Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
High
Attack Vector
Local
0

CVE-2020-14364

Disclosure Date: August 31, 2020
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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.

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CVSS V3 Severity and Metrics
Base Score:
5.0 Medium
Impact Score:
3.7
Exploitability Score:
0.8
Vector:
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
Attack Vector (AV):
Local
Attack Complexity (AC):
High
Privileges Required (PR):
High
User Interaction (UI):
None
Scope (S):
Changed
Confidentiality (C):
Low
Integrity (I):
Low
Availability (A):
Low

General Information

Vendors

  • canonical,
  • debian,
  • fedoraproject,
  • opensuse,
  • qemu,
  • redhat

Products

  • debian linux 10.0,
  • debian linux 9.0,
  • enterprise linux 6.0,
  • enterprise linux 7.0,
  • enterprise linux 8.0,
  • fedora 31,
  • fedora 32,
  • leap 15.2,
  • openstack 10,
  • openstack 13,
  • qemu,
  • ubuntu linux 16.04,
  • ubuntu linux 18.04,
  • ubuntu linux 20.04

References

Additional Info

Technical Analysis