CVE-2020-14364

Advisory lineage Upstream: 0 Downstream: 55
Modified
Published: 31 Aug 2020, 17:11
Last modified:04 Aug 2024, 12:46

Vulnerability Summary

Overall Risk (default)
low
23/100
CVSS Score
5 MEDIUM
v3.1 (nvd)
EPSS Score
12.95% MEDIUM
13% probability +1.82%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

31 Aug 2020, 17:11
Published
Vulnerability first disclosed
04 Aug 2024, 12:46
Last Modified
Vulnerability information updated

Description

An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its 'data_buf[4096]' in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the privileges of the QEMU process on the host.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
  • v2.0•MEDIUM•Score: 4.4AV:L/AC:M/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 12.95%• Percentile: 94%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

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

  • CWE-125•Out-of-bounds Read

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

Affected Systems

  • canonical•ubuntu_linux

    16.04 | 18.04 | 20.04

  • debian•debian_linux

    9.0 | 10.0

  • fedoraproject•fedora

    31 | 32

  • opensuse•leap

    15.2

  • qemu•qemu

    < 5.2.0

  • redhat•enterprise_linux

    6.0 | 7.0 | 8.0

  • redhat•openstack

    10 | 13

References (12)