Vulnerability Monitor

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CVE-2021-3507

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.

Published

2021-05-06T16:15:07.547

Last Modified

2024-11-21T06:21:42.607

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.1 (MEDIUM)

CVSSv2 Vector

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

  • Access Vector: LOCAL
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

3.9

Impact Score

4.9

Weaknesses
  • Type: Primary
    CWE-119
  • Type: Secondary
    CWE-787
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application qemu qemu ≤ 6.0.0 Yes
Operating System debian debian_linux 10.0 Yes
Operating System redhat enterprise_linux 8.0 Yes
Operating System redhat enterprise_linux 8.0 Yes
References