CVE-2018-18883

Advisory lineage Upstream: 0 Downstream: 7
Modified
Published: 01 Nov 2018, 00:00
Last modified:05 Aug 2024, 11:23

Vulnerability Summary

Overall Risk (default)
medium
35/100
CVSS Score
8.8 HIGH
v3.0 (nvd)
EPSS Score
0.17% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

01 Nov 2018, 00:00
Published
Vulnerability first disclosed
05 Aug 2024, 11:23
Last Modified
Vulnerability information updated

Description

An issue was discovered in Xen 4.9.x through 4.11.x, on Intel x86 platforms, allowing x86 HVM and PVH guests to cause a host OS denial of service (NULL pointer dereference) or possibly have unspecified other impact because nested VT-x is not properly restricted.

CVSS Metrics

  • v3.0•HIGH•Score: 8.8CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • v2.0•HIGH•Score: 7.2AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.17%• Percentile: 38%

Techniques & Countermeasures

  • CWE-476•NULL Pointer Dereference

    The product dereferences a pointer that it expects to be valid but is NULL.

Affected Systems

  • xen•xen

    ≥ 4.9.0, ≤ 4.11.0

References (3)