CVE-2021-3713
Last modified
CVE-2021-3713 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. 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. EPSS estimates a 0.57% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Qemu | Qemu | <= 6.1.0 |
| Debian | Debian Linux | 9.0 |
| Debian | Debian Linux | 10.0 |
| Debian | Debian Linux | 11.0 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1994640Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/09/msg00000.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202208-27Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210923-0006/Third Party Advisory
- https://www.debian.org/security/2021/dsa-4980Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1994640Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/09/msg00000.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202208-27Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210923-0006/Third Party Advisory
- https://www.debian.org/security/2021/dsa-4980Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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