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CVE-2021-4158

Quick assessment

Affected
n/a QEMU
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 存在安全漏洞，该漏洞源于QEMU 网卡模拟器错误处理了某些值。客户机内部的攻击者可利用该漏洞导致QEMU崩溃，从而导致拒绝服务。

AI Predicted 5.9 Difficulty: Trivial EPSS 0.40% · P33

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-4158

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
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 存在安全漏洞，该漏洞源于QEMU 网卡模拟器错误处理了某些值。客户机内部的攻击者可利用该漏洞导致QEMU崩溃，从而导致拒绝服务。
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 Affects v6.0.0 and above. -

II. Public POCs for CVE-2021-4158

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III. Intelligence Information for CVE-2021-4158

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Patches & Fixes for CVE-2021-4158 (1)

Vendor Advisories for CVE-2021-4158 (2)

Mailing List Discussions for CVE-2021-4158 (1)

Other References for CVE-2021-4158 (1)

Same Patch Batch · n/a · 2022-08-24 · 40 CVEs total

CVE-2022-25903 7.5 HIGH Denial of Service (DoS)
CVE-2022-24375 7.5 HIGH Denial of Service (DoS)
CVE-2021-39815 Google Android 资源管理错误漏洞
CVE-2021-0946 Google Android 缓冲区错误漏洞
CVE-2022-20122 Google Android 资源管理错误漏洞
CVE-2021-4178 Kubernetes 代码问题漏洞
CVE-2021-4209 GnuTLS 代码问题漏洞
CVE-2021-4213 Linux jss 安全漏洞
CVE-2021-4218 Linux kernel 安全漏洞
CVE-2021-4217 Info-ZIP UnZip 代码问题漏洞
CVE-2021-4122 cryptsetup 数据伪造问题漏洞
CVE-2021-4125 Red Hat OpenShift 代码问题漏洞
CVE-2021-4142 Red Hat Satellite 授权问题漏洞
CVE-2021-4155 Red Hat Enterprise Linux 权限许可和访问控制问题漏洞
CVE-2021-4159 Linux kernel 安全漏洞
CVE-2021-4041 Ansible-Runner 操作系统命令注入漏洞
CVE-2021-4040 Red Hat AMQ Broker 缓冲区错误漏洞
CVE-2022-37181 72crm 代码问题漏洞
CVE-2022-37178 72crm SQL注入漏洞
CVE-2018-14520 Kirby 跨站脚本漏洞

Showing top 20 of 40 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: QEMU
Same vendor: n/a
Same weakness: CWE-476

V. Comments for CVE-2021-4158

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