Fortinet urges customers to immediately fix a critical authentication bypass flaw in FortiGate and FortiProxy
Vulnerabilities mentionedAll →
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2022-40684 | Admin-Interface Auth Bypass in Fortinet FortiOS, FortiProxy & FortiSwitchManager Fortinet's FortiOS, FortiProxy, and FortiSwitchManager contain an authentication bypass vulnerability (CWE-288) that lets an unauthenticated remote attacker gain access to the administrative interface. It is triggered by sending specially crafted HTTP or HTTPS requests directly to the admin interface, with no credentials or exploit code required. By bypassing authentication, an attacker can perform administrative operations on the device, such as modifying configuration or creating privileged accounts. Any organization running the affected products is exposed, particularly where the management interface is reachable from the internet. The flaw is being actively exploited: it was added to CISA's Known Exploited Vulnerabilities catalog on 2022-10-11 with known ransomware use, and EPSS assigns it roughly a 100% probability of exploitation within 30 days, although no public PoC is known. Do: Upgrade FortiOS, FortiProxy, and FortiSwitchManager to the fixed releases identified in Fortinet's advisory per the KEV required action. As mitigation, restrict access to the admin interface (e.g., disable WAN-facing management and use local-in policies or allow-lists for management IPs). Review admin logs and device configuration for signs of unauthorized access, such as unexpected admin accounts, added SSH keys, or config changes. | 9.8 | 100% | KEV ransomware PoC ×2 |
| massHundreds of thousands of internet-exposed Fortinet admin interfaces (~300k+ exposed FortiGate/FortiProxy management interfaces observed in public scans around… |
Full article223 words · extracted from securityaffairs.com · click to collapse
Fortinet addressed a critical authentication bypass vulnerability that impacted FortiGate firewalls and FortiProxy web proxies.
Fortinet addressed a critical authentication bypass flaw, tracked as CVE-2022-40684, that impacted FortiGate firewalls and FortiProxy web proxies.
An attacker can exploit the vulnerability to log into vulnerable devices.
“An authentication bypass using an alternate path or channel [CWE-88] in FortiOS and FortiProxy may allow an unauthenticated attacker to perform operations on the administrative interface via specially crafted HTTP or HTTPS requests,” reads the customer support bulletin issued by the company.
The company urges customers of addressing this critical vulnerability immediately due to the risk of remote exploitation of the flaw.
The vulnerability impacts FortiOS versions from 7.0.0 to 7.0.6 and from 7.2.0 to 7.2.1, and FortiProxy versions from 7.0.0 to 7.0.6 and 7.2.0
The cybersecurity firm addressed the flaw with the release of FortiOS/FortiProxy versions 7.0.7 or 7.2.2.
The company also provides a workaround for those who can’t immediately deploy security updates.
Customers that are not able to upgrade their systems should restrict access to their devices to a specific set of IP addresses.
At this time it is not clear if the vulnerability has been actively exploited in attacks in the wild.
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Text extracted automatically; images, tables and formatting may be missing. Original: https://securityaffairs.com/136786/security/fortinet-critical-flaw.html