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Fortinet Warns of New Auth Bypass Flaw Affecting FortiGate and FortiProxy
Fortinet has privately warned its customers of a security flaw affecting FortiGate firewalls and FortiProxy web proxies that could potentially allow an attacker to perform unauthorized actions on susceptible devices. Tracked as CVE-2022-40684, the high-severity flaw relates to an authentication bypass vulnerability that could permit an unauthenticated adversary to perform arbitrary operations on
Fortinet has privately warned its customers of a security flaw affecting FortiGate firewalls and FortiProxy web proxies that could potentially allow an attacker to perform unauthorized actions on susceptible devices.
Tracked as CVE-2022-40684, the high-severity flaw relates to an authentication bypass vulnerability that could permit an unauthenticated adversary to perform arbitrary operations on the administrative interface.
The issue impacts the following versions, and has been addressed in FortiOS versions 7.0.7 and 7.2.2, and FortiProxy version 7.0.7 released this week -
- FortiOS - From 7.0.0 to 7.0.6 and from 7.2.0 to 7.2.1
- FortiProxy - From 7.0.0 to 7.0.6 and 7.2.0
“Due to the ability to exploit this issue remotely, Fortinet is strongly recommending all customers with the vulnerable versions to perform an immediate upgrade,” the company cautioned in an alert shared by a security researcher named Gitworm on Twitter.
When reached for a comment, Fortinet acknowledged the advisory and noted that it’s delaying public notice until its customers have applied the fixes.
“Timely and ongoing communications with our customers is a key component in our efforts to best protect and secure their organization,” the company said in a statement shared with The Hacker News. “Customer communications often detail the most up-to-date guidance and recommended next steps to best protect and secure their organization.”
“There are instances where confidential advance customer communications can include early warning on advisories to enable customers to further strengthen their security posture, which then will be publicly released in the coming days to a broader audience. The security of our customers is our first priority.”
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This Metasploit module exploits an authentication bypass vulnerability in the Fortinet FortiOS, FortiProxy, and FortiSwitchManager API to gain access to a chosen account and then adds an SSH key to the authorized_keys file of the chosen account, allowing you to login to the system with the chosen account. Successful exploitation results in remote code execution.
An authentication bypass using an alternate path or channel [CWE-288] in Fortinet FortiOS version 7.2.0 through 7.2.1 and 7.0.0 through 7.0.6, FortiProxy version 7.2.0 and version 7.0.0 through 7.0.6 and FortiSwitchManager version 7.2.0 and 7.0.0 allows an unauthenticated atttacker to perform operations on the administrative interface via specially crafted HTTP or HTTPS requests.
The authentication bypass flaw in FortiOS, FortiProxy and FortiSwitchManager is easy to find and exploit, security experts say.
A proof-of-concept (PoC) exploit code has been made available for the recently disclosed critical security flaw affecting Fortinet FortiOS, FortiProxy, and FortiSwitchManager, making it imperative that users move quickly to apply the patches. "FortiOS exposes a management web portal that allows a user to configure the system," Horizon3.ai researcher James Horseman said. "Additionally, a user can
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