CVE-2021-3507

medium

Description

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.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1951118

https://security.netapp.com/advisory/ntap-20210528-0005/

https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html

Details

Source: MITRE

Published: 2021-05-06

Updated: 2023-02-12

Type: CWE-119

Risk Information

CVSS v2

Base Score: 3.6

Vector: AV:L/AC:L/Au:N/C:P/I:N/A:P

Impact Score: 4.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 6.1

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L

Impact Score: 4.2

Exploitability Score: 1.8

Severity: MEDIUM