VDB
CVE-2021-3507
CVE-2021-3507
PUBLISHED
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.
EPSS 0.03% · 8.9th percentile
Risk Scores
EPSS Score
0.03%
8.9th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:Pro:14.04:LTS | qemu | 1.7.0+dfsg-2ubuntu8, 1.6.0+dfsg-2ubuntu3, 1.6.0+dfsg-2ubuntu4 |
| Ubuntu:22.04:LTS | qemu | 1:6.0+dfsg-2expubuntu2, 1:6.0+dfsg-2expubuntu4, 0 |
| Ubuntu:18.04:LTS | qemu | *, 1:2.10+dfsg-0ubuntu3, 1:2.10+dfsg-0ubuntu4 |
| Ubuntu:20.04:LTS | qemu | 1:4.2-3ubuntu6.8, 1:4.2-3ubuntu6.10, 1:4.2-3ubuntu6.11 |
| Ubuntu:Pro:16.04:LTS | qemu | 1:2.5+dfsg-5ubuntu10.47, 1:2.5+dfsg-5ubuntu10.46, 1:2.5+dfsg-5ubuntu10.45 |
Timeline
- Apr 19, 2021 CVE Published
- May 7, 2021 EPSS Score
- Jul 10, 2021 EPSS Score
- Sep 10, 2021 EPSS Score
- Nov 11, 2021 EPSS Score
- Jan 11, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 14, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 15, 2022 EPSS Score
- Jul 17, 2022 EPSS Score
- Sep 17, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2021-3507 third-party-advisory
- https://ubuntu.com/security/notices/USN-5489-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2021-3507 third-party-advisory