#VU47659 Information disclosure in F2fs.Fsck - CVE-2020-6107

Vulnerability identifier: #VU47659

Vulnerability risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-6107

CWE-ID: CWE-200

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
F2fs.Fsck
Other software / Other software solutions

Vendor: F2fs-Tools

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in the "dev_read" functionality. A local administrator can use a specially crafted f2fs filesystem and gain unauthorized access to sensitive information on the system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

F2fs.Fsck: 1.13

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External links
https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1049

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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