CVE-2021-4206
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I. Basic Information for CVE-2021-4206
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in the QXL display device emulation in QEMU. An integer overflow in the cursor_alloc() function can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. This flaw allows a malicious privileged guest user to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
整数溢出或超界折返
Source: NVD (National Vulnerability Database)
Vulnerability Title
QEMU 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
QEMU（Quick Emulator）是法国法布里斯-贝拉（Fabrice Bellard）个人开发者的一套模拟处理器软件。该软件具有速度快、跨平台等特点。 QEMU v6.0.0 之前版本存在安全漏洞，该漏洞源于 cursor_alloc（） 中的整数溢出可能导致堆缓冲区溢出。恶意特权攻击者利用此漏洞可在主机上使 QEMU 进程崩溃，或者可能在 QEMU 进程的上下文中执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | QEMU | qemu-kvm 7.0.0 | - |
II. Public POCs for CVE-2021-4206
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://bugzilla.redhat.com/show_bug.cgi?id=2036998x_refsource_MISC
- https://starlabs.sg/advisories/21-4206/x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-4206
Same Patch Batch · n/a · 2022-04-29 · 33 CVEs total
| CVE-2022-25854 | 5.4 MEDIUM | Cross-site Scripting (XSS) |
| CVE-2022-29945 | 4.0 MEDIUM | DJI drone 安全漏洞 |
| CVE-2022-29904 | MediaWiki SQL注入漏洞 | |
| CVE-2022-1048 | Linux kernel 资源管理错误漏洞 | |
| CVE-2022-29856 | Automation 360 信任管理问题漏洞 | |
| CVE-2022-28452 | Red Planet Laundry Management System SQL注入漏洞 | |
| CVE-2021-41948 | Subrion CMS 跨站脚本漏洞 | |
| CVE-2021-44596 | Wondershare 安全漏洞 | |
| CVE-2021-44595 | Wondershare 安全漏洞 | |
| CVE-2021-41942 | Magic CMS SQL注入漏洞 | |
| CVE-2022-29903 | MediaWiki 跨站请求伪造漏洞 | |
| CVE-2022-1195 | Linux kernel 资源管理错误漏洞 | |
| CVE-2022-29905 | MediaWiki 跨站请求伪造漏洞 | |
| CVE-2022-29906 | MediaWiki 安全漏洞 | |
| CVE-2022-29907 | MediaWiki 跨站脚本漏洞 | |
| CVE-2021-3982 | gnome-shell 安全漏洞 | |
| CVE-2022-1015 | Linux kernel 缓冲区错误漏洞 | |
| CVE-2022-1114 | Imagemagick Studio ImageMagick 资源管理错误漏洞 | |
| CVE-2022-29967 | Glewlwyd 路径遍历漏洞 | |
| CVE-2022-1249 | RedHat pesign 代码问题漏洞 |
Showing top 20 of 33 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same vendor: n/a
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Same weakness: CWE-190
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V. Comments for CVE-2021-4206
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