CVE-2018-2639 Code injection in Java

High 8.3 Published 18 Jan 2018 Updated 3 Oct 2024

An unauthenticated attacker can execute arbitrary code and take over Java SE via malicious web content, 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-2018-2639?

CVE-2018-2639 is a high-severity code injection vulnerability in Oracle Jdk, published on 18 Jan 2018. 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 SE component of Oracle Java SE (subcomponent: Deployment). Supported versions that are affected are Java SE: 8u152 and 9.0.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Java SE, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Java SE. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed by an administrator). CVSS 3.0 Base Score 8.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H).

Which versions are affected by CVE-2018-2639?

It affects 7 products.

Products include Oracle Jdk, Oracle Jre, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Eus, Redhat Enterprise Linux Server, Redhat Enterprise Linux Workstation and 1 more.

How do I fix CVE-2018-2639?

Upgrade to a fixed version.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2018-2639 being exploited?

There is no known exploitation of CVE-2018-2639 in the wild and no public exploit code.

All Oracle Jdk vulnerabilities

Sources

Also known as GHSA-7mqh-pjfj-w58h, MINI-hvg7-x6p9-g2px.