Denial of service in QEMU

1) Use-after-free

EUVDB-ID: #VU85734

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-3019

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error within the e1000e_write_packet_to_guest() function in the e1000e NIC emulation code in QEMU. A local user can trigger DMA reentrancy and crash the QEMU process on the host.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

QEMU: All versions

External links

http://access.redhat.com/security/cve/CVE-2023-3019
http://bugzilla.redhat.com/show_bug.cgi?id=2222351
http://security.netapp.com/advisory/ntap-20230831-0005/
http://access.redhat.com/errata/RHSA-2024:0135

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted file.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.