CVE-2020-17136
published 2020-12-10CVE-2020-17136: Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
PriorityP355high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EXPLOIT
EPSS
13.96%
96.2th percentile
Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Affected
33 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_version_1803 | >= 10.0.0 < publication | publication |
| microsoft | windows_10_version_1809 | >= 10.0.0 < publication | publication |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < publication | publication |
| microsoft | windows_10_version_1903_for_32-bit_systems | >= 10.0.0 < publication | publication |
| microsoft | windows_10_version_1903_for_arm64-based_systems | >= 10.0.0 < publication | publication |
| microsoft | windows_10_version_1903_for_x64-based_systems | >= 10.0.0 < publication | publication |
| microsoft | windows_10_version_1909 | >= 10.0.0 < publication | publication |
| microsoft | windows_10_version_2004 | >= 10.0.0 < publication | publication |
| microsoft | windows_10_version_20h2 | >= 10.0.0 < publication | publication |
| microsoft | windows_server_2016 | — | — |
| microsoft | windows_server_2016 | — | — |
| microsoft | windows_server_2016 | — | — |
| microsoft | windows_server_2016 | — | — |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < publication | publication |
| microsoft | windows_server_version_2004 | >= 10.0.0 < publication | publication |
| microsoft | windows_server_version_20h2 | >= 10.0.0 < publication | publication |
| msrc | windows_10_version_1803 | — | — |
| msrc | windows_10_version_1809 | — | — |
| msrc | windows_10_version_1903 | — | — |
Detection & IOCsextracted from sources · hover to see the quote
- →Monitor for file creation events in privileged/protected directories initiated by processes running under a standard user context but attributed to kernel-mode operations (missing IO_FORCE_ACCESS_CHECK / OBJ_FORCE_ACCESS_CHECK flags) via cldflt.sys. ↗
- →Detect DLL hijacking attempts targeting the Microsoft Storage Spaces SMP service — watch for unexpected DLL loads by that service from non-standard or user-writable paths, which would result in code execution as NETWORK SERVICE. ↗
- →Alert on privilege escalation from NETWORK SERVICE to SYSTEM via Named Pipe Impersonation (RPCSS Named Pipe Impersonation), which is the post-exploitation step following successful exploitation of this vulnerability. ↗
- ·Vulnerability affects Windows 10 v1803 and later only up to (but not including) the December 2020 patch cycle. Systems patched with December 2020 updates are not affected. ↗
- ·The Metasploit module is classified as a local exploit, meaning initial access to the target system is a prerequisite for exploitation. ↗
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.04.6MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:P
vendor_msrc7.8HIGH
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GHSA
GHSA-qjcx-cq93-fc22: , aka 'Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability'
ghsa_unreviewed·2022-05-24·CVSS 7.0
CVE-2020-17134 [HIGH] CWE-269 GHSA-qjcx-cq93-fc22: , aka 'Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability'
, aka 'Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-17103, CVE-2020-17136.
GHSA
GHSA-j8pf-3vjv-773q: , aka 'Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability'
ghsa_unreviewed·2022-05-24·CVSS 7.8
CVE-2020-17103 [HIGH] CWE-269 GHSA-j8pf-3vjv-773q: , aka 'Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability'
, aka 'Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-17134, CVE-2020-17136.
GHSA
GHSA-j2p5-2ggv-36cx: , aka 'Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability'
ghsa_unreviewed·2022-05-24·CVSS 7.0
CVE-2020-17136 [HIGH] CWE-269 GHSA-j2p5-2ggv-36cx: , aka 'Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability'
, aka 'Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-17103, CVE-2020-17134.
Project0
Hunting for Bugs in Windows Mini-Filter Drivers - Project Zero
project_zero·2021-01-01·CVSS 7.0
CVE-2018-0877 [HIGH] Hunting for Bugs in Windows Mini-Filter Drivers - Project Zero
Posted by James Forshaw, Project Zero
In December Microsoft fixed 4 issues in Windows in the Cloud Filter and Windows Overlay Filter (WOF) drivers (CVE-2020-17103, CVE-2020-17134, CVE-2020-17136, CVE-2020-17139). These 4 issues were 3 local privilege escalations and a security feature bypass, and they were all present in Windows file system filter drivers. I’ve found a number of issues in filter drivers previously, including 6 in the LUAFV driver which implements UAC file virtualization.
The purpose of a file system filter driver according to Microsoft is:
“A file system filter driver can filter I/O operations for one or more file systems or file system volumes. Depending on the nature of the driver, filter can mean log, observe, modify, or even prevent. Typical applications for file
Microsoft
Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
vendor_msrc·2020-12-08·CVSS 7.8
CVE-2020-17136 [HIGH] Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Microsoft Windows: Microsoft Windows
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Elevation of Privilege
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4592438
Reference: https://support.microsoft.com/help/4592438
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4592446
Reference: https://support.microsoft.com/help/4592446
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4592440
Reference: https://support.microsoft.com/help/4592440
Reference: https://catalog.update.microsoft
No detection rules found.
No writeups or analysis indexed.
2020-12-10
Published