CVE-2020-14364

MEDIUM

Qemu < 5.2.0 - Out-of-Bounds Write

Title source: rule
STIX 2.1

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.

Exploits (2)

nomisec WORKING POC 2 stars
by gejian-iscas · poc
https://github.com/gejian-iscas/CVE-2020-14364
nomisec WORKING POC 1 stars
by y-f00l · poc
https://github.com/y-f00l/CVE-2020-14364

References (12)

Core 12
Core References
Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1869201
Mailing List, Third Party Advisory x_refsource_misc
https://www.openwall.com/lists/oss-security/2020/08/24/3
Mailing List, Third Party Advisory x_refsource_misc
https://www.openwall.com/lists/oss-security/2020/08/24/2
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2020/dsa-4760
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/09/msg00013.html
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4511-1/
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20200924-0006/
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202009-14
Broken Link, Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.html
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202011-09

Scores

CVSS v3 5.0
EPSS 0.1319
EPSS Percentile 94.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L

Details

CWE
CWE-125 CWE-787
Status published
Products (14)
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 20.04
debian/debian_linux 9.0
debian/debian_linux 10.0
fedoraproject/fedora 31
fedoraproject/fedora 32
opensuse/leap 15.2
qemu/qemu < 5.2.0
redhat/enterprise_linux 6.0
... and 4 more
Published Aug 31, 2020
Tracked Since Feb 18, 2026