SUSE update for flatpak

Published: 2022-09-15

Risk	Medium
Patch available	YES
Number of vulnerabilities	3
CVE-ID	CVE-2021-21261 CVE-2021-41133 CVE-2021-43860
CWE-ID	CWE-94 CWE-264
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	SUSE Linux Enterprise Server for SAP Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing Operating systems & Components / Operating system SUSE Enterprise Storage Operating systems & Components / Operating system SUSE CaaS Platform Operating systems & Components / Operating system SUSE Linux Enterprise Server Operating systems & Components / Operating system typelib-1_0-Flatpak-1_0 Operating systems & Components / Operating system package or component libflatpak0-debuginfo Operating systems & Components / Operating system package or component libflatpak0 Operating systems & Components / Operating system package or component flatpak-zsh-completion Operating systems & Components / Operating system package or component flatpak-devel Operating systems & Components / Operating system package or component flatpak-debugsource Operating systems & Components / Operating system package or component flatpak-debuginfo Operating systems & Components / Operating system package or component flatpak Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Code Injection

EUVDB-ID: #VU49587

Risk: Low

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-2021-21261

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a local application to elevate privileges on the system.

The vulnerability exists due to improper input validation when processing environment variables, passed from a sandboxed process to a non-sandboxed process on the host system, and in particular to the `flatpak run` command that is used to launch the new sandbox instance. A malicious or compromised Flatpak app can set environment variables that are trusted by the `flatpak run` command, and use them to execute arbitrary code that is not in a sandbox.

Mitigation

Update the affected package flatpak to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP: 15-SP1

SUSE Linux Enterprise High Performance Computing: 15-SP1-ESPOS - 15-SP1-LTSS

SUSE Enterprise Storage: 6

SUSE CaaS Platform: 4.0

SUSE Linux Enterprise Server: 15-SP1-BCL - 15-SP1-LTSS

typelib-1_0-Flatpak-1_0: before 1.2.3-150100.4.8.1

libflatpak0-debuginfo: before 1.2.3-150100.4.8.1

libflatpak0: before 1.2.3-150100.4.8.1

flatpak-zsh-completion: before 1.2.3-150100.4.8.1

flatpak-devel: before 1.2.3-150100.4.8.1

flatpak-debugsource: before 1.2.3-150100.4.8.1

flatpak-debuginfo: before 1.2.3-150100.4.8.1

flatpak: before 1.2.3-150100.4.8.1

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20223284-1/

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) Security restrictins bypass

EUVDB-ID: #VU57176

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-2021-41133

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 VFS-manipulating syscalls implementation. A local user can bypass sandbox restrictions and escalate privileges on the system.

Mitigation

Update the affected package flatpak to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP: 15-SP1

SUSE Linux Enterprise High Performance Computing: 15-SP1-ESPOS - 15-SP1-LTSS

SUSE Enterprise Storage: 6

SUSE CaaS Platform: 4.0

SUSE Linux Enterprise Server: 15-SP1-BCL - 15-SP1-LTSS

typelib-1_0-Flatpak-1_0: before 1.2.3-150100.4.8.1

libflatpak0-debuginfo: before 1.2.3-150100.4.8.1

libflatpak0: before 1.2.3-150100.4.8.1

flatpak-zsh-completion: before 1.2.3-150100.4.8.1

flatpak-devel: before 1.2.3-150100.4.8.1

flatpak-debugsource: before 1.2.3-150100.4.8.1

flatpak-debuginfo: before 1.2.3-150100.4.8.1

flatpak: before 1.2.3-150100.4.8.1

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20223284-1/

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.

3) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU59654

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-43860

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly validate that the permissions displayed to the user for an app at install time match the actual permissions granted to the app at runtime, which leads to security restrictions bypass and privilege escalation.

Mitigation

Update the affected package flatpak to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP: 15-SP1

SUSE Linux Enterprise High Performance Computing: 15-SP1-ESPOS - 15-SP1-LTSS

SUSE Enterprise Storage: 6

SUSE CaaS Platform: 4.0

SUSE Linux Enterprise Server: 15-SP1-BCL - 15-SP1-LTSS

typelib-1_0-Flatpak-1_0: before 1.2.3-150100.4.8.1

libflatpak0-debuginfo: before 1.2.3-150100.4.8.1

libflatpak0: before 1.2.3-150100.4.8.1

flatpak-zsh-completion: before 1.2.3-150100.4.8.1

flatpak-devel: before 1.2.3-150100.4.8.1

flatpak-debugsource: before 1.2.3-150100.4.8.1

flatpak-debuginfo: before 1.2.3-150100.4.8.1

flatpak: before 1.2.3-150100.4.8.1

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20223284-1/

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.