openEuler 20.03 LTS SP1 update for qemu



Published: 2023-08-06

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) 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

Description

The 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.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1

qemu-seabios: before 4.1.0-74

qemu-help: before 4.1.0-74

qemu-block-iscsi: before 4.1.0-74

qemu-img: before 4.1.0-74

qemu-debuginfo: before 4.1.0-74

qemu-block-rbd: before 4.1.0-74

qemu-block-curl: before 4.1.0-74

qemu-block-ssh: before 4.1.0-74

qemu-debugsource: before 4.1.0-74

qemu-guest-agent: before 4.1.0-74

qemu: before 4.1.0-74

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1472


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) 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

Description

The 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.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1

qemu-seabios: before 4.1.0-74

qemu-help: before 4.1.0-74

qemu-block-iscsi: before 4.1.0-74

qemu-img: before 4.1.0-74

qemu-debuginfo: before 4.1.0-74

qemu-block-rbd: before 4.1.0-74

qemu-block-curl: before 4.1.0-74

qemu-block-ssh: before 4.1.0-74

qemu-debugsource: before 4.1.0-74

qemu-guest-agent: before 4.1.0-74

qemu: before 4.1.0-74

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1472


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.



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