CVE-2018-13374 : A Improper Access Control in Fortinet FortiOS 6.0.2, 5.6.7 and before, FortiADC

A Improper Access Control in Fortinet FortiOS 6.0.2, 5.6.7 and before, FortiADC 6.1.0, 6.0.0 to 6.0.1, 5.4.0 to 5.4.4 allows attacker to obtain the LDAP server login credentials configured in FortiGate via pointing a LDAP server connectivity test request to a rogue LDAP server instead of the configured one.

Published 2019-01-22 14:29:00

Updated 2025-01-27 21:30:51

Source Fortinet, Inc.

View at NVD, CVE.org

Products affected by CVE-2018-13374

Fortinet » Fortios
Versions before (<) 6.0.3
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
Matching versions
Fortinet » Fortiadc
Versions from including (>=) 5.4.0 and before (<) 5.4.5
cpe:2.3:a:fortinet:fortiadc:*:*:*:*:*:*:*:*
Matching versions
Fortinet » Fortiadc
Versions from including (>=) 6.0.0 and before (<) 6.0.2
cpe:2.3:a:fortinet:fortiadc:*:*:*:*:*:*:*:*
Matching versions
Fortinet » Fortiadc » Version: 6.1.0
cpe:2.3:a:fortinet:fortiadc:6.1.0:*:*:*:*:*:*:*
Matching versions

CVE-2018-13374 is in the CISA Known Exploited Vulnerabilities Catalog

This issue is known to have been leveraged as part of a ransomware campaign.

CISA vulnerability name:

Fortinet FortiOS and FortiADC Improper Access Control Vulnerability

CISA required action:

Apply updates per vendor instructions.

CISA description:

Fortinet FortiOS and FortiADC contain an improper access control vulnerability that allows attackers to obtain the LDAP server login credentials configured in FortiGate by pointing a LDAP server connectivity test request to a rogue LDAP server.

Notes:

https://www.fortiguard.com/psirt/FG-IR-18-157; https://nvd.nist.gov/vuln/detail/CVE-2018-13374

Added on 2022-09-08 Action due date 2022-09-29

Exploit prediction scoring system (EPSS) score for CVE-2018-13374

EPSS FAQ

2.72%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 85 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-13374

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
4.0	MEDIUM	AV:N/AC:L/Au:S/C:P/I:N/A:N	8.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: Single Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
8.8	HIGH	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	2.8	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High
4.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N	2.8	1.4	NIST	2024-10-23
Attack Vector: Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: Low Integrity: None Availability: None
4.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N	2.8	1.4	Fortinet, Inc.
Attack Vector: Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: Low Integrity: None Availability: None

CWE ids for CVE-2018-13374

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.
Assigned by:
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
- nvd@nist.gov (Primary)

References for CVE-2018-13374

https://fortiguard.com/advisory/FG-IR-18-157

Read-only admins can obtain LDAP credentials configured in FortiGate using LDAP test connectivity feature | FortiGuard
Vendor Advisory