一、 漏洞 CVE-2021-34527 基础信息
漏洞信息
                                        # Windows Print Spooler 远程代码执行漏洞

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漏洞标题
Windows Print Spooler Remote Code Execution Vulnerability
来源：美国国家漏洞数据库 NVD
漏洞描述信息
<p>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.</p> <p>UPDATE July 7, 2021: The security update for Windows Server 2012, Windows Server 2016 and Windows 10, Version 1607 have been released. Please see the Security Updates table for the applicable update for your system. We recommend that you install these updates immediately. If you are unable to install these updates, see the FAQ and Workaround sections in this CVE for information on how to help protect your system from this vulnerability.</p> <p>In addition to installing the updates, in order to secure your system, you must confirm that the following registry settings are set to 0 (zero) or are not defined (<strong>Note</strong>: These registry keys do not exist by default, and therefore are already at the secure setting.), also that your Group Policy setting are correct (see FAQ):</p> <ul> <li>HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\Printers\PointAndPrint</li> <li>NoWarningNoElevationOnInstall = 0 (DWORD) or not defined (default setting)</li> <li>UpdatePromptSettings = 0 (DWORD) or not defined (default setting)</li> </ul> <p><strong>Having NoWarningNoElevationOnInstall set to 1 makes your system vulnerable by design.</strong></p> <p>UPDATE July 6, 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. If you are unable to install these updates, see the FAQ and Workaround sections in this CVE for information on how to help protect your system from this vulnerability. See also <a href="https://support.microsoft.com/topic/31b91c02-05bc-4ada-a7ea-183b129578a7">KB5005010: Restricting installation of new printer drivers after applying the July 6, 2021 updates</a>.</p> <p>Note that the security updates released on and after July 6, 2021 contain protections for CVE-2021-1675 and the additional remote code execution exploit in the Windows Print Spooler service known as “PrintNightmare”, documented in CVE-2021-34527.</p>
来源：美国国家漏洞数据库 NVD
CVSS信息
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
来源：美国国家漏洞数据库 NVD
漏洞类别
N/A
来源：美国国家漏洞数据库 NVD
漏洞标题
Microsoft Windows Print Spooler Components 安全漏洞
来源：中国国家信息安全漏洞库 CNNVD
漏洞描述信息
Microsoft Windows Print Spooler Components是美国微软（Microsoft）公司的一个打印后台处理程序组件。 Microsoft Windows Print Spooler Components 存在安全漏洞，攻击者可以通过该漏洞绕过PfcAddPrinterDriver的安全验证，并在打印服务器中安装恶意的驱动程序。以下产品和版本受到影响:Windows 10 Version 1809 for 32-bit Systems,Windows 10 Version 1
来源：中国国家信息安全漏洞库 CNNVD
CVSS信息
N/A
来源：中国国家信息安全漏洞库 CNNVD
漏洞类别
其他
来源：中国国家信息安全漏洞库 CNNVD
二、漏洞 CVE-2021-34527 的公开POC
# POC 描述 源链接 神龙链接
1 Small Powershell Script to detect Running Printer Spoolers on Domain Controller https://github.com/DenizSe/CVE-2021-34527 POC详情
2 Kritische Sicherheitslücke PrintNightmare CVE-2021-34527 https://github.com/glshnu/PrintNightmare POC详情
3 None https://github.com/JohnHammond/CVE-2021-34527 POC详情
4 PrintNightmare - Windows Print Spooler RCE/LPE Vulnerability (CVE-2021-34527, CVE-2021-1675) proof of concept exploits https://github.com/nemo-wq/PrintNightmare-CVE-2021-34527 POC详情
5 Cve-2021-1675 or cve-2021-34527? Detailed analysis and exploitation of windows print spooler 0day vulnerability！！！ https://github.com/CnOxx1/CVE-2021-34527-1675 POC详情
6 Workaround for Windows Print Spooler Remote Code Execution Vulnerability(CVE-2021-34527). See: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34527 https://github.com/rdboboia/disable-RegisterSpoolerRemoteRpcEndPoint POC详情
7 This simple PowerShell script is in response to the "PrintNightmare" vulnerability. This was designed to give a end user the ability to stop and disable the "Print Spooler" service on their computer while awaiting a fix from Microsoft. https://github.com/geekbrett/CVE-2021-34527-PrintNightmare-Workaround POC详情
8 A PrintNightmare (CVE-2021-34527) Python Scanner. Scan entire subnets for hosts vulnerable to the PrintNightmare RCE https://github.com/byt3bl33d3r/ItWasAllADream POC详情
9 Simple batch script to disable the Microsoft Print Spooler service from system https://github.com/vinaysudheer/Disable-Spooler-Service-PrintNightmare-CVE-2021-34527 POC详情
10 How to fix the PrintNightmare vulnerability https://github.com/powershellpr0mpt/PrintNightmare-CVE-2021-34527 POC详情
11 Mitigation for CVE-2021-34527 RCE by setting WRITE ACLs https://github.com/WidespreadPandemic/CVE-2021-34527_ACL_mitigation POC详情
12 CVE-2021-34527 implementation https://github.com/glorisonlai/printnightmare POC详情
13 None https://github.com/dywhoami/CVE-2021-34527-Scanner-Based-On-cube0x0-POC POC详情
14 Fix for PrintNightmare CVE-2021-34527 https://github.com/Eutectico/Printnightmare POC详情
15 A collection of scripts to help set the appropriate registry keys for CVE-2021-34527 https://github.com/syntaxbearror/PowerShell-PrintNightmare POC详情
16 A patch for PrintNightmare vulnerability that occurs to print spooler service for Windows machines [CVE-2021-34527] https://github.com/0xirison/PrintNightmare-Patcher POC详情
17 To fight against Windows security breach PrintNightmare! (CVE-2021-34527, CVE-2021-1675) https://github.com/Tomparte/PrintNightmare POC详情
18 None https://github.com/Amaranese/CVE-2021-34527 POC详情
19 None https://github.com/cyb3rpeace/CVE-2021-34527 POC详情
20 PrintNightmare (CVE-2021-34527) PoC Exploit https://github.com/m8sec/CVE-2021-34527 POC详情
21 CVE-2021-34527 AddPrinterDriverEx() Privilege Escalation https://github.com/hackerhouse-opensource/cve-2021-34527 POC详情
22 # Fix-CVE-2021-34527 Fix for the security Script Changes ACL in the directory Stop Service PrintSpooler Spooler Changes StartupType to Disabled Add every server in the serverlist.csv and run script. https://github.com/fardinbarashi/PsFix-CVE-2021-34527 POC详情
23 CVE-2021-34527 PrintNightmare PoC https://github.com/d0rb/CVE-2021-34527 POC详情
24 detect bruteforce using for cve-2021-34527 https://github.com/TieuLong21Prosper/detect_bruteforce POC详情
25 Kritische Sicherheitslücke PrintNightmare CVE-2021-34527 https://github.com/thomas-lauer/PrintNightmare POC详情
26 None https://github.com/Hirusha-N/CVE-2021-34527-CVE-2023-38831-and-CVE-2023-32784 POC详情
27 CVE-2021-34527 is a critical remote code execution and local privilege escalation vulnerability dubbed "PrintNightmare." https://github.com/AUSK1LL9/CVE-2021-34527 POC详情
三、漏洞 CVE-2021-34527 的情报信息
四、漏洞 CVE-2021-34527 的评论

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