CVE-2019-15878 Use after free in FreeBSD

High 7.8 Published 13 May 2020 Updated 5 Aug 2024

An unprivileged local user can trigger a use-after-free in the SCTP subsystem, potentially leading to code execution or privilege escalation.

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

What is CVE-2019-15878?

CVE-2019-15878 is a high-severity use after free vulnerability in Freebsd Freebsd, published on 13 May 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In FreeBSD 12.1-STABLE before r352509, 11.3-STABLE before r352509, and 11.3-RELEASE before p9, an unprivileged local user can trigger a use-after-free situation due to improper checking in SCTP when an application tries to update an SCTP-AUTH shared key.

Weakness: CWE-416

Which versions are affected by CVE-2019-15878?

It affects 1 product.

Products include Freebsd Freebsd.

How do I fix CVE-2019-15878?

No fix has been published for CVE-2019-15878 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-2019-15878 being exploited?

There is no known exploitation of CVE-2019-15878 in the wild and no public exploit code.

All Freebsd Freebsd vulnerabilities

Sources

Also known as GHSA-36h3-8635-w5mx.