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CVE-2021-3947

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 NVME component 存在缓冲区错误漏洞,该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。攻击者可利用该漏洞导致缓冲区溢出或堆溢出等。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.32% · P22
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I. Basic Information for CVE-2021-3947

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A stack-buffer-overflow was found in QEMU in the NVME component. The flaw lies in nvme_changed_nslist() where a malicious guest controlling certain input can read out of bounds memory. A malicious user could use this flaw leading to disclosure of sensitive information.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
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 NVME component 存在缓冲区错误漏洞,该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。攻击者可利用该漏洞导致缓冲区溢出或堆溢出等。
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-rc2 -

II. Public POCs for CVE-2021-3947

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III. Intelligence Information for CVE-2021-3947

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Vendor Advisories for CVE-2021-3947 (3)

Same Patch Batch · n/a · 2022-02-18 · 66 CVEs total

CVE-2022-25299 9.8 CRITICAL Arbitrary File Write
CVE-2021-23702 7.6 HIGH Prototype Pollution
CVE-2022-25298 7.5 HIGH Path Traversal
CVE-2021-46062 MingSoft MCMS 安全漏洞
CVE-2022-25134 TotoLink routers 命令注入漏洞
CVE-2022-25135 TotoLink routers 命令注入漏洞
CVE-2022-25133 TotoLink routers 命令注入漏洞
CVE-2021-46110 Online Shopping Portal 安全漏洞
CVE-2021-46082 Moxa Tn-5900 安全漏洞
CVE-2021-46063 MingSoft MCMS 代码代码注入漏洞
CVE-2021-40841 LiveConfig 路径遍历漏洞
CVE-2021-46037 MingSoft MCMS 安全漏洞
CVE-2021-46036 MingSoft MCMS 代码问题漏洞
CVE-2021-30650 Broadcom Symantec Layer7 API Management OAuth Toolkit跨站脚本漏洞
CVE-2020-8242 Packet Tide ExpressionEngine 安全漏洞
CVE-2021-3657 Sourceforge mbsync 缓冲区错误漏洞
CVE-2021-3930 QEMU 安全漏洞
CVE-2021-20325 Red Hat Enterprise Linux 代码问题漏洞
CVE-2021-20322 Linux kernel 安全特征问题漏洞
CVE-2021-20321 Linux kernel 竞争条件问题漏洞

Showing top 20 of 66 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: QEMU
Same vendor: n/a
Same weakness: CWE-125

V. Comments for CVE-2021-3947

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