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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2024-45819— libxl leaks data to PVH guests via ACPI tables

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Xen开源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存在安全漏洞，该漏洞源于在构建PVH客人的ACPI表时，未正确初始化分配的额外内存空间，导致可能泄露之前存储在该内存区域的数据。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.30% · P21

Possible ATT&CK Techniques 1 AI

T1608.002 · Upload Tool
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2024-45819

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
libxl leaks data to PVH guests via ACPI tables
Source: CVE Program / CVE List V5
Vulnerability Description
PVH guests have their ACPI tables constructed by the toolstack. The construction involves building the tables in local memory, which are then copied into guest memory. While actually used parts of the local memory are filled in correctly, excess space that is being allocated is left with its prior contents.
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Xen开源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存在安全漏洞，该漏洞源于在构建PVH客人的ACPI表时，未正确初始化分配的额外内存空间，导致可能泄露之前存储在该内存区域的数据。
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 consult Xen advisory XSA-464 -

II. Public POCs for CVE-2024-45819

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2024-45819

请登录查看更多情报信息。

Vendor Advisories for CVE-2024-45819 (1)

Same Patch Batch · Xen · 2024-12-19 · 3 CVEs total

CVE-2024-2201 CVE-2024-2201
CVE-2024-45818 Deadlock in x86 HVM standard VGA handling

IV. Related Vulnerabilities

Same product: Xen
Same vendor: Xen

V. Comments for CVE-2024-45819

No comments yet

Leave a comment