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CVE-2021-3416

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 5.2.0版本及之前版本存在安全漏洞。攻击者可利用该漏洞通过NIC环回模式触发致命错误，从而在主机系统上触发拒绝服务。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.46% · P38

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-3416

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions up to and including 5.2.0. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in DoS scenario.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: CVE Program / CVE List V5
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 5.2.0版本及之前版本存在安全漏洞。攻击者可利用该漏洞通过NIC环回模式触发致命错误，从而在主机系统上触发拒绝服务。
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 versions up to and including 5.2.0 -

II. Public POCs for CVE-2021-3416

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III. Intelligence Information for CVE-2021-3416

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Vendor Advisories for CVE-2021-3416 (3)

Mailing List Discussions for CVE-2021-3416 (3)

Same Patch Batch · n/a · 2021-03-18 · 45 CVEs total

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CVE-2020-14516 Rockwell Automation FactoryTalk Services Platform 安全漏洞
CVE-2021-22665 Rockwell Automation DriveTools SP 和 Drives AOP 代码问题漏洞
CVE-2020-26155 Utimaco SecurityServer 安全漏洞
CVE-2021-26216 SeedDMS 跨站请求伪造漏洞
CVE-2021-26215 SeedDMS 跨站请求伪造漏洞
CVE-2021-28145 Portlandlabs Concrete5 跨站脚本漏洞

Showing top 20 of 45 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: QEMU
Same vendor: n/a
Same weakness: CWE-835

V. Comments for CVE-2021-3416

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