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CVE-2018-14916: Loytec Lgate 902 Firmware: Incorrect Permission Assignment for Critical Resource

CVE-2018-14916 is rated critical with a CVSS v3.0 base score of 9.1 and NVD lists Loytec Lgate 902 Firmware as the affected product. Per its scoring, it can be exploited over the network, without authentication, without any user interaction.

Vulnerability description

LOYTEC LGATE-902 6.3.2 devices allow Arbitrary file deletion.

Severity breakdown

CVSS v3.0 9.1: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

• Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
• Attack complexity: Low. No special conditions; the attack can be repeated reliably.
• Privileges required: None. No account or prior access is needed.
• User interaction: None. No action from any user is needed.
• Scope: Unchanged. Impact stays within the vulnerable component.
• Confidentiality impact: None. No loss of confidentiality.
• Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
• Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-732: Incorrect Permission Assignment for Critical Resource

The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.

Affected products

• Loytec Lgate 902 Firmware: before 6.4.2

References

• http://packetstormsecurity.com/files/152453/Loytec-LGATE-902-XSS-Traversal-File-Deletion.html
• http://seclists.org/fulldisclosure/2019/Apr/12
• https://seclists.org/fulldisclosure/2019/Apr/12