Ubuntu update for nvidia-graphics-drivers-390

Published: 2021-05-04

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-1076 CVE-2021-1077
CWE-ID	CWE-284 CWE-763
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Ubuntu Operating systems & Components / Operating system xserver-xorg-video-nvidia-390 (Ubuntu package) Operating systems & Components / Operating system package or component xserver-xorg-video-nvidia-450-server (Ubuntu package) Operating systems & Components / Operating system package or component xserver-xorg-video-nvidia-460-server (Ubuntu package) Operating systems & Components / Operating system package or component xserver-xorg-video-nvidia-450 (Ubuntu package) Operating systems & Components / Operating system package or component xserver-xorg-video-nvidia-460 (Ubuntu package) Operating systems & Components / Operating system package or component xserver-xorg-video-nvidia-418-server (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper access control

EUVDB-ID: #VU52488

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1076

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a local user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in the kernel mode layer (nvlddmkm.sys or nvidia.ko). A local user can bypass implemented security restrictions, leading to denial of service, information disclosure or data corruption.

Mitigation

Update the affected package nvidia-graphics-drivers-390 to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 21.04

xserver-xorg-video-nvidia-390 (Ubuntu package): before 390.143-0ubuntu0.20.10.1

xserver-xorg-video-nvidia-450-server (Ubuntu package): before 450.119.03-0ubuntu1

xserver-xorg-video-nvidia-460-server (Ubuntu package): before 460.73.01-0ubuntu1

xserver-xorg-video-nvidia-450 (Ubuntu package): before 450.119.03-0ubuntu1

xserver-xorg-video-nvidia-460 (Ubuntu package): before 460.73.01-0ubuntu1

xserver-xorg-video-nvidia-418-server (Ubuntu package): before 418.197.02-0ubuntu1

External links

http://ubuntu.com/security/notices/USN-4935-1

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) Release of invalid pointer or reference

EUVDB-ID: #VU52489