Multiple vulnerabilities in FortiGate FortiOS

Published: 2019-07-28 | Updated: 2019-08-09

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2019-5591 CVE-2018-13367
CWE-ID	CWE-285 CWE-200
Exploitation vector	Network
Public exploit	Vulnerability #1 is being exploited in the wild.
Vulnerable software	FortiOS Operating systems & Components / Operating system
Vendor	Fortinet, Inc

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

UPDATED: 09.08.2019

Added vulnerability #2, updated bulletin title.

1) Improper Authorization

EUVDB-ID: #VU19505

Risk: Low

CVSSv4.0: 2.3 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Clear]

CVE-ID: CVE-2019-5591

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

The vulnerability allows a remote attacker to impersonate LDAP server.

The vulnerability exists due to FortiOS does not check LDAP server identity by default. A remote attacker with ability to perform MitM attack can impersonate LDAP server and gain unauthorized access to network resources.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FortiOS: 6.0.0 - 6.2.0

CPE2.3

External links

https://fortiguard.com/psirt/FG-IR-19-037

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.

2) Information disclosure

EUVDB-ID: #VU20012

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-13367

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to FortiOS WEB UI reveals version and other system information via JS files. A remote non-authenticated attacker can gain access to potentially sensitive information.