Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-3507 |
CWE-ID | CWE-122 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
QEMU Client/Desktop applications / Virtualization software |
Vendor | QEMU |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU64569
Risk: Medium
CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-3507
CWE-ID:
CWE-122 - Heap-based Buffer Overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the fdctrl_transfer_handler() function in hw/block/fdc.c while processing DMA read
data transfers from the floppy drive to the guest system. A remote privileged user on the guest OS can trigger a heap-based buffer overflow and crash the QEMU process on the host OS.
Install updates from vendor's website.
Vulnerable software versionsQEMU: 4.0.0 - 6.0.0
External linkshttp://bugzilla.redhat.com/show_bug.cgi?id=1951118
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to open a a specially crafted file.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.