CVE-2020-27670

Advisory lineage Upstream: 0 Downstream: 21
Modified
Published: 22 Oct 2020, 20:34
Last modified:04 Aug 2024, 16:18

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.04% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

22 Oct 2020, 20:34
Published
Vulnerability first disclosed
04 Aug 2024, 16:18
Last Modified
Vulnerability information updated

Description

An issue was discovered in Xen through 4.14.x allowing x86 guest OS users to cause a denial of service (data corruption), cause a data leak, or possibly gain privileges because an AMD IOMMU page-table entry can be half-updated.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 6.9AV:L/AC:M/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.04%• Percentile: 14%

Techniques & Countermeasures

  • CWE-345•Insufficient Verification of Data Authenticity

    The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

Affected Systems

  • debian•debian_linux

    10.0

  • fedoraproject•fedora

    31

  • opensuse•leap

    15.1 | 15.2

  • xen•xen

    ≤ 4.14.0

References (8)