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CVE-2021-3638

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的ATI VGA 存在安全漏洞，该漏洞源于在QEMU的ATI VGA设备仿真中发现了内存访问越界的缺陷。攻击者可利用该漏洞破坏主机上的QEMU进程，从而导致拒绝服务。

AI Predicted 5.3 Difficulty: Easy EPSS 0.43% · P36

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-3638

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for the destination display parameters. 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
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
QEMU 缓冲区错误漏洞
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的ATI VGA 存在安全漏洞，该漏洞源于在QEMU的ATI VGA设备仿真中发现了内存访问越界的缺陷。攻击者可利用该漏洞破坏主机上的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
- QEMU Affects qemu v4.0 to v6.1 -

II. Public POCs for CVE-2021-3638

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III. Intelligence Information for CVE-2021-3638

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Vendor Advisories for CVE-2021-3638 (3)

Mailing List Discussions for CVE-2021-3638 (3)

Same Patch Batch · n/a · 2022-03-03 · 37 CVEs total

CVE-2021-45819 6.4 MEDIUM Wordline HIDCCEMonitorSVC 代码问题漏洞
CVE-2021-3609 Linux kernel 竞争条件问题漏洞
CVE-2022-26127 FRRouting FRR 缓冲区错误漏洞
CVE-2022-26128 FRRouting FRR 缓冲区错误漏洞
CVE-2022-26129 FRRouting FRR 缓冲区错误漏洞
CVE-2022-23898 MingSoft Mcms SQL注入漏洞
CVE-2022-23899 MingSoft Mcms SQL注入漏洞
CVE-2022-25125 MingSoft Mcms SQL注入漏洞
CVE-2022-22700 CyberArk Identity 安全特征问题漏洞
CVE-2021-3620 Red Hat Ansible 安全漏洞
CVE-2022-25138 Axelor Open Suite 跨站脚本漏洞
CVE-2021-3602 Buildah 信息泄露漏洞
CVE-2021-3762 Clair 路径遍历漏洞
CVE-2021-4002 Linux kernel 安全漏洞
CVE-2022-23051 PeTeReport 跨站脚本漏洞
CVE-2022-23052 PeTeReport 跨站请求伪造漏洞
CVE-2022-25220 PeTeReport 跨站脚本漏洞
CVE-2022-22943 VMware Tools for Windows 代码问题漏洞
CVE-2021-3640 Linux kernel 资源管理错误漏洞
CVE-2022-23849 Devolutions Password Hub 授权问题漏洞

Showing top 20 of 37 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: QEMU
Same vendor: n/a
Same weakness: CWE-787

V. Comments for CVE-2021-3638

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