openEuler 22.03 LTS update for qemu
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
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
DescriptionThe 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.
Install updates from vendor's repository.
Vulnerable software versionsopenEuler: 22.03 LTS
qemu-seabios: before 6.2.0-72
qemu-help: before 6.2.0-72
qemu-system-arm: before 6.2.0-72
qemu-img: before 6.2.0-72
qemu-block-ssh: before 6.2.0-72
qemu-debuginfo: before 6.2.0-72
qemu-block-curl: before 6.2.0-72
qemu-hw-usb-host: before 6.2.0-72
qemu-block-rbd: before 6.2.0-72
qemu-debugsource: before 6.2.0-72
qemu-block-iscsi: before 6.2.0-72
qemu-system-aarch64: before 6.2.0-72
qemu-system-x86_64: before 6.2.0-72
qemu-guest-agent: before 6.2.0-72
qemu-system-riscv: before 6.2.0-72
qemu: before 6.2.0-72
External linkshttp://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1474
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.
2) Improper Privilege Management
EUVDB-ID: #VU79697
Risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-0664
CWE-ID:
CWE-269 - Improper Privilege Management
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper privilege management in the QEMU Guest Agent service for Windows. A local user can manipulate the QEMU Guest Agent's Windows installer via repair custom action and escalate privileges on the system.
MitigationInstall updates from vendor's repository.
Vulnerable software versionsopenEuler: 22.03 LTS
qemu-seabios: before 6.2.0-72
qemu-help: before 6.2.0-72
qemu-system-arm: before 6.2.0-72
qemu-img: before 6.2.0-72
qemu-block-ssh: before 6.2.0-72
qemu-debuginfo: before 6.2.0-72
qemu-block-curl: before 6.2.0-72
qemu-hw-usb-host: before 6.2.0-72
qemu-block-rbd: before 6.2.0-72
qemu-debugsource: before 6.2.0-72
qemu-block-iscsi: before 6.2.0-72
qemu-system-aarch64: before 6.2.0-72
qemu-system-x86_64: before 6.2.0-72
qemu-guest-agent: before 6.2.0-72
qemu-system-riscv: before 6.2.0-72
qemu: before 6.2.0-72
External linkshttp://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1474
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.
3) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU78780
Risk: Low
CVSSv3.1: 6.2 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-2861
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to an error in the 9p passthrough filesystem (9pfs) implementation in QEMU. A local user can escape from the exported 9p tree by creating and opening a device file in the shared folder.
Install updates from vendor's repository.
Vulnerable software versionsopenEuler: 22.03 LTS
qemu-seabios: before 6.2.0-72
qemu-help: before 6.2.0-72
qemu-system-arm: before 6.2.0-72
qemu-img: before 6.2.0-72
qemu-block-ssh: before 6.2.0-72
qemu-debuginfo: before 6.2.0-72
qemu-block-curl: before 6.2.0-72
qemu-hw-usb-host: before 6.2.0-72
qemu-block-rbd: before 6.2.0-72
qemu-debugsource: before 6.2.0-72
qemu-block-iscsi: before 6.2.0-72
qemu-system-aarch64: before 6.2.0-72
qemu-system-x86_64: before 6.2.0-72
qemu-guest-agent: before 6.2.0-72
qemu-system-riscv: before 6.2.0-72
qemu: before 6.2.0-72
External linkshttp://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1474
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.
