CVE-2020-2656 Missing authorization in Solaris Operating System

Medium 4.4 Published 15 Jan 2020 Updated 30 Sep 2024

A low-privileged attacker with local access can read and modify a subset of Oracle Solaris data due to insufficient authorization checks in the X Window System.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-2656?

CVE-2020-2656 is a medium-severity missing authorization vulnerability in Oracle Solaris, published on 15 Jan 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Vulnerability in the Oracle Solaris product of Oracle Systems (component: X Window System). Supported versions that are affected are 10 and 11. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Oracle Solaris executes to compromise Oracle Solaris. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Solaris accessible data as well as unauthorized read access to a subset of Oracle Solaris accessible data. CVSS 3.0 Base Score 4.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N).

Which versions are affected by CVE-2020-2656?

It affects 1 product.

Products include Oracle Solaris.

How do I fix CVE-2020-2656?

No fix has been published for CVE-2020-2656 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2020-2656 being exploited?

There is no known exploitation of CVE-2020-2656 in the wild and no public exploit code.

All Oracle Solaris vulnerabilities

Sources

Also known as GHSA-63wx-2rxw-w346.