CVE-2020-29482
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，该漏洞源于客户机可以通过包含完整路径名的绝对路径访问xenstore路径，也可以通过相对路径访问xenstore路径，相对路径隐式地包含本地域$DOMID作为它们自己的域id。管理工具必须访问客户机名称空间中的路径，必须使用绝对路径。oxenstored强加了一个路径名限制，仅应
Possible ATT&CK Techniques 1 AI
T1499.003 · Application Exhaustion Flood
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I. Basic Information for CVE-2020-29482
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in Xen through 4.14.x. A guest may access xenstore paths via absolute paths containing a full pathname, or via a relative path, which implicitly includes /local/domain/$DOMID for their own domain id. Management tools must access paths in guests' namespaces, necessarily using absolute paths. oxenstored imposes a pathname limit that is applied solely to the relative or absolute path specified by the client. Therefore, a guest can create paths in its own namespace which are too long for management tools to access. Depending on the toolstack in use, a malicious guest administrator might cause some management tools and debugging operations to fail. For example, a guest administrator can cause "xenstore-ls -r" to fail. However, a guest administrator cannot prevent the host administrator from tearing down the domain. All systems using oxenstored are vulnerable. Building and using oxenstored is the default in the upstream Xen distribution, if the Ocaml compiler is available. Systems using C xenstored are not 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 代码问题漏洞
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，该漏洞源于客户机可以通过包含完整路径名的绝对路径访问xenstore路径，也可以通过相对路径访问xenstore路径，相对路径隐式地包含本地域$DOMID作为它们自己的域id。管理工具必须访问客户机名称空间中的路径，必须使用绝对路径。oxenstored强加了一个路径名限制，仅应
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-2020-29482
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2020-29482 (1)
Mailing List Discussions for CVE-2020-29482 (2)
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2C6M6S3CIMEBACH6O7V4H2VDANMO6TVA/ vendor-advisory x_refsource_FEDORA
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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-2020-29482 (1)
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https://xenbits.xenproject.org/xsa/advisory-323.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-2020-29480 | 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-2020-29567 | 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
V. Comments for CVE-2020-29482
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