CVE-2021-3713
7.4
HIGH
CVSS 3.1
EPSS 0.10%
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.
How to fix CVE-2021-3713
To remediate CVE-2021-3713, upgrade the affected package to a fixed version below.
- —upgrade to 1:5.2+dfsg-11+deb11u1 or later
Is CVE-2021-3713 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1:5.2+dfsg-11+deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.4 | CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |