Vulnerability identifier: #VU32866

Vulnerability risk: Low

CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6070

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
f2fs-tools
Other software / Other software solutions

Vendor: git.kernel.org

Description

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in "sanity_check_area_boundary" function in the file system checking functionality. A remote administrator can create a specially crafted f2fs file, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

f2fs-tools: 1.12.0

---

External links
http://www.talosintelligence.com/vulnerability_reports/TALOS-2020-0988

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.