Administrator cookie leakage in FortiOS and FortiProxy

1) Insufficiently protected credentials

EUVDB-ID: #VU88233

Risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-41677

CWE-ID: CWE-522 - Insufficiently Protected Credentials

Exploit availability: No

Description

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

The vulnerability exists due to insufficiently protected credentials. A remote attacker can trick the victim to visit a specially crafted website through the SSL-VPN and obtain the administrator cookie.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FortiOS: 6.0.0 - 7.4.1

FortiProxy: 1.0.0 - 7.4.1

CPE2.3

• cpe:2.3:o:fortinet:fortios:6.0.18:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:6.2.15:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:6.4.14:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:7.0.12:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:7.2.6:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:7.4.1:*:*:*:*:*:*:*
• cpe:2.3:h:fortinet:fortiproxy:1.0.7:*:*:*:*:*:*:*
• cpe:2.3:h:fortinet:fortiproxy:1.1.6:*:*:*:*:*:*:*
• cpe:2.3:h:fortinet:fortiproxy:1.2.13:*:*:*:*:*:*:*
• cpe:2.3:h:fortinet:fortiproxy:2.0.14:*:*:*:*:*:*:*

External links

https://www.fortiguard.com/psirt/FG-IR-23-493

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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