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

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2021-28690

Quick assessment

Affected
Xen xen
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 存在信息泄露漏洞，该漏洞源于S3 TSX Async Abort protections可以绕过对数据的访问限制。在客户系统中，攻击者可利用该漏洞获取主机系统上的敏感信息。

AI Predicted 5.6 Difficulty: Hard EPSS 1.02% · P60

Possible ATT&CK Techniques 1 AI

T1542.002 · Component Firmware
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-28690

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
x86: TSX Async Abort protections not restored after S3 This issue relates to the TSX Async Abort speculative security vulnerability. Please see https://xenbits.xen.org/xsa/advisory-305.html for details. Mitigating TAA by disabling TSX (the default and preferred option) requires selecting a non-default setting in MSR_TSX_CTRL. This setting isn't restored after S3 suspend.
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 信息泄露漏洞
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 存在信息泄露漏洞，该漏洞源于S3 TSX Async Abort protections可以绕过对数据的访问限制。在客户系统中，攻击者可利用该漏洞获取主机系统上的敏感信息。
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
Xen xen unspecified ~ 4.12 -
Xen xen 4.12.x -
Xen xen 4.11.x -

II. Public POCs for CVE-2021-28690

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-28690

请登录查看更多情报信息。

Vendor Advisories for CVE-2021-28690 (1)

Other References for CVE-2021-28690 (1)

IV. Related Vulnerabilities

Same product: xen
Same vendor: Xen

V. Comments for CVE-2021-28690

No comments yet

Leave a comment