CVE-2020-7455 Information disclosure in FreeBSD

Medium 5.5 Published 13 May 2020 Updated 4 Aug 2024

An attacker can disclose small amounts of kernel or process memory via the FTP packet handler in FreeBSD's libalias NAT implementation.

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-2020-7455?

CVE-2020-7455 is a medium-severity 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 r360973, 12.1-RELEASE before p5, 11.4-STABLE before r360973, 11.4-BETA1 before p1 and 11.3-RELEASE before p9, the FTP packet handler in libalias incorrectly calculates some packet length allowing disclosure of small amounts of kernel (for kernel NAT) or natd process space (for userspace natd).

Weakness: CWE-772

Which versions are affected by CVE-2020-7455?

It affects 1 product.

Products include Freebsd Freebsd.

How do I fix CVE-2020-7455?

No fix has been published for CVE-2020-7455 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-7455 being exploited?

There is no known exploitation of CVE-2020-7455 in the wild and no public exploit code.

All Freebsd Freebsd vulnerabilities

Sources

Also known as GHSA-8c5x-65fv-44c8.