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CVE-2021-3631

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，攻击者可以通过libvirt绕过限制，以提升他在主机系统上的权限。

AI Predicted 8.5 Difficulty: Moderate EPSS 0.49% · P40

Possible ATT&CK Techniques 1 AI

T1210 · Exploitation of Remote Services
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I. Basic Information for CVE-2021-3631

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in libvirt while it generates SELinux MCS category pairs for VMs' dynamic labels. This flaw allows one exploited guest to access files labeled for another guest, resulting in the breaking out of sVirt confinement. The highest threat from this vulnerability is to confidentiality and integrity.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
关键资源的不正确权限授予
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，攻击者可以通过libvirt绕过限制，以提升他在主机系统上的权限。
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 Fixed-In - libvirt v7.5.0 -

II. Public POCs for CVE-2021-3631

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III. Intelligence Information for CVE-2021-3631

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Patches & Fixes for CVE-2021-3631 (1)

Vendor Advisories for CVE-2021-3631 (4)

Mailing List Discussions for CVE-2021-3631 (1)

Other References for CVE-2021-3631 (1)

Same Patch Batch · n/a · 2022-03-02 · 61 CVEs total

CVE-2022-23953 HP PC 输入验证错误漏洞
CVE-2021-3738 Samba 资源管理错误漏洞
CVE-2021-3654 OpenStack 输入验证错误漏洞
CVE-2021-23222 PostgreSQL 安全漏洞
CVE-2021-23192 Samba输入验证错误漏洞
CVE-2021-3667 Red Hat libvirt 安全漏洞
CVE-2021-38268 Liferay Portal 安全漏洞
CVE-2022-22944 Vmware Workspace One Boxer 跨站脚本漏洞
CVE-2022-25045 Home Owners Collection Management System 信任管理问题漏洞
CVE-2022-23956 HP PC 输入验证错误漏洞
CVE-2022-23878 SeaCMS 安全漏洞
CVE-2022-23954 HP PC 输入验证错误漏洞
CVE-2022-23955 HP PC 输入验证错误漏洞
CVE-2022-23958 HP PC 输入验证错误漏洞
CVE-2022-23957 HP PC 输入验证错误漏洞
CVE-2021-41001 Aruba AOS-CX 命令注入漏洞
CVE-2021-41000 Aruba AOS-CX 命令注入漏洞
CVE-2021-41002 Aruba AOS-CX 路径遍历漏洞
CVE-2021-41003 Aruba AOS-CX 跨站脚本漏洞
CVE-2022-0711 Haproxy HAProxy 安全漏洞

Showing top 20 of 61 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: libvirt
Same vendor: n/a
Same weakness: CWE-732

V. Comments for CVE-2021-3631

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