Information disclosure in Fortinet FortiOS

1) Information disclosure

EUVDB-ID: #VU13526

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-9185

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local attacker to obtain potentially sensitive information.

The vulnerability exists in the SSL-VPN web portal of FortiOS due to the web portal returns the target user's login and password in plain text in a javascript file. A local attacker can bookmark a page in the SSL-VPN portal that uses single sign-on (SSO) and obtain the password.

Mitigation

Update to version 6.0.1.

Vulnerable software versions

FortiOS: 2.5 0mr4 - 6.0.0

CPE2.3

• cpe:2.3:o:fortinet:fortios:6.0.0:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:5.4.9:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:5.2.13:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:5.6.3:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:4.3.16:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:5.0.13:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:3.0 mr1:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:2.80:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:3 beta:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:4.2.13:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:4.1.11:*:*:*:*:*:*:*

External links

http://fortiguard.com/psirt/FG-IR-18-027

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.