CVE-2018-13374: Fortinet FortiOS and FortiADC Improper Access Control Vulnerability

Vulnerability summary

CVE-2018-13374 is a medium (CVSS 4.3) vulnerability in Fortinet FortiOS and FortiADC. It is known to be exploited: CISA lists it, first on 08-09-2022. It has been used in ransomware campaigns. EPSS estimates a 38.09% chance of exploitation in the next 30 days, higher than 98.5% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 22-01-2019
   PublishedVulnerability first disclosed.
2. 08-09-2022
   Added to CISA KEVFortinet FortiOS and FortiADC Improper Access Control Vulnerability
3. 29-09-2022
   CISA remediation dueApply updates per vendor instructions.
4. 01-10-2026
   Last modifiedVulnerability information updated.

Description

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.

• CWE-732Incorrect Permission Assignment for Critical ResourceThe product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.