CVE-2021-4145
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I. Basic Information for CVE-2021-4145
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A NULL pointer dereference issue was found in the block mirror layer of QEMU in versions prior to 6.2.0. The `self` pointer is dereferenced in mirror_wait_on_conflicts() without ensuring that it's not NULL. A malicious unprivileged user within the guest could use this flaw to crash the QEMU process on the host when writing data reaches the threshold of mirroring node.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
空指针解引用
Source: NVD (National Vulnerability Database)
Vulnerability Title
QEMU 代码问题漏洞
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 6.2.0之前版本存在代码问题漏洞，该漏洞源于块镜像层中发现了一个空指针解引用问题。攻击者可利用该漏洞使主机上的QEMU进程崩溃。
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 6.2.0 | - |
II. Public POCs for CVE-2021-4145
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://security.netapp.com/advisory/ntap-20220311-0004/x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=2034602x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-4145
Same Patch Batch · n/a · 2022-01-25 · 67 CVEs total
| CVE-2021-45803 | MartDevelopers Iresturant SQL注入漏洞 | |
| CVE-2021-40159 | Autodesk Inventor 信息泄露漏洞 | |
| CVE-2021-40158 | Autodesk Inventor 缓冲区错误漏洞 | |
| CVE-2021-44988 | JerryScript 缓冲区错误漏洞 | |
| CVE-2021-46483 | Jsish 缓冲区错误漏洞 | |
| CVE-2022-23935 | exiftool 操作系统命令注入漏洞 | |
| CVE-2021-45340 | libsixel 代码问题漏洞 | |
| CVE-2021-45844 | FreeCad 操作系统命令注入漏洞 | |
| CVE-2021-45845 | FreeCad 操作系统命令注入漏洞 | |
| CVE-2021-45802 | MartDevelopers Iresturant SQL注入漏洞 | |
| CVE-2021-46481 | Jsish 安全漏洞 | |
| CVE-2021-46113 | MartDevelopers KEA-Hotel-ERP 代码问题漏洞 | |
| CVE-2021-45846 | Slic3r 代码问题漏洞 | |
| CVE-2021-45847 | Slic3r 代码问题漏洞 | |
| CVE-2021-46089 | JeecgBoot SQL注入漏洞 | |
| CVE-2021-46033 | ForestBlog 代码问题漏洞 | |
| CVE-2021-46034 | ForestBlog 跨站脚本漏洞 | |
| CVE-2021-46086 | Mindskip xzs-mysql 权限许可和访问控制问题漏洞 | |
| CVE-2021-46084 | Uscat 跨站脚本漏洞 | |
| CVE-2021-46083 | Uscat 跨站脚本漏洞 |
Showing top 20 of 67 CVEs. View all on vendor page → →
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Same weakness: CWE-476
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V. Comments for CVE-2021-4145
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