CVE-2021-3507
QEMU Floppy Disk Emulator Heap Buffer Overflow
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.
INFO
Published Date :
May 6, 2021, 4:15 p.m.
Last Modified :
Feb. 12, 2023, 11:41 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
4.2
Exploitability Score :
1.8
Affected Products
The following products are affected by CVE-2021-3507
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-3507.
| URL | Resource |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1951118 | Exploit Issue Tracking Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210528-0005/ | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-3507 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-3507 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 12, 2023
Action Type Old Value New Value Changed Description 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. 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. Removed CVSS V3.1 Red Hat, Inc. AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:L Removed Reference https://access.redhat.com/errata/RHSA-2022:7472 [No Types Assigned] Removed Reference https://access.redhat.com/errata/RHSA-2022:7967 [No Types Assigned] Removed Reference https://access.redhat.com/security/cve/CVE-2021-3507 [No Types Assigned] Added CWE Red Hat, Inc. CWE-119 -
CVE Modified by [email protected]
Feb. 02, 2023
Action Type Old Value New Value Changed 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. 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. Added CVSS V3.1 Red Hat, Inc. AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:L Added Reference https://access.redhat.com/errata/RHSA-2022:7967 [No Types Assigned] Added Reference https://access.redhat.com/security/cve/CVE-2021-3507 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2022:7472 [No Types Assigned] Removed CWE Red Hat, Inc. CWE-119 Removed CWE Reason CWE-119 / More specific CWE option available -
Modified Analysis by [email protected]
Oct. 07, 2022
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html Mailing List, Third Party Advisory Added CWE NIST CWE-787 Changed CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:* OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:* -
CVE Modified by [email protected]
Sep. 05, 2022
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html [No Types Assigned] -
Modified Analysis by [email protected]
Jun. 01, 2021
Action Type Old Value New Value Changed Reference Type https://security.netapp.com/advisory/ntap-20210528-0005/ No Types Assigned https://security.netapp.com/advisory/ntap-20210528-0005/ Third Party Advisory -
CVE Modified by [email protected]
May. 28, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20210528-0005/ [No Types Assigned] -
Initial Analysis by [email protected]
May. 17, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:N/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1951118 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1951118 Exploit, Issue Tracking, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* versions up to (including) 6.0.0 Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-3507 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-3507
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.07 }} 0.02%
score
0.27201
percentile