openEuler 22.03 LTS update for qemu

1) Integer underflow

EUVDB-ID: #VU72307

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-3165

CWE-ID: CWE-191 - Integer underflow

Exploit availability: No

Description

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

The vulnerability exists due to integer underflow in the QEMU VNC server while processing ClientCutText messages in the extended format. A remote client can send a specially crafted payload message to the VNC server and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS

qemu-seabios: before 6.2.0-53

qemu-help: before 6.2.0-53

qemu-block-curl: before 6.2.0-53

qemu-system-aarch64: before 6.2.0-53

qemu-guest-agent: before 6.2.0-53

qemu-block-ssh: before 6.2.0-53

qemu-block-rbd: before 6.2.0-53

qemu-system-x86_64: before 6.2.0-53

qemu-img: before 6.2.0-53

qemu-system-arm: before 6.2.0-53

qemu-hw-usb-host: before 6.2.0-53

qemu-system-riscv: before 6.2.0-53

qemu-debugsource: before 6.2.0-53

qemu-block-iscsi: before 6.2.0-53

qemu-debuginfo: before 6.2.0-53

qemu: before 6.2.0-53

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-2024

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.