SUSE update for containerd, docker

Published: 2022-01-27 | Updated: 2023-05-04

Risk	Medium
Patch available	YES
Number of vulnerabilities	5
CVE-ID	CVE-2021-41089 CVE-2021-41091 CVE-2021-41092 CVE-2021-41103 CVE-2021-41190
CWE-ID	CWE-281 CWE-200 CWE-276 CWE-843
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #2 is available.
Vulnerable software Subscribe	SUSE Linux Enterprise Module for Containers Operating systems & Components / Operating system docker-debuginfo Operating systems & Components / Operating system package or component docker Operating systems & Components / Operating system package or component containerd Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 5 vulnerabilities.

1) Improper Preservation of Permissions

EUVDB-ID: #VU64415

Risk: Low

CVSSv3.1: 5.5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-41089

CWE-ID: CWE-281 - Improper preservation of permissions

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly impose security restrictions, which leads to security restrictions bypass and privilege escalation.

Mitigation

Update the affected package containerd, docker to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Containers: 12

docker-debuginfo: before 20.10.12_ce-98.75.1

docker: before 20.10.12_ce-98.75.1

containerd: before 1.4.12-16.49.1

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220213-1/

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 Preservation of Permissions

EUVDB-ID: #VU64416

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:P/RL:O/RC:C]

CVE-ID: CVE-2021-41091

CWE-ID: CWE-281 - Improper preservation of permissions

Exploit availability: Yes

Description

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

The vulnerability exists due to application does not properly impose security restrictions, which leads to security restrictions bypass and privilege escalation.

Mitigation

Update the affected package containerd, docker to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Containers: 12

docker-debuginfo: before 20.10.12_ce-98.75.1

docker: before 20.10.12_ce-98.75.1

containerd: before 1.4.12-16.49.1

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220213-1/

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. However, proof of concept for this vulnerability is available.

3) Information disclosure

EUVDB-ID: #VU64417

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-41092

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

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

The vulnerability exists due to excessive data output by the application. A remote attacker can gain unauthorized access to sensitive information on the system.

Mitigation

Update the affected package containerd, docker to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Containers: 12

docker-debuginfo: before 20.10.12_ce-98.75.1

docker: before 20.10.12_ce-98.75.1

containerd: before 1.4.12-16.49.1

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220213-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

4) Incorrect default permissions

EUVDB-ID: #VU57038

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-2021-41103

CWE-ID: CWE-276 - Incorrect Default Permissions

Exploit availability: No

Description

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

The vulnerability exists due to incorrect default permissions for container root directories and some plugins. When the UID of an unprivileged Linux user on the host collided with the file owner or group inside a container, the unprivileged Linux user on the host can discover, read, and modify those files.

Mitigation

Update the affected package containerd, docker to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Containers: 12

docker-debuginfo: before 20.10.12_ce-98.75.1

docker: before 20.10.12_ce-98.75.1

containerd: before 1.4.12-16.49.1

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220213-1/

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) Type Confusion

EUVDB-ID: #VU58229

Risk: Low

CVSSv3.1: 2.6 [CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-41190

CWE-ID: CWE-843 - Type confusion

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the system.

The vulnerability exists due to a type confusion error. A remote authenticated attacker can pass specially crafted data to the application, trigger a type confusion error and interpret the resulting content differently.

Mitigation

Update the affected package containerd, docker to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Containers: 12

docker-debuginfo: before 20.10.12_ce-98.75.1

docker: before 20.10.12_ce-98.75.1

containerd: before 1.4.12-16.49.1

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220213-1/

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.