guard Security Feature Bypass Vulnerability
Description: A security feature bypass exists when Device Guard incorrectly validates an untrusted file. An attacker who successfully exploited this vulnerability could make an unsigned file appear to be signed. Because Device Guard relies on the signature to determine the file is non-malicious, Device Guard could then allow a malicious file to execute.
In an attack scenario, an attacker could make an untrusted file appear to be a trusted file.
The update addresses the vulnerability by correcting how Device Guard handles untrusted files.
Device Guard: Device Guard
Issuing CNA: Microsoft
Impact: Security Feature Bypass
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation More Likely;Older Software Rel
No detection rules found.
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/105272http://www.securitytracker.com/id/1041642https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8449https://www.exploit-db.com/exploits/45435/http://www.securityfocus.com/bid/105272http://www.securitytracker.com/id/1041642https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8449https://www.exploit-db.com/exploits/45435/
2018-09-13
Published