CVE-2019-11772 Memory corruption in Eclipse OpenJ9

Critical 9.8 Published 17 Jul 2019 Updated 4 Aug 2024

A missing bounds check in Eclipse OpenJ9's JIT compiler allows arbitrary memory writes, potentially enabling code execution or privilege escalation.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2019-11772?

CVE-2019-11772 is a critical memory corruption vulnerability in The Eclipse Foundation Eclipse OpenJ9, published on 17 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In Eclipse OpenJ9 prior to 0.15, the String.getBytes(int, int, byte[], int) method does not verify that the provided byte array is non-null nor that the provided index is in bounds when compiled by the JIT. This allows arbitrary writes to any 32-bit address or beyond the end of a byte array within Java code run under a SecurityManager.

Weakness: CWE-787

Which versions are affected by CVE-2019-11772?

It affects 1 product.

Products include Eclipse Openj9.

How do I fix CVE-2019-11772?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2019-11772 being exploited?

There is no known exploitation of CVE-2019-11772 in the wild and no public exploit code.

Sources

Also known as GHSA-pm38-595m-8jp2.