Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2020-29479

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 through 4.14.x 版本存在权限许可和访问控制问题漏洞，该漏洞源于在Ocaml xenstored实现中，树的内部表示具有根节点的特殊情况，因为这个节点没有父节点。不幸的是，没有检查根节点上某些操作的权限。非特权来宾可以获得和修改权限、列出和删除根节点(删除整个xenstore树是主机范围内的拒绝服务)实现xe

AI Predicted 7.5 Difficulty: Easy EPSS 0.31% · P22
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2020-29479

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in Xen through 4.14.x. In the Ocaml xenstored implementation, the internal representation of the tree has special cases for the root node, because this node has no parent. Unfortunately, permissions were not checked for certain operations on the root node. Unprivileged guests can get and modify permissions, list, and delete the root node. (Deleting the whole xenstore tree is a host-wide denial of service.) Achieving xenstore write access is also possible. 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 权限许可和访问控制问题漏洞
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 through 4.14.x 版本存在权限许可和访问控制问题漏洞，该漏洞源于在Ocaml xenstored实现中，树的内部表示具有根节点的特殊情况，因为这个节点没有父节点。不幸的是，没有检查根节点上某些操作的权限。非特权来宾可以获得和修改权限、列出和删除根节点(删除整个xenstore树是主机范围内的拒绝服务)实现xe
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-2020-29479

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2020-29479

请登录查看更多情报信息。

Vendor Advisories for CVE-2020-29479 (2)

Mailing List Discussions for CVE-2020-29479 (2)

Other References for CVE-2020-29479 (1)

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-2020-29571 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

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

V. Comments for CVE-2020-29479

No comments yet

Leave a comment