CVE-2020-27674
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 4.14.x 系列版本存在安全漏洞，该问题使x86 PV来宾用户可以通过修改内核内存内容来获得来宾特权。
Possible ATT&CK Techniques 2 AI
T1203 · Exploitation for Client Execution T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2020-27674
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 allowing x86 PV guest OS users to gain guest OS privileges by modifying kernel memory contents, because invalidation of TLB entries is mishandled during use of an INVLPG-like attack technique.
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 系列版本存在安全漏洞，该问题使x86 PV来宾用户可以通过修改内核内存内容来获得来宾特权。
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 | - |
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II. Public POCs for CVE-2020-27674
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2020-27674 (2)
Mailing List Discussions for CVE-2020-27674 (4)
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3U4LNKKXU4UP4Z5XP6TMIWSML3QODPE/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PZAM3LYJ5TZLSSNL3KXFILM46QKVTOUA/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/ vendor-advisory x_refsource_FEDORA
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Other References for CVE-2020-27674 (1)
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https://xenbits.xen.org/xsa/advisory-286.html x_refsource_MISC
Same Patch Batch · n/a · 2020-10-22 · 30 CVEs total
| CVE-2019-16127 | Microchip Atmel Advanced Software Framework 输入验证错误漏洞 | |
| CVE-2020-27670 | Xen 数据伪造问题漏洞 | |
| CVE-2020-27671 | Xen 安全漏洞 | |
| CVE-2020-27672 | Xen 资源管理错误漏洞 | |
| CVE-2020-27673 | Linux kernel 资源管理错误漏洞 | |
| CVE-2020-27675 | Linux kernel 资源管理错误漏洞 | |
| CVE-2020-18129 | 赞赞网络科技 EyouCms 跨站请求伪造漏洞 | |
| CVE-2020-3996 | Velero 信息泄露漏洞 | |
| CVE-2020-25186 | WECON Technologies LeviStudioU 代码问题漏洞 | |
| CVE-2020-10721 | fabric8-maven-plugin 代码问题漏洞 | |
| CVE-2019-16128 | Microchip CryptoAuthLib 缓冲区错误漏洞 | |
| CVE-2019-16129 | Microchip CryptoAuthLib 缓冲区错误漏洞 | |
| CVE-2020-27664 | Strapi 安全漏洞 | |
| CVE-2020-27665 | Strapi 安全漏洞 | |
| CVE-2020-27666 | Strapi 跨站脚本漏洞 | |
| CVE-2020-27560 | ImageMagick Studio ImageMagick 数字错误漏洞 | |
| CVE-2020-15906 | Tiki 安全漏洞 | |
| CVE-2020-27155 | Octopus Deploy 安全漏洞 | |
| CVE-2020-27195 | Hashicorp Nomad Enterprise 安全漏洞 | |
| CVE-2020-27533 | Desdev DedeCMS 跨站脚本漏洞 |
Showing top 20 of 30 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2020-27674
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