CVE-2015-8550

Aliases:UBUNTU-CVE-2015-8550DEBIAN-CVE-2015-8550
Advisory lineage Upstream: 0 Downstream: 27
Modified
Published: 14 Apr 2016, 14:00
Last modified:06 Aug 2024, 08:20

Vulnerability Summary

Overall Risk (default)
medium
33/100
CVSS Score
8.2 HIGH
v3.0 (nvd)
EPSS Score
1.08% LOW
1% probability -14.88%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

14 Apr 2016, 14:00
Published
Vulnerability first disclosed
06 Aug 2024, 08:20
Last Modified
Vulnerability information updated

Description

Xen, when used on a system providing PV backends, allows local guest OS administrators to cause a denial of service (host OS crash) or gain privileges by writing to memory shared between the frontend and backend, aka a double fetch vulnerability.

CVSS Metrics

  • v4.0•HIGH•Score: 8.9CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
  • v3.0•HIGH•Score: 8.2CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 5.7AV:L/AC:L/Au:S/C:P/I:P/A:C

EPSS Trends

Current EPSS score: 1.08%• Percentile: 64%

Techniques & Countermeasures

  • CWE-284•Improper Access Control

    The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Affected Systems

  • debian•linux

    < 4.3.3-3 | < 4.3.3-3 | < 4.3.3-3 | < 4.3.3-3

  • debian•qemu

    < 1:2.5+dfsg-2 | < 1:2.5+dfsg-2 | < 1:2.5+dfsg-2 | < 1:2.5+dfsg-2

  • debian•xen

    < 4.8.0~rc3-1 | < 4.8.0~rc3-1 | < 4.8.0~rc3-1 | < 4.8.0~rc3-1

  • ubuntu•linux

    < 3.13.0-74.118

  • ubuntu•linux-azure

    all

  • ubuntu•linux-azure-6.11

    all

  • ubuntu•linux-azure-fde

    all

  • ubuntu•linux-azure-fde-5.15

    < 5.15.0-1114.123~20.04.1

  • ubuntu•linux-bluefield

    all

  • ubuntu•linux-gcp

    all

  • ubuntu•linux-gcp-6.11

    all

  • ubuntu•linux-gke

    all

  • ubuntu•linux-gkeop

    all

  • ubuntu•linux-hwe

    all

  • ubuntu•linux-hwe-6.11

    all

  • ubuntu•linux-hwe-edge

    all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-lowlatency-hwe-6.11

    all

  • ubuntu•linux-lts-utopic

    < 3.16.0-57.77~14.04.1

  • ubuntu•linux-lts-vivid

    < 3.19.0-42.48~14.04.1

  • ubuntu•linux-lts-wily

    < 4.2.0-22.27~14.04.1

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-raspi2

    all

  • ubuntu•linux-realtime

    all | all

  • ubuntu•linux-riscv

    all | all | all

  • ubuntu•qemu

    < 2.0.0+dfsg-2ubuntu1.22 | < 1:2.5+dfsg-1ubuntu5

  • ubuntu•xen

    < 4.4.2-0ubuntu0.14.04.4 | < 4.6.0-1ubuntu2

  • novell•suse_linux_enterprise_real_time_extension

    12:sp1

  • xen•xen

    na

References (24)