CSRF in FortiOS and FortiProxy
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-26103 |
| CWE-ID | CWE-352 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
FortiOS Operating systems & Components / Operating system FortiProxy Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor | Fortinet, Inc |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Cross-site request forgery
EUVDB-ID: #VU58629
Risk: Medium
CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-26103
CWE-ID:
CWE-352 - Cross-Site Request Forgery (CSRF)
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform cross-site request forgery attacks.
The vulnerability exists due to insufficient validation of the HTTP request origin in the SSL VPN interface. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.
MitigationInstall updates from vendor's website.
Vulnerable software versionsFortiOS: 5.6.0 - 7.0.0
FortiProxy: 1.2.0 - 2.0.3
CPE2.3- cpe:2.3:o:fortinet:fortios:7.0.0:*:*:*:*:*:*:*
- cpe:2.3:o:fortinet:fortios:6.4.6:*:*:*:*:*:*:*
- cpe:2.3:o:fortinet:fortios:6.2.9:*:*:*:*:*:*:*
- cpe:2.3:o:fortinet:fortios:6.0.13:*:*:*:*:*:*:*
- cpe:2.3:o:fortinet:fortios:5.6.14:*:*:*:*:*:*:*
- cpe:2.3:h:fortinet:fortiproxy:2.0.3:*:*:*:*:*:*:*
- cpe:2.3:h:fortinet:fortiproxy:1.2.11:*:*:*:*:*:*:*
http://www.fortiguard.com/psirt/FG-IR-20-158
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.
