CVE-2021-3507
QEMU: fdc: heap buffer overflow in DMA read data transfers
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
1Exploited in Wild
-Decision
Descriptions
A heap buffer overflow was found in the floppy disk emulator of QEMU up to 6.0.0 (including). It could occur in fdctrl_transfer_handler() in hw/block/fdc.c while processing DMA read data transfers from the floppy drive to the guest system. A privileged guest user could use this flaw to crash the QEMU process on the host resulting in DoS scenario, or potential information leakage from the host memory.
Se encontró un desbordamiento del búfer de pila en el emulador de disquete de QEMU versiones hasta 6.0.0 (incluyéndola). Podría ocurrir en la función fdctrl_transfer_handler() en el archivo hw/block/fdc.c mientras son procesados transferencias de datos de lectura DMA desde la unidad de disquete al sistema invitado. Un usuario invitado privilegiado podría usar este fallo para bloquear el proceso QEMU en el host, resultando en un escenario de DoS o una posible filtración de información de la memoria del host
A heap buffer overflow was found in the floppy disk emulator of QEMU. It could occur in fdctrl_transfer_handler() in hw/block/fdc.c while processing DMA read data transfers from the floppy drive to the guest system. A privileged guest user could use this flaw to crash the QEMU process on the host resulting in DoS scenario, or potential information leakage from the host memory.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2021-04-19 CVE Reserved
- 2021-05-06 CVE Published
- 2023-07-29 EPSS Updated
- 2024-08-03 CVE Updated
- 2024-08-03 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
- CWE-787: Out-of-bounds Write
CAPEC
References (4)
URL | Tag | Source |
---|---|---|
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html | Mailing List | |
https://security.netapp.com/advisory/ntap-20210528-0005 | Third Party Advisory |
URL | Date | SRC |
---|---|---|
https://bugzilla.redhat.com/show_bug.cgi?id=1951118 | 2024-08-03 |
URL | Date | SRC |
---|
URL | Date | SRC |
---|---|---|
https://access.redhat.com/security/cve/CVE-2021-3507 | 2022-11-15 |
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" | <= 6.0.0 Search vendor "Qemu" for product "Qemu" and version " <= 6.0.0" | - |
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
| ||||||
Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0" | - |
Affected
| ||||||
Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0" | advanced_virtualization |
Affected
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