CVE-2020-6070 Memory corruption in F2fs-tools

Medium 6.7 Published 10 Aug 2020 Updated 4 Aug 2024

A specially crafted f2fs file triggers out-of-bounds heap operations in fsck.f2fs, allowing attackers to execute arbitrary code.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2020-6070?

CVE-2020-6070 is a medium-severity memory corruption vulnerability in Fedoraproject Fedora, published on 10 Aug 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An exploitable code execution vulnerability exists in the file system checking functionality of fsck.f2fs 1.12.0. A specially crafted f2fs file can cause a logic flaw and out-of-bounds heap operations, resulting in code execution. An attacker can provide a malicious file to trigger this vulnerability.

Weakness: CWE-131

Which versions are affected by CVE-2020-6070?

It affects 2 products.

Products include F2fs-Tools Project F2fs-Tools, Fedoraproject Fedora.

How do I fix CVE-2020-6070?

Apply the vendor's patch.

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

Is CVE-2020-6070 being exploited?

There is no known exploitation of CVE-2020-6070 in the wild and no public exploit code.

All Fedoraproject Fedora vulnerabilities

Sources

Also known as DEBIAN-CVE-2020-6070, GHSA-5r6m-66fx-q4cm, MGASA-2020-0436, UBUNTU-CVE-2020-6070.