Integer overflow in QEMU

1) Integer overflow

EUVDB-ID: #VU72299

Risk: Medium

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/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-2022-4172

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.

The vulnerability exists due to integer overflow within the read_erst_record() and write_erst_record() functions in the ACPI Error Record Serialization Table (ERST) device of QEMU. A malicious guest can overrun the host buffer allocated for the ERST memory device and crash the QEMU process on the host.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

QEMU: 7.0.0

CPE2.3

• cpe:2.3:a:qemu:qemu:7.0.0:*:*:*:*:*:*:*

External links

https://gitlab.com/qemu-project/qemu/-/commit/defb7098
https://gitlab.com/qemu-project/qemu/-/issues/1268
https://lore.kernel.org/qemu-devel/20221024154233.1043347-1-lk@c--e.de/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O/
https://security.netapp.com/advisory/ntap-20230127-0013/

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.