Description
A remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged file operations. An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
UPDATE August 10, 2021: Microsoft has completed the investigation and has released security updates to address this vulnerability. Please see the Security Updates table for the applicable update for your system. We recommend that you install these updates immediately. This security update changes the Point and Print default behavior; please see KB5005652.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows 10 Version 1507 | 10.0.10240.0 – < 10.0.10240.19022 | 10.0.10240.19022 |
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 – < 10.0.14393.4583 | 10.0.14393.4583 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – < 10.0.17763.2114, 10.0.0 – < 10.0.17763.2114 | 10.0.17763.2114 |
| Microsoft | Windows 10 Version 1909 | 10.0.0 – < 10.0.18363.1734 | 10.0.18363.1734 |
| Microsoft | Windows 10 Version 2004 | 10.0.0 – < 10.0.19041.1165 | 10.0.19041.1165 |
| Microsoft | Windows 10 Version 20H2 | 10.0.0 – < 10.0.19042.1165 | 10.0.19042.1165 |
| Microsoft | Windows 10 Version 21H1 | 10.0.0 – < 10.0.19043.1165 | 10.0.19043.1165 |
| Microsoft | Windows 7 | 6.1.0 – < 6.1.7601.25685 | 6.1.7601.25685 |
| Microsoft | Windows 7 Service Pack 1 | 6.1.0 – < 6.1.7601.25685 | 6.1.7601.25685 |
| Microsoft | Windows 8.1 | 6.3.0 – < 6.3.9600.20094 | 6.3.9600.20094 |
| Microsoft | Windows Server 2008 R2 Service Pack 1 | 6.1.7601.0 – < 6.1.7601.25685 | 6.1.7601.25685 |
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) | 6.1.7601.0 – < 6.1.7601.25685 | 6.1.7601.25685 |
| Microsoft | Windows Server 2008 Service Pack 2 | 6.0.6003.0 – < 6.0.6003.21192 | 6.0.6003.21192 |
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) | 6.0.6003.0 – < 6.0.6003.21192 | 6.0.6003.21192 |
| Microsoft | Windows Server 2012 | 6.2.9200.0 – < 6.2.9200.23435 | 6.2.9200.23435 |
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.9200.0 – < 6.2.9200.23435 | 6.2.9200.23435 |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0 – < 6.3.9600.20094 | 6.3.9600.20094 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 – < 6.3.9600.20094 | 6.3.9600.20094 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 – < 10.0.14393.4583 | 10.0.14393.4583 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 – < 10.0.14393.4583 | 10.0.14393.4583 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – < 10.0.17763.2114 | 10.0.17763.2114 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – < 10.0.17763.2114 | 10.0.17763.2114 |
| Microsoft | Windows Server version 2004 | 10.0.0 – < 10.0.19041.1165 | 10.0.19041.1165 |
| Microsoft | Windows Server version 20H2 | 10.0.0 – < 10.0.19042.1165 | 10.0.19042.1165 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
-
vpn28/CVE-2021-34481 ★ 2 · Aug 11, 2021
Check patch for CVE-2021-34481
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- MSRC-CVE-2021-34481 Windows Print Spooler Remote Code Execution Vulnerability Microsoft Security Response Center · Aug 10, 2021
References
- Windows Print Spooler Remote Code Execution Vulnerability vendor-advisory patch