CVE-2021-43207
published 2021-12-15CVE-2021-43207: Windows Common Log File System Driver Elevation of Privilege Vulnerability
PriorityP183high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
ITWVulnCheck KEVRansomware
Exploited in the wild
EPSS
0.63%
46.2th percentile
Windows Common Log File System Driver Elevation of Privilege Vulnerability
Affected
51 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_1507 | >= 10.0.0 < 10.0.10240.19145 | 10.0.10240.19145 |
| microsoft | windows_10_version_1607 | >= 10.0.0 < 10.0.14393.4825 | 10.0.14393.4825 |
| microsoft | windows_10_version_1809 | >= 10.0.0 < 10.0.17763.2366 | 10.0.17763.2366 |
| microsoft | windows_10_version_1909 | >= 10.0.0 < 10.0.18363.1977 | 10.0.18363.1977 |
| microsoft | windows_10_version_2004 | >= 10.0.0 < 10.0.19041.1415 | 10.0.19041.1415 |
| microsoft | windows_10_version_20h2 | >= 10.0.0 < 10.0.19042.1415 | 10.0.19042.1415 |
| microsoft | windows_10_version_21h1 | >= 10.0.0 < 10.0.19043.1415 | 10.0.19043.1415 |
| microsoft | windows_10_version_21h2 | >= 10.0.0 < 10.0.19044.1415 | 10.0.19044.1415 |
| microsoft | windows_11_version_21h2 | >= 10.0.0 < 10.0.22000.376 | 10.0.22000.376 |
| microsoft | windows_7 | >= 6.1.0 < 6.1.7601.25796 | 6.1.7601.25796 |
| microsoft | windows_7_service_pack_1 | >= 6.1.0 < 6.1.7601.25796 | 6.1.7601.25796 |
| microsoft | windows_8.1 | >= 6.3.0 < 6.3.9600.20207 | 6.3.9600.20207 |
| microsoft | windows_server | — | — |
| microsoft | windows_server | — | — |
| microsoft | windows_server_2008 | — | — |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.0.0 < 6.1.7601.25796 | 6.1.7601.25796 |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.1.0 < 6.1.7601.25796 | 6.1.7601.25796 |
| microsoft | windows_server_2008_service_pack_2 | >= 6.0.0 < 6.0.6003.21309 | 6.0.6003.21309 |
| microsoft | windows_server_2012 | — | — |
Detection & IOCsextracted from sources · hover to see the quote
- ·No active exploitation observed; however, Microsoft rates this as 'Exploitation More Likely' for both latest and older software releases, indicating elevated risk and priority patching is warranted. ↗
- ·Vulnerability is in the Windows Common Log File System (CLFS) Driver, a kernel-mode component. Exploitation would yield local privilege escalation to SYSTEM. No public exploit or in-the-wild exploitation confirmed at time of advisory. ↗
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
vulncheck7.8HIGH
vendor_msrc7.8HIGH
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GHSA
GHSA-w3v4-69ph-pfjp: Windows Common Log File System Driver Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-43226
ghsa_unreviewed·2021-12-16·CVSS 7.8
CVE-2021-43207 [HIGH] CWE-269 GHSA-w3v4-69ph-pfjp: Windows Common Log File System Driver Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-43226
Windows Common Log File System Driver Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-43226.
GHSA
GHSA-98jh-5xvm-p5ph: Windows Common Log File System Driver Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-43207
ghsa_unreviewed·2021-12-16·CVSS 7.8
CVE-2021-43226 [HIGH] CWE-269 GHSA-98jh-5xvm-p5ph: Windows Common Log File System Driver Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-43207
Windows Common Log File System Driver Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-43207.
VulnCheck
Windows Common Log File System Driver Elevation of Privilege Vulnerability
vulncheck·2021·CVSS 7.8
CVE-2021-43207 [HIGH] Windows Common Log File System Driver Elevation of Privilege Vulnerability
Windows Common Log File System Driver Elevation of Privilege Vulnerability
Windows Common Log File System Driver Elevation of Privilege Vulnerability
Affected: Microsoft Windows
Required Action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Known Ransomware Campaign Use: Known
Exploitation References: https://mp.weixin.qq.com/s?__biz=Mzg2NjgzNjA5NQ==&mid=2247514973&idx=2&sn=0776f8f83c032c4d7433a567270a7ee1&source=41#wechat_redirect
Microsoft
Windows Common Log File System Driver Elevation of Privilege Vulnerability
vendor_msrc·2021-12-14·CVSS 7.8
CVE-2021-43207 [HIGH] Windows Common Log File System Driver Elevation of Privilege Vulnerability
Windows Common Log File System Driver Elevation of Privilege Vulnerability
Windows Common Log File System Driver: Windows Common Log File System Driver
Microsoft: Microsoft
Impact: Elevation of Privilege
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation More Likely;Older Software Release:Exploitation More Likely;DOS:N/A
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5008218
Reference: https://support.microsoft.com/help/5008218
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5008206
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5008212
Reference: https://support.microsoft.com/help/5008212
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5008223
R
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2021-12-15
Published
Exploited in the wild