Vulnerability identifier: #VU54317
Vulnerability 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:
CWE-ID:
CWE-125
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
QEMU
Client/Desktop applications /
Virtualization software
Vendor: QEMU
Description
The vulnerability allows a local user to perform DoS attack.
The vulnerability exists due to an out-of-bounds heap buffer access in the ARM Generic Interrupt Controller emulator of QEMU. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
QEMU: 4.0.0 - 4.2.0
External links
http://lists.debian.org/debian-lts-announce/2021/02/msg00024.html
http://bugzilla.redhat.com/show_bug.cgi?id=1924601
http://www.openwall.com/lists/oss-security/2021/02/05/1
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.