CVE-2020-29567
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.
Xen是英国等都是英国剑桥(Cambridge)大学的产品。Xen是一款开源的虚拟机监视器产品。Service是一款用于Windows和Linux的计算机监控和教室管理软件。effect等都是的产品。effect是一款用于添加图像效果的软件包。 Xen through 4.14.x 版本存在安全漏洞，该漏洞源于当在cpu之间移动IRQ以分配IRQ处理的负载时，IRQ向量在相关的cpu上动态分配和解除分配。只有当某些限制条件得到满足时，才能解除分配。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2020-29567
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in Xen 4.14.x. When moving IRQs between CPUs to distribute the load of IRQ handling, IRQ vectors are dynamically allocated and de-allocated on the relevant CPUs. De-allocation has to happen when certain constraints are met. If these conditions are not met when first checked, the checking CPU may send an interrupt to itself, in the expectation that this IRQ will be delivered only after the condition preventing the cleanup has cleared. For two specific IRQ vectors, this expectation was violated, resulting in a continuous stream of self-interrupts, which renders the CPU effectively unusable. A domain with a passed through PCI device can cause lockup of a physical CPU, resulting in a Denial of Service (DoS) to the entire host. Only x86 systems are vulnerable. Arm systems are not vulnerable. Only guests with physical PCI devices passed through to them can exploit the vulnerability.
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
Xen 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Xen是英国等都是英国剑桥(Cambridge)大学的产品。Xen是一款开源的虚拟机监视器产品。Service是一款用于Windows和Linux的计算机监控和教室管理软件。effect等都是的产品。effect是一款用于添加图像效果的软件包。 Xen through 4.14.x 版本存在安全漏洞，该漏洞源于当在cpu之间移动IRQ以分配IRQ处理的负载时，IRQ向量在相关的cpu上动态分配和解除分配。只有当某些限制条件得到满足时，才能解除分配。
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-2020-29567
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2020-29567 (1)
Mailing List Discussions for CVE-2020-29567 (1)
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OBLV6L6Q24PPQ2CRFXDX4Q76KU776GKI/ vendor-advisory x_refsource_FEDORA
Other References for CVE-2020-29567 (1)
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https://xenbits.xenproject.org/xsa/advisory-356.html x_refsource_MISC
Same Patch Batch · n/a · 2020-12-15 · 116 CVEs total
| CVE-2020-28442 | 7.5 HIGH | Prototype Pollution |
| CVE-2020-28456 | 7.3 HIGH | Cross-site Scripting (XSS) |
| CVE-2020-28457 | 7.2 HIGH | Cross-site Scripting (XSS) |
| CVE-2020-27055 | Google Android 安全漏洞 | |
| CVE-2020-29482 | Xen 代码问题漏洞 | |
| CVE-2020-29480 | Xen 授权问题漏洞 | |
| CVE-2020-29479 | Xen 权限许可和访问控制问题漏洞 | |
| CVE-2020-29571 | Xen 代码问题漏洞 | |
| CVE-2020-29570 | Xen 安全漏洞 | |
| CVE-2020-29569 | Linux kernel 资源管理错误漏洞 | |
| CVE-2020-27777 | Linux kernel 授权问题漏洞 | |
| CVE-2020-25712 | xorg-x11-server 缓冲区错误漏洞 | |
| CVE-2020-29568 | Xen 缓冲区错误漏洞 | |
| CVE-2020-29566 | Xen 处理逻辑错误漏洞 | |
| CVE-2020-27068 | Google Android 缓冲区错误漏洞 | |
| CVE-2020-27067 | Google Android 资源管理错误漏洞 | |
| CVE-2020-27066 | Google Android 资源管理错误漏洞 | |
| CVE-2020-27048 | Google Android 缓冲区错误漏洞 | |
| CVE-2020-27047 | Google Android 缓冲区错误漏洞 | |
| CVE-2020-27046 | Google Android 缓冲区错误漏洞 |
Showing top 20 of 116 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2020-29567
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