CVE-2020-6106 Explained : Impact and Mitigation

An exploitable information disclosure vulnerability exists in the init_node_manager functionality of F2fs-Tools F2fs.Fsck 1.12 and 1.13. A specially crafted filesystem can be used to disclose information. An attacker can provide a malicious file to trigger this vulnerability.

Understanding CVE-2020-6106

This CVE involves an information disclosure vulnerability in F2fs-Tools F2fs.Fsck 1.12 and 1.13.

What is CVE-2020-6106?

The vulnerability allows attackers to disclose information by exploiting the init_node_manager function in the affected versions of F2fs-Tools.

The Impact of CVE-2020-6106

The base severity of this vulnerability is rated as MEDIUM with a CVSS base score of 4.4. It has a high impact on confidentiality.

Technical Details of CVE-2020-6106

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability stems from an incorrect calculation of buffer size (CWE-131) in the init_node_manager function of F2fs-Tools F2fs.Fsck 1.12 and 1.13.

Affected Systems and Versions

Product: F2fs-Tools
Versions: F2fs-Tools F2fs.Fsck 1.12, F2fs-Tools F2fs.Fsck 1.13

Exploitation Mechanism

Attack Complexity: LOW
Attack Vector: LOCAL
Privileges Required: HIGH
User Interaction: NONE
Scope: UNCHANGED

Mitigation and Prevention

Protecting systems from CVE-2020-6106 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor patches promptly
Monitor for any suspicious file activities
Restrict access to vulnerable systems

Long-Term Security Practices

Regular security training for employees
Implement file integrity monitoring
Keep systems and software updated
Conduct regular security audits

Patching and Updates

Ensure that the affected F2fs-Tools versions (1.12 and 1.13) are updated with the latest patches to mitigate the vulnerability.