CVE-2020-29568
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是英国剑桥（Cambridge）大学的一款开源的虚拟机监视器产品。该产品能够使不同和不兼容的操作系统运行在同一台计算机上，并支持在运行时进行迁移，保证正常运行并且避免宕机。 Xen 4.14.x版本及之前版本存在安全漏洞，该漏洞源于正在使用单个线程处理监视事件。如果接收事件的速度快于线程处理的速度，那么它们将进入队列。由于队列是无限制的，客户端可能会在后端触发一个OOM。所有带有FreeBSD、Linux或NetBSD(任何版本)dom0的系统都是脆弱的。
Possible ATT&CK Techniques 1 AI
T1496 · Resource Hijacking
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I. Basic Information for CVE-2020-29568
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in Xen through 4.14.x. Some OSes (such as Linux, FreeBSD, and NetBSD) are processing watch events using a single thread. If the events are received faster than the thread is able to handle, they will get queued. As the queue is unbounded, a guest may be able to trigger an OOM in the backend. All systems with a FreeBSD, Linux, or NetBSD (any version) dom0 are vulnerable.
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 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Xen是英国剑桥（Cambridge）大学的一款开源的虚拟机监视器产品。该产品能够使不同和不兼容的操作系统运行在同一台计算机上，并支持在运行时进行迁移，保证正常运行并且避免宕机。 Xen 4.14.x版本及之前版本存在安全漏洞，该漏洞源于正在使用单个线程处理监视事件。如果接收事件的速度快于线程处理的速度，那么它们将进入队列。由于队列是无限制的，客户端可能会在后端触发一个OOM。所有带有FreeBSD、Linux或NetBSD(任何版本)dom0的系统都是脆弱的。
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-2020-29568
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2020-29568 (2)
Mailing List Discussions for CVE-2020-29568 (2)
Other References for CVE-2020-29568 (1)
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https://xenbits.xenproject.org/xsa/advisory-349.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-2020-29567 | Xen 安全漏洞 | |
| 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
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