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CVE-2020-11743

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 4.13.x及之前版本中存在安全漏洞。攻击者可利用该漏洞造成拒绝服务。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.53% · P43

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2020-11743

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 4.13.x, allowing guest OS users to cause a denial of service because of a bad error path in GNTTABOP_map_grant. Grant table operations are expected to return 0 for success, and a negative number for errors. Some misplaced brackets cause one error path to return 1 instead of a negative value. The grant table code in Linux treats this condition as success, and proceeds with incorrectly initialised state. A buggy or malicious guest can construct its grant table in such a way that, when a backend domain tries to map a grant, it hits the incorrect error path. This will crash a Linux based dom0 or backend domain.
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是英国剑桥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 4.13.x及之前版本中存在安全漏洞。攻击者可利用该漏洞造成拒绝服务。
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
- n/a n/a -

II. Public POCs for CVE-2020-11743

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III. Intelligence Information for CVE-2020-11743

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Vendor Advisories for CVE-2020-11743 (2)

Mailing List Discussions for CVE-2020-11743 (5)

Other References for CVE-2020-11743 (2)

Same Patch Batch · n/a · 2020-04-14 · 32 CVEs total

CVE-2020-10382 MB CONNECT LINE mymbCONNECT24和mbCONNECT24 安全漏洞
CVE-2020-11739 Xen 竞争条件问题漏洞
CVE-2020-11740 Xen 信息泄露漏洞
CVE-2020-11741 Xen 安全漏洞
CVE-2020-11742 Xen 安全漏洞
CVE-2020-5738 Grandstream GXP1600 后置链接漏洞
CVE-2020-5739 Grandstream GXP1600 代码注入漏洞
CVE-2020-9460 Octech Oempro 跨站脚本漏洞
CVE-2020-9461 Octech Oempro 跨站脚本漏洞
CVE-2020-9004 Wowza Media Systems Streaming Engine 访问控制错误漏洞
CVE-2020-7958 OnePlus 7 Pro 信息泄露漏洞
CVE-2019-16879 Synergy Systems & Solutions HUSKY RTU 6049-E70 访问控制错误漏洞
CVE-2020-7800 Synergy Systems & Solutions HUSKY RTU 6049-E70 代码问题漏洞
CVE-2020-7801 Synergy Systems & Solutions HUSKY RTU 6049-E70 信息泄露漏洞
CVE-2020-7802 Synergy Systems & Solutions HUSKY RTU 6049-E70 安全漏洞
CVE-2020-10381 MB CONNECT LINE mymbCONNECT24和mbCONNECT24 SQL注入漏洞
CVE-2020-11758 Industrial Light and Magic OpenEXR 缓冲区错误漏洞
CVE-2020-10383 MB CONNECT LINE mymbCONNECT24和mbCONNECT24 安全漏洞
CVE-2020-10384 MB CONNECT LINE mymbCONNECT24 安全漏洞
CVE-2019-18822 ZOOM Call Recording 安全漏洞

Showing top 20 of 32 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2020-11743

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