openEuler 20.03 LTS SP1 update for qemu



Published: 2021-06-22
Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2021-3546
CVE-2021-3545
CVE-2021-3544
CWE-ID CWE-787
CWE-200
CWE-401
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		openEuler
Operating systems & Components / Operating system

qemu-seabios
Operating systems & Components / Operating system package or component

qemu-help
Operating systems & Components / Operating system package or component

qemu-debugsource
Operating systems & Components / Operating system package or component

qemu-block-iscsi
Operating systems & Components / Operating system package or component

qemu-block-rbd
Operating systems & Components / Operating system package or component

qemu-block-ssh
Operating systems & Components / Operating system package or component

qemu-img
Operating systems & Components / Operating system package or component

qemu-debuginfo
Operating systems & Components / Operating system package or component

qemu-guest-agent
Operating systems & Components / Operating system package or component

qemu
Operating systems & Components / Operating system package or component

Vendor openEuler

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU53681

Risk: Medium

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

CVE-ID: CVE-2021-3546

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote user to escalate privileges on the system.

The vulnerability exists due to a boundary error when processing untrusted input within the virgl_cmd_get_capset() function in vhost-user-gpu/virgl.c. A remote authenticated user of the guest operating system can trigger an out-of-bounds write and escalate privileges.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1

qemu-seabios: before 4.1.0-48

qemu-help: before 4.1.0-48

qemu-debugsource: before 4.1.0-48

qemu-block-iscsi: before 4.1.0-48

qemu-block-rbd: before 4.1.0-48

qemu-block-ssh: before 4.1.0-48

qemu-img: before 4.1.0-48

qemu-debuginfo: before 4.1.0-48

qemu-guest-agent: before 4.1.0-48

qemu: before 4.1.0-48

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1227


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.

2) Information disclosure

EUVDB-ID: #VU53680

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3545

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to potentially sensitive information.

The vulnerability exists due to uninitialized memory disclosure within the virgl_cmd_get_capset_info() function in vhost-user-gpu/virgl.c. A remote authenticated user of the guest operating system can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1

qemu-seabios: before 4.1.0-48

qemu-help: before 4.1.0-48

qemu-debugsource: before 4.1.0-48

qemu-block-iscsi: before 4.1.0-48

qemu-block-rbd: before 4.1.0-48

qemu-block-ssh: before 4.1.0-48

qemu-img: before 4.1.0-48

qemu-debuginfo: before 4.1.0-48

qemu-guest-agent: before 4.1.0-48

qemu: before 4.1.0-48

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1227


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.

3) Memory leak

EUVDB-ID: #VU53679

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-2021-3544

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote user to perform DoS attack on the target system.

The vulnerability exists due to multiple memory leaks in the vhost-user-gpu/vhost-user-gpu.c. A remote authenticated user of the guest operating system can force the application to leak memory and perform denial of service attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1

qemu-seabios: before 4.1.0-48

qemu-help: before 4.1.0-48

qemu-debugsource: before 4.1.0-48

qemu-block-iscsi: before 4.1.0-48

qemu-block-rbd: before 4.1.0-48

qemu-block-ssh: before 4.1.0-48

qemu-img: before 4.1.0-48

qemu-debuginfo: before 4.1.0-48

qemu-guest-agent: before 4.1.0-48

qemu: before 4.1.0-48

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1227


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.



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