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CVE-2020-27661

Quick assessment

Affected
n/a n/a
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 中存在数字错误漏洞，该漏洞源于在 hcd-dwc2 usb 主机控制器仿真中 hw/usb/hcd-dwc2.c 文件中的dwc2_handle_packet处理包存在一个发现了一个被零除的问题。恶意客户可能利用这个缺陷破坏主机上的QEMU进程，从而导致拒绝服务。

AI Predicted 6.5 Difficulty: Easy EPSS 0.31% · P23

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2020-27661

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A divide-by-zero issue was found in dwc2_handle_packet in hw/usb/hcd-dwc2.c in the hcd-dwc2 USB host controller emulation of QEMU. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
QEMU 数字错误漏洞
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 中存在数字错误漏洞，该漏洞源于在 hcd-dwc2 usb 主机控制器仿真中 hw/usb/hcd-dwc2.c 文件中的dwc2_handle_packet处理包存在一个发现了一个被零除的问题。恶意客户可能利用这个缺陷破坏主机上的QEMU进程，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
- n/a n/a -

II. Public POCs for CVE-2020-27661

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III. Intelligence Information for CVE-2020-27661

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Vendor Advisories for CVE-2020-27661 (2)

Mailing List Discussions for CVE-2020-27661 (2)

Other References for CVE-2020-27661 (1)

Same Patch Batch · n/a · 2021-06-02 · 54 CVEs total

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CVE-2021-3468 Avahi 安全漏洞
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CVE-2021-3530 GNU Binutils 安全漏洞

Showing top 20 of 54 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2020-27661

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