CVE-2018-20033 Memory corruption in FlexNet Publisher

Critical 9.8 Published 25 Feb 2019 Updated 17 Sep 2024

Remote attackers can corrupt memory in FlexNet Publisher daemons, causing service shutdown and denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2018-20033?

CVE-2018-20033 is a critical memory corruption vulnerability in Flexera Software LLC FlexNet Publisher, published on 25 Feb 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A Remote Code Execution vulnerability in lmgrd and vendor daemon components of FlexNet Publisher version 11.16.1.0 and earlier could allow a remote attacker to corrupt the memory by allocating / deallocating memory, loading lmgrd or the vendor daemon and causing the heartbeat between lmgrd and the vendor daemon to stop. This would force the vendor daemon to shut down. No exploit of this vulnerability has been demonstrated.

Weakness: CWE-770

Which versions are affected by CVE-2018-20033?

It affects 2 products.

Products include Flexera Flexnet Publisher, Oracle Communications Lsms.

How do I fix CVE-2018-20033?

No fix has been published for CVE-2018-20033 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-2018-20033 being exploited?

There is no known exploitation of CVE-2018-20033 in the wild and no public exploit code.

Sources

Also known as GHSA-3jq8-j7q6-f6m6.