MitM attack in Fortinet FortiClient SAML SSO feature
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2022-45856 |
| CWE-ID | CWE-295 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Fortinet FortiClient for Windows Server applications / Other server solutions FortiClient (macOS) Client/Desktop applications / Software for system administration FortiClient (Linux) Client/Desktop applications / Software for system administration FortiClient (Android) Mobile applications / Apps for mobile phones FortiClient (iOS) Mobile applications / Apps for mobile phones |
| Vendor | Fortinet, Inc |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Improper certificate validation
EUVDB-ID: #VU97116
Risk: Medium
CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2022-45856
CWE-ID:
CWE-295 - Improper Certificate Validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform MitM attack.
The vulnerability exists due to improper validation of client-side certificates in SAML SSO feature. A remote attacker can perform MitM attack between the FortiClient and both the service provider and the identity provider.
MitigationInstall updates from vendor's website.
Vulnerable software versionsFortinet FortiClient for Windows: 6.4.0 - 7.0.7
FortiClient (macOS): 6.4.0 - 7.2.4
FortiClient (Linux): 6.4.0 - 7.2.4
FortiClient (Android): 5.0.0 - 7.2.0
FortiClient (iOS): 2.0.0 - 7.0.6
CPE2.3- cpe:2.3:a:fortinet:fortinet_forticlient:6.4.10:*:*:*:*:*:*:*
- cpe:2.3:a:fortinet:fortinet_forticlient:7.0.7:*:*:*:*:*:*:*
- cpe:2.3:a:fortinet:forticlient_macos:6.4.0:*:*:*:*:*:*:*
- cpe:2.3:a:fortinet:forticlient_macos:6.4.1:*:*:*:*:*:*:*
- cpe:2.3:a:fortinet:forticlient_macos:6.4.2:*:*:*:*:*:*:*
- cpe:2.3:a:fortinet:forticlient_linux:6.4.0:*:*:*:*:*:*:*
- cpe:2.3:a:fortinet:forticlient_linux:6.4.1:*:*:*:*:*:*:*
- cpe:2.3:a:fortinet:forticlient_linux:6.4.2:*:*:*:*:*:*:*
- cpe:2.3:a:fortinet:forticlient_android:5.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:fortinet:forticlient_android:5.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:fortinet:forticlient_ios:2.0.0:*:*:*:*:*:*:*
https://www.fortiguard.com/psirt/FG-IR-22-230
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.
