#VU69352 Out-of-bounds write in QEMU - CVE-2021-3611
Vulnerability identifier: #VU69352
Vulnerability risk: Medium
CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-3611
CWE-ID:
CWE-787
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
QEMU
Client/Desktop applications /
Virtualization software
Vendor: QEMU
Description
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the Intel HD Audio device (intel-hda) of QEMU. A remote user of the guest OS trigger an out-of-bounds write and crash the QEMU process on the host.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
QEMU: 6.0.0 - 6.2.0
External links
https://bugzilla.redhat.com/show_bug.cgi?id=1973784
https://gitlab.com/qemu-project/qemu/-/issues/542
https://security.netapp.com/advisory/ntap-20220624-0001/
https://security.gentoo.org/glsa/202208-27
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
