Red Hat update for PackageKit

1) Improper authentication

EUVDB-ID: #VU12144

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C]

CVE-ID: CVE-2018-1106

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a local attacker to bypass security restrictions on the target system.

The weakness exists in the pk_transaction_authorize_actions_finished_cb function in the pk-transaction.c source code file due to improper authentication restrictions. A local attacker can bypass authentication and install signed packages on the system without authorization. 

Mitigation

Install update from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux Server: 7 - 7.5

Red Hat Enterprise Linux for IBM z Systems: 7 - 7.5

Red Hat Enterprise Linux for Scientific Computing: 7

Red Hat Enterprise Linux EUS Compute Node: 7.5

Red Hat Enterprise Linux for Power: 7 - 9

Red Hat Enterprise Linux Desktop: 7

Red Hat Enterprise Linux Workstation: 7

External links

http://access.redhat.com/errata/RHSA-2018:1224

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.