CVE-2019-4523 Memory corruption in DB2 High Performance Unload load for LUW

High 8.4 Published 22 Oct 2019 Updated 16 Sep 2024

A local attacker can exploit a buffer overflow in IBM DB2 High Performance Unload to execute arbitrary code with root privileges.

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

What is CVE-2019-4523?

CVE-2019-4523 is a high-severity memory corruption vulnerability in IBM DB2 High Performance Unload load for LUW, published on 22 Oct 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

IBM DB2 High Performance Unload load for LUW 6.1 and 6.5 is vulnerable to a buffer overflow, caused by improper bounds checking which could allow a local attacker to execute arbitrary code on the system with root privileges. IBM X-Force ID: 165481.

Weakness: CWE-120

Which versions are affected by CVE-2019-4523?

It affects 1 product.

Products include Ibm Db2 High Performance Unload Load.

How do I fix CVE-2019-4523?

No fix has been published for CVE-2019-4523 yet. Limit exposure of the affected software until one is available.

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

Is CVE-2019-4523 being exploited?

There is no known exploitation of CVE-2019-4523 in the wild and no public exploit code.

Sources

Also known as GHSA-8xjf-2mv7-wrhw.