CVE-2020-27661 Information

Description

A divide-by-zero issue was found in dwc2_handle_packet in hw/usb/hcd-dwc2.c in the hcd-dwc2 USB host controller emulation of QEMU. A malicious guest could use this flaw to crash the QEMU process on the host resulting in a denial of service.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Reference

https://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1770368.html https://lists.nongnu.org/archive/html/qemu-devel/2020-10/msg04263.html https://bugzilla.redhat.com/show_bug.cgi?id=1890653 https://git.qemu.org/?p=qemu.git;a=commit;h=bea2a9e3e00b275dc40cfa09c760c715b8753e03 https://security.netapp.com/advisory/ntap-20210720-0010/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5