CVE-2021-3713
Debian Security Advisory 4980-1
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
Se ha detectado un fallo de escritura fuera de límites en la emulación del dispositivo UAS (USB Attached SCSI) de QEMU en versiones anteriores a 6.2.0-rc0. El dispositivo usa el número de flujo suministrado por el huésped sin comprobar, lo que puede conllevar a un acceso fuera de límites a los campos UASDevice-)data3 y UASDevice-)status3. Un usuario invitado malicioso podría usar este fallo para bloquear QEMU o lograr potencialmente una ejecución de código con los privilegios del proceso QEMU en el host.
Gaoning Pan discovered that QEMU incorrectly handled the floppy disk emulator. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. Gaoning Pan discovered that the QEMU vmxnet3 NIC emulator incorrectly handled certain values. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. It was discovered that the QEMU vhost-user GPU device contained several security issues. An attacker inside the guest could use these issues to cause QEMU to crash, resulting in a denial of service, leak sensitive information, or possibly execute arbitrary code. This issue only affected Ubuntu 21.10.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2021-08-17 CVE Reserved
- 2021-08-25 CVE Published
- 2024-08-03 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-787: Out-of-bounds Write
CAPEC
References (6)
URL | Tag | Source |
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https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html | Mailing List |
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https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html | Mailing List |
|
https://security.netapp.com/advisory/ntap-20210923-0006 | Third Party Advisory |
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URL | Date | SRC |
---|
URL | Date | SRC |
---|---|---|
https://bugzilla.redhat.com/show_bug.cgi?id=1994640 | 2022-10-25 |
URL | Date | SRC |
---|---|---|
https://security.gentoo.org/glsa/202208-27 | 2022-10-25 | |
https://www.debian.org/security/2021/dsa-4980 | 2022-10-25 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Qemu Search vendor "Qemu" | Qemu Search vendor "Qemu" for product "Qemu" | <= 6.1.0 Search vendor "Qemu" for product "Qemu" and version " <= 6.1.0" | - |
Affected
| ||||||
Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
| ||||||
Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0" | - |
Affected
| ||||||
Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0" | - |
Affected
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