CVE-2017-2620

Advisory lineage Upstream: 0 Downstream: 32
Modified
Published: 27 Jul 2018, 19:00
Last modified:05 Aug 2024, 14:02

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.9 CRITICAL
v3.0 (nvd)
EPSS Score
2.41% LOW
2% probability -0.13%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

27 Jul 2018, 19:00
Published
Vulnerability first disclosed
05 Aug 2024, 14:02
Last Modified
Vulnerability information updated

Description

Quick emulator (QEMU) before 2.8 built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process.

CVSS Metrics

  • v3.0•MEDIUM•Score: 5.5CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
  • v3.0•CRITICAL•Score: 9.9CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • v2.0•HIGH•Score: 9AV:N/AC:L/Au:S/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 2.41%• Percentile: 85%

Techniques & Countermeasures

  • CWE-125•Out-of-bounds Read

    The product reads data past the end, or before the beginning, of the intended buffer.

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • citrix•xenserver

    6.0.2 | 6.2.0:sp1 | 6.5:sp1 | 7.0 | 7.1

  • debian•debian_linux

    7.0

  • qemu•qemu

    < 2.8.0

  • qemu•qemu:

    2.8

  • redhat•enterprise_linux_desktop

    6.0 | 7.0

  • redhat•enterprise_linux_server

    6.0 | 7.0

  • redhat•enterprise_linux_server_aus

    7.3 | 7.4

  • redhat•enterprise_linux_server_eus

    7.3 | 7.4 | 7.5

  • redhat•enterprise_linux_workstation

    6.0 | 7.0

  • redhat•openstack

    5.0 | 6.0 | 7.0 | 8 | 9 | 10

  • xen•xen

    ≤ 4.7.1 | 4.7.1:r1 | 4.7.1:r2 | 4.7.1:r3 | 4.7.1:r4 | 4.7.1:r5 | 4.7.1:r6 | 4.7.1:r7

References (23)