openEuler update for flatpak

1) 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

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 20.03 LTS SP3

flatpak-help: before 1.0.3-10

flatpak-debuginfo: before 1.0.3-10

flatpak-devel: before 1.0.3-10

flatpak-debugsource: before 1.0.3-10

flatpak: before 1.0.3-10

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1520

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.