openEuler update for qemu



Risk High
Patch available YES
Number of vulnerabilities 6
CVE-ID CVE-2021-4206
CVE-2021-4207
CVE-2021-20196
CVE-2022-26353
CVE-2022-26354
CVE-2021-3748
CWE-ID CWE-190
CWE-362
CWE-476
CWE-416
CWE-404
Exploitation vector Local network
Public exploit N/A
Vulnerable software
 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-img
Operating systems & Components / Operating system package or component

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

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

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

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

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

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

qemu-block-curl
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 6 vulnerabilities.

1) Integer overflow

EUVDB-ID: #VU63787

Risk: Low

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-4206

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to integer overflow in the cursor_alloc() function in the QXL display device emulation in QEMU. A privileged user can crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

qemu-seabios: before 4.1.0-63

qemu-help: before 4.1.0-63

qemu-img: before 4.1.0-63

qemu-guest-agent: before 4.1.0-63

qemu-debugsource: before 4.1.0-63

qemu-debuginfo: before 4.1.0-63

qemu-block-ssh: before 4.1.0-63

qemu-block-rbd: before 4.1.0-63

qemu-block-iscsi: before 4.1.0-63

qemu-block-curl: before 4.1.0-63

qemu: before 4.1.0-63

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1662


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) Race condition

EUVDB-ID: #VU63788

Risk: Low

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-4207

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

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

The vulnerability exists due to a race condition in the QXL display device emulation in QEMU. A privileged user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

qemu-seabios: before 4.1.0-63

qemu-help: before 4.1.0-63

qemu-img: before 4.1.0-63

qemu-guest-agent: before 4.1.0-63

qemu-debugsource: before 4.1.0-63

qemu-debuginfo: before 4.1.0-63

qemu-block-ssh: before 4.1.0-63

qemu-block-rbd: before 4.1.0-63

qemu-block-iscsi: before 4.1.0-63

qemu-block-curl: before 4.1.0-63

qemu: before 4.1.0-63

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1662


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) NULL pointer dereference

EUVDB-ID: #VU63775

Risk: Low

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-20196

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error in the floppy disk emulator of QEMU. A privileged guest can trigger a NULL pointer dereference error and cause a denial of service. 

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

qemu-seabios: before 4.1.0-63

qemu-help: before 4.1.0-63

qemu-img: before 4.1.0-63

qemu-guest-agent: before 4.1.0-63

qemu-debugsource: before 4.1.0-63

qemu-debuginfo: before 4.1.0-63

qemu-block-ssh: before 4.1.0-63

qemu-block-rbd: before 4.1.0-63

qemu-block-iscsi: before 4.1.0-63

qemu-block-curl: before 4.1.0-63

qemu: before 4.1.0-63

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1662


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.

4) Use-after-free

EUVDB-ID: #VU63783

Risk: Low

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-26353

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the virtio-net device of QEMU. A privileged user can exploit this issue to crash QEMU or potentially execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

qemu-seabios: before 4.1.0-63

qemu-help: before 4.1.0-63

qemu-img: before 4.1.0-63

qemu-guest-agent: before 4.1.0-63

qemu-debugsource: before 4.1.0-63

qemu-debuginfo: before 4.1.0-63

qemu-block-ssh: before 4.1.0-63

qemu-block-rbd: before 4.1.0-63

qemu-block-iscsi: before 4.1.0-63

qemu-block-curl: before 4.1.0-63

qemu: before 4.1.0-63

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1662


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.

5) Improper Resource Shutdown or Release

EUVDB-ID: #VU63786

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-26354

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists in the vhost-vsock device of QEMU. A local user can trigger the error and gain access to sensitive information.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

qemu-seabios: before 4.1.0-63

qemu-help: before 4.1.0-63

qemu-img: before 4.1.0-63

qemu-guest-agent: before 4.1.0-63

qemu-debugsource: before 4.1.0-63

qemu-debuginfo: before 4.1.0-63

qemu-block-ssh: before 4.1.0-63

qemu-block-rbd: before 4.1.0-63

qemu-block-iscsi: before 4.1.0-63

qemu-block-curl: before 4.1.0-63

qemu: before 4.1.0-63

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1662


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.

6) Use-after-free

EUVDB-ID: #VU58813

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-3748

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote guest to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when in the virtio-net device of QEMU. A malicious guest can trigger the use-after-free error and execute arbitrary code on the host system with QEMU privileges.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

qemu-seabios: before 4.1.0-63

qemu-help: before 4.1.0-63

qemu-img: before 4.1.0-63

qemu-guest-agent: before 4.1.0-63

qemu-debugsource: before 4.1.0-63

qemu-debuginfo: before 4.1.0-63

qemu-block-ssh: before 4.1.0-63

qemu-block-rbd: before 4.1.0-63

qemu-block-iscsi: before 4.1.0-63

qemu-block-curl: before 4.1.0-63

qemu: before 4.1.0-63

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1662


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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



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