openEuler update for qemu

1) Use-after-free

EUVDB-ID: #VU72308

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-1050

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a malicious guest to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the QEMU implementation of VMWare's paravirtual RDMA device. A specially crafted driver on a malicious guest can execute HW commands when shared buffers are not yet allocated, trigger a use-after-free error and execute arbitrary code on the QEMU host.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS SP1

qemu-seabios: before 4.1.0-73

qemu-help: before 4.1.0-73

qemu-debuginfo: before 4.1.0-73

qemu-guest-agent: before 4.1.0-73

qemu-block-curl: before 4.1.0-73

qemu-debugsource: before 4.1.0-73

qemu-img: before 4.1.0-73

qemu-block-iscsi: before 4.1.0-73

qemu-block-ssh: before 4.1.0-73

qemu-block-rbd: before 4.1.0-73

qemu: before 4.1.0-73

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1298

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.

Is there known malware, which exploits this vulnerability?

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