CVE-2019-2540 Missing authorization in Java

Medium 6.1 Published 16 Jan 2019 Updated 2 Oct 2024

Unauthenticated attackers can modify or read Java Advanced Management Console data via network access, requiring user interaction.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2019-2540?

CVE-2019-2540 is a medium-severity missing authorization vulnerability in Oracle Corporation Java, published on 16 Jan 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Vulnerability in the Java Advanced Management Console component of Oracle Java SE (subcomponent: Server). The supported version that is affected is Java Advanced Management Console: 2.12. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java Advanced Management Console. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Java Advanced Management Console, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Java Advanced Management Console accessible data as well as unauthorized read access to a subset of Java Advanced Management Console accessible data. CVSS 3.0 Base Score 6.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).

Which versions are affected by CVE-2019-2540?

It affects 1 product.

Products include Oracle Java Advanced Management Console.

How do I fix CVE-2019-2540?

Apply the vendor's patch.

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

Is CVE-2019-2540 being exploited?

There is no known exploitation of CVE-2019-2540 in the wild and no public exploit code.

Sources

Also known as GHSA-8rj3-gxp7-6824.