Red Hat Enterprise Linux 8 update for glib2 and ibus

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU21199

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-2019-14822

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 iBus does not check user privileges when allowing connection to the AF_UNIX socket. A local user can connect to an existing AF_UNIX socket and perform arbitrary actions, such read and send messages on behalf of another user connected on a graphical environment. 

Mitigation

Install updates from vendor's website.

Vulnerable software versions

glib2 (Red Hat package): 2.56.4-7.el8

Red Hat Enterprise Linux for x86_64: 8.0

CPE2.3

• cpe:2.3:o:red_hat:glib2_redhat_package:2.56.4-7.el8:*:*:*:*:red_hat_enterprise_linux:*:
• cpe:2.3:o:red_hat:red_hat_enterprise_linux:8.0:*:*:*:*:*:*:

External links

http://access.redhat.com/errata/RHSA-2020:1880

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.