IT Pro is supported by its audience. When you purchase through links on our site, we may earn an affiliate commission. Learn more

Fortinet firewall vulnerability could give hackers full control

The FBI has issued multiple warnings of hackers using flaws in Fortinet products

Security researchers have discovered a vulnerability in the Fortinet FortiWeb firewall that could let an attacker take full control of the security device. This vulnerability, assigned CVE-2021-22123 and a CVSSv3 score of 7.4, is highly dangerous. 

According to Andrey Medov, the researcher at Positive Technologies who discovered the bug, a command injection vulnerability exists in the FortiWeb management interface that may allow authenticated remote attackers to execute arbitrary commands in the system via the SAML server configuration page. Executing commands with maximum privileges will give the attacker full control over the server. 

“If, as a result of incorrect configuration, the firewall administration interface is available on the Internet, and the product itself is not updated to the latest versions, then the combination of CVE-2021-22123 and CVE-2020-29015 that Positive Technologies discovered earlier may allow an attacker to penetrate the internal network,” he said.

The vendor issued a security advisory patching the flaw last month. To fix the vulnerability, update FortiWeb 6.3.7 (and earlier), 6.2.3 (and earlier), 6.1.x, 6.0.x, or 5.9.x to versions 6.3.8 or 6.2.4, depending on the build used. 

The patch comes after an FBI warning last month where an APT group exploited a Fortigate appliance to access a web server hosting the domain for a US municipal government.

Related Resource

The secure cloud configuration imperative

The central role of cloud security posture management

The secure cloud configuration imperativeFree download

"The APT actors likely created an account with the username 'elie' to further enable malicious activity on the network," according to the Feds.

While the FBI did not say which local government was hacked, it has issued multiple warnings of hackers using flaws in Fortinet products.

“The FBI and the Cybersecurity and Infrastructure Security Agency (CISA) previously warned in April 2021 that APT actors had gained access to devices on ports 4443, 8443, and 10443 for Fortinet FortiOS CVE-2018-13379, and enumerated devices for FortiOS CVE-2020- 12812 and FortiOS CVE-2019-5591,” the flash notice read.

The FBI added that APT actors can leverage their access to conduct data exfiltration, data encryption, or other malicious activity. 

“The APT actors are actively targeting a broad range of victims across multiple sectors, indicating the activity is focused on exploiting vulnerabilities rather than targeted at specific sectors,” the FBI warned.

Organizations using these products should update them as soon as possible.

Featured Resources

Accelerating AI modernisation with data infrastructure

Generate business value from your AI initiatives

Free Download

Recommendations for managing AI risks

Integrate your external AI tool findings into your broader security programs

Free Download

Modernise your legacy databases in the cloud

An introduction to cloud databases

Free Download

Powering through to innovation

IT agility drive digital transformation

Free Download

Recommended

LockBit 2.0 ransomware disguised as PDFs distributed in email attacks
Security

LockBit 2.0 ransomware disguised as PDFs distributed in email attacks

27 Jun 2022
Best free malware removal tools 2022
Security

Best free malware removal tools 2022

22 Jun 2022
A guide to cyber security certification and training
Careers & training

A guide to cyber security certification and training

16 Jun 2022
What is shoulder surfing?
social engineering

What is shoulder surfing?

10 Jun 2022

Most Popular

How to boot Windows 11 in Safe Mode
Microsoft Windows

How to boot Windows 11 in Safe Mode

7 Jun 2022
The top programming languages you need to learn for 2022
Careers & training

The top programming languages you need to learn for 2022

23 Jun 2022
Swift exit: How the world cut off Russian banks
finance

Swift exit: How the world cut off Russian banks

24 Jun 2022