openEuler 20.03 LTS SP1 update for polkit

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU53837

Risk: Low

CVSSv3.1: 7.5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2021-3560

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

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 in the "polkit_system_bus_name_get_creds_sync" function, which leads to security restrictions bypass and privilege escalation.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1

polkit-help: before 0.116-7

polkit-libs: before 0.116-7

polkit-debugsource: before 0.116-7

polkit-devel: before 0.116-7

polkit-debuginfo: before 0.116-7

polkit: before 0.116-7

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1230

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?

Yes. This vulnerability is being exploited in the wild.