CVE-2021-3713

high

Description

An out-of-bounds write flaw was found in the UAS (USB Attached SCSI) device emulation of QEMU in versions prior to 6.2.0-rc0. The device uses the guest supplied stream number unchecked, which can lead to out-of-bounds access to the UASDevice->data3 and UASDevice->status3 fields. A malicious guest user could use this flaw to crash QEMU or potentially achieve code execution with the privileges of the QEMU process on the host.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1994640

https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html

https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html

https://security.gentoo.org/glsa/202208-27

https://security.netapp.com/advisory/ntap-20210923-0006/

https://www.debian.org/security/2021/dsa-4980

Details

Source: Mitre, NVD

Published: 2021-08-25

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 7.4

Vector: CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Severity: High