Security Affairspublished Oct 10, 20:47 UTC (Oct 10, 2022)ingested Sep 10, 06:12 UTC@securityaffairs

CVE-2022-40684 flaw in Fortinet products is being exploited in the wild

criticalExploit / PoC exploited in the wildimportance 60CVE-2022-40684

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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	Fortinet FortiOS Fortinet FortiProxy Fortinet FortiSwitchManager	massHundreds of thousands of internet-exposed Fortinet admin interfaces (~300k+ exposed FortiGate/FortiProxy management interfaces observed in public scans around…	Oct 18, 2022

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

Fortinet FortiOS
Fortinet FortiProxy
Fortinet FortiSwitchManager

massHundreds of thousands of internet-exposed Fortinet admin interfaces (~300k+ exposed FortiGate/FortiProxy management interfaces observed in public scans around…

Oct 18, 2022

Full article323 words · extracted from securityaffairs.com · click to collapse

Fortinet has confirmed that the recently disclosed critical authentication bypass issue (CVE-2022-40684) is being exploited in the wild.

Last week, 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 advisory issued by the company PSIRT.

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. FortiProxy versions from 7.0.0 to 7.0.6 and 7.2.0 are also impacted.

The cybersecurity firm addressed the flaw with the release of FortiOS/FortiProxy versions 7.0.7 or 7.2.2. The company also provided a workaround for those who can’t immediately deploy security updates.

Customers that are not able to upgrade their systems should Disable HTTP/HTTPS administrative interface or Limit IP addresses that can reach it.

Today the company confirmed today the critical authentication bypass vulnerability is being exploited in the wild.

“Fortinet is aware of an instance where this vulnerability was exploited, and recommends immediately validating your systems against the following indicator of compromise in the device’s logs: user=”Local_Process_Access”” continues the advisory.

Security researchers at the Horizon3 Attack Team have developed a proof-of-concept (PoC) exploit code and plan to release it later this week.

Another appliance vuln down…
CVE-2022-40684, affecting multiple #Fortinet solutions, is an auth bypass that allows remote attackers to interact with all management API endpoints.
Blog post and POC coming later this week. Patch now. pic.twitter.com/YS7svIljAw
— Horizon3 Attack Team (@Horizon3Attack) October 10, 2022

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Pierluigi Paganini

(SecurityAffairs – hacking, Fortinet)

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Text extracted automatically; images, tables and formatting may be missing. Original: https://securityaffairs.com/136905/breaking-news/cve-2022-40684-fortinet-products-exploited.html