CVE-2021-3713 — Out-of-bounds Write in Qemu
Severity
7.4HIGHNVD
OSV6.5
EPSS
0.0%
top 90.47%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedAug 25
Latest updateMay 24
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.
CVSS vector
CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HExploitability: 0.7 | Impact: 6.0
Affected Packages11 packages
Also affects: Debian Linux 10.0, 11.0, 9.0
Patches
🔴Vulnerability Details
3📋Vendor Advisories
4Microsoft▶
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 ↗2021-08-10
Debian▶
CVE-2021-3713: qemu - An out-of-bounds write flaw was found in the UAS (USB Attached SCSI) device emul...↗2021