CVE-2020-8447 Use after free in n/a

Critical 9.8 Published 30 Jan 2020 Updated 4 Aug 2024

A use-after-free vulnerability in OSSEC-HIDS allows remote attackers to execute arbitrary code or cause a denial of service via crafted syscheck messages.

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-2020-8447?

CVE-2020-8447 is a critical use after free vulnerability in n/a, published on 30 Jan 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In OSSEC-HIDS 2.7 through 3.5.0, the server component responsible for log analysis (ossec-analysisd) is vulnerable to a use-after-free during processing of syscheck formatted msgs (received from authenticated remote agents and delivered to the analysisd processing queue by ossec-remoted).

Weakness: CWE-416

Which versions are affected by CVE-2020-8447?

It affects 1 product.

Products include Ossec Ossec.

How do I fix CVE-2020-8447?

No fix has been published for CVE-2020-8447 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2020-8447 being exploited?

There is no known exploitation of CVE-2020-8447 in the wild and no public exploit code.

Sources

Also known as GHSA-g47q-9m4h-vgjq.