CVE-2021-4147
Quick assessment
Affected
n/a libvirt
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.
Red Hat libvirt是美国红帽（Red Hat）公司的一个用于实现Linux虚拟化功能的Linux API，它支持各种Hypervisor，包括Xen和KVM，以及QEMU和用于其他操作系统的一些虚拟产品。 Red Hat libvirt 存在安全漏洞，攻击者可利用该漏洞触发主机系统上的拒绝服务。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-4147
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the libvirt libxl driver. A malicious guest could continuously reboot itself and cause libvirtd on the host to deadlock or crash, 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
加锁机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat libvirt 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat libvirt是美国红帽（Red Hat）公司的一个用于实现Linux虚拟化功能的Linux API，它支持各种Hypervisor，包括Xen和KVM，以及QEMU和用于其他操作系统的一些虚拟产品。 Red Hat libvirt 存在安全漏洞，攻击者可利用该漏洞触发主机系统上的拒绝服务。
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 |
|---|---|---|---|---|
| - | libvirt | libvirt 2.33.0 | - |
|
II. Public POCs for CVE-2021-4147
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-4147 (2)
-
https://security.netapp.com/advisory/ntap-20220513-0004/ x_refsource_CONFIRM
-
https://bugzilla.redhat.com/show_bug.cgi?id=2034195 x_refsource_MISC
Mailing List Discussions for CVE-2021-4147 (1)
Same Patch Batch · n/a · 2022-03-25 · 53 CVEs total
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| CVE-2022-0897 | Red Hat libvirt 安全漏洞 | |
| CVE-2022-0435 | Linux kernel 缓冲区错误漏洞 | |
| CVE-2018-25032 | zlib 缓冲区错误漏洞 | |
| CVE-2021-4203 | Linux kernel 资源管理错误漏洞 | |
| CVE-2021-3941 | ILM OpenEXR 数字错误漏洞 | |
| CVE-2021-3933 | ILM OpenEXR 输入验证错误漏洞 | |
| CVE-2022-0330 | Linux kernel 缓冲区错误漏洞 | |
| CVE-2022-25577 | ALF-BanCo 信任管理问题漏洞 | |
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| CVE-2022-27881 | OpenBSD 安全漏洞 | |
| CVE-2022-27882 | OpenBSD 安全漏洞 | |
| CVE-2021-43636 | TotoLink T10 安全漏洞 | |
| CVE-2021-22100 | cloud foundry 资源管理错误漏洞 | |
| CVE-2021-4157 | Linux kernel 缓冲区错误漏洞 | |
| CVE-2021-4202 | Linux kernel 资源管理错误漏洞 | |
| CVE-2021-20290 | OpenSC 安全漏洞 | |
| CVE-2021-3567 | SUSE OpenStack Cloud 缓冲区错误漏洞 | |
| CVE-2021-3582 | QEMU 缓冲区错误漏洞 |
Showing top 20 of 53 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2021-4147
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