CVE-2021-43890— Microsoft Windows AppX Installer 安全漏洞
一分钟漏洞结论
影响对象
Microsoft App Installer
利用判断
已确认在野利用，应立即处置
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Microsoft Windows AppX Installer是美国微软（Microsoft）公司的一款免费的 Microsoft 安装应用。用于在 Windows 10 上安装 Appx 应用。 Microsoft Windows AppX Installer 存在安全漏洞。目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。
已观察到在野利用
cisa_kev · confirmed
可能的 ATT&CK 技术 2 AI
T1195.002 · Compromise Software Supply Chain T1566.001 · Spearphishing Attachment影响版本矩阵 1
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Microsoft | App Installer | 1.0.0.0< publication |
affected |
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一、 漏洞 CVE-2021-43890 基础信息
漏洞信息
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Vulnerability Title
Windows AppX Installer Spoofing Vulnerability
来源: CVE Program / CVE List V5
Vulnerability Description
We have investigated reports of a spoofing vulnerability in AppX installer that affects Microsoft Windows. Microsoft is aware of attacks that attempt to exploit this vulnerability by using specially crafted packages that include the malware family known as Emotet/Trickbot/Bazaloader.
An attacker could craft a malicious attachment to be used in phishing campaigns. The attacker would then have to convince the user to open the specially crafted attachment. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.
Please see the Security Updates table for the link to the updated app. Alternatively you can download and install the Installer using the links provided in the FAQ section.
Please see the Mitigations and Workaround sections for important information about steps you can take to protect your system from this vulnerability.
December 27 2023 Update:
In recent months, Microsoft Threat Intelligence has seen an increase in activity from threat actors leveraging social engineering and phishing techniques to target Windows OS users and utilizing the ms-appinstaller URI scheme.
To address this increase in activity, we have updated the App Installer to disable the ms-appinstaller protocol by default and recommend other potential mitigations.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows AppX Installer 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Microsoft Windows AppX Installer是美国微软（Microsoft）公司的一款免费的 Microsoft 安装应用。用于在 Windows 10 上安装 Appx 应用。 Microsoft Windows AppX Installer 存在安全漏洞。目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| Microsoft | App Installer | 1.0.0.0 ~ publication |
cpe:2.3:a:microsoft:app_installer:*:*:*:*:*:*:*:*
|
|
二、漏洞 CVE-2021-43890 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
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未找到公开 POC。
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CVE-2021-43890 补丁与修复 (1)
CVE-2021-43890 厂商安全公告 (1)
CVE-2021-43890 安全博客文章 (1)
CVE-2021-43890 新闻报道 (2)
同批安全公告 · Microsoft · 2021-12-15 · 共 67 条
| CVE-2021-42313 | 10.0 CRITICAL | Microsoft Defender SQL注入漏洞 |
| CVE-2021-42311 | 10.0 CRITICAL | Microsoft Defender SQL注入漏洞 |
| CVE-2021-43215 | 9.8 CRITICAL | Microsoft Internet Information Services 缓冲区错误漏洞 |
| CVE-2021-43907 | 9.8 CRITICAL | Microsoft Visual Studio 代码注入漏洞 |
| CVE-2021-43899 | 9.8 CRITICAL | Microsoft 4K Wireless Display Adapter 代码注入漏洞 |
| CVE-2021-43905 | 9.6 CRITICAL | Microsoft Office 代码注入漏洞 |
| CVE-2021-43882 | 9.0 CRITICAL | Microsoft Defender 信任管理问题漏洞 |
| CVE-2021-42315 | 8.8 HIGH | Microsoft Defender 代码注入漏洞 |
| CVE-2021-42314 | 8.8 HIGH | Microsoft Defender 代码注入漏洞 |
| CVE-2021-41365 | 8.8 HIGH | Microsoft Defender SQL注入漏洞 |
| CVE-2021-42309 | 8.8 HIGH | Microsoft SharePoint 代码注入漏洞 |
| CVE-2021-43877 | 8.8 HIGH | Microsoft ASP.NET Core和Visual Studio 权限许可和访问控制问题漏洞 |
| CVE-2021-43217 | 8.1 HIGH | Microsoft Windows 代码注入漏洞 |
| CVE-2021-42310 | 8.1 HIGH | Microsoft Defender 代码注入漏洞 |
| CVE-2021-42320 | 8.0 HIGH | Microsoft SharePoint安全漏洞 |
| CVE-2021-43232 | 7.8 HIGH | Microsoft Windows Event Tracing 代码注入漏洞 |
| CVE-2021-43226 | 7.8 HIGH | Microsoft Windows Common Log File System Driver 权限许可和访问控制问题漏洞 |
| CVE-2021-43231 | 7.8 HIGH | Microsoft Windows NTFS 权限许可和访问控制问题漏洞 |
| CVE-2021-43223 | 7.8 HIGH | Microsoft Windows Remote Access Connection Manager 权限许可和访问控制问题漏洞 |
| CVE-2021-43230 | 7.8 HIGH | Microsoft Windows NTFS 权限许可和访问控制问题漏洞 |
显示前 20 条，共 67 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2021-43890
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