Fortinet Warns of Critical FortiOS SSL VPN Vulnerability Under Active Exploitation

Fortinet has disclosed a new critical security flaw in FortiOS SSL VPN that it stated is probably being exploited in the wild.

The vulnerability, CVE-2024-21762 (CVSS rating: 9.6), enables for the execution of arbitrary code and instructions.

“A out-of-bounds produce vulnerability [CWE-787] in FortiOS may perhaps enable a remote unauthenticated attacker to execute arbitrary code or command by way of specially crafted HTTP requests,” the company explained in a bulletin launched Thursday.

It even more acknowledged that the issue is “potentially being exploited in the wild,” without having giving further specifics about how it’s getting weaponized and by whom.

The next variations are impacted by the vulnerability. It can be really worth noting that FortiOS 7.6 is not affected.

• FortiOS 7.4 (versions 7.4. by means of 7.4.2) – Up grade to 7.4.3 or over
• FortiOS 7.2 (versions 7.2. by 7.2.6) – Update to 7.2.7 or earlier mentioned
• FortiOS 7. (versions 7.. through 7..13) – Update to 7..14 or above
• FortiOS 6.4 (versions 6.4. via 6.4.14) – Enhance to 6.4.15 or higher than
• FortiOS 6.2 (versions 6.2. by means of 6.2.15) – Up grade to 6.2.16 or over
• FortiOS 6. (versions 6. all versions) – Migrate to a fixed release

The development will come as Fortinet issued patches for CVE-2024-23108 and CVE-2024-23109, impacting FortiSIEM supervisor, letting a distant unauthenticated attacker to execute unauthorized instructions by way of crafted API requests.

Previously this 7 days, the Netherlands government discovered a computer network made use of by the armed forces was infiltrated by Chinese point out-sponsored actors by exploiting known flaws in Fortinet FortiGate equipment to provide a backdoor identified as COATHANGER.

The company, in a report published this 7 days, divulged that N-day security vulnerabilities in its application, this kind of as CVE-2022-42475 and CVE-2023-27997, are currently being exploited by a number of activity clusters to target governments, support vendors, consultancies, production, and massive critical infrastructure companies.

Earlier, Chinese danger actors have been linked to the zero-day exploitation of security flaws in Fortinet appliances to supply a extensive selection of implants, this sort of as BOLDMOVE, THINCRUST, and CASTLETAP.

It also follows an advisory from the U.S. government about a Chinese country-condition group dubbed Volt Typhoon, which has specific critical infrastructure in the region for long-term undiscovered persistence by getting benefit of identified and zero-working day flaws in networking appliances this kind of as all those from Fortinet, Ivanti Connect Secure, NETGEAR, Citrix, and Cisco for initial accessibility.

China, which has denied the allegations, accused the U.S. of conducting its personal cyber-assaults.

If just about anything, the strategies waged by China and Russia underscore the developing threat confronted by internet-dealing with edge equipment in current several years owing to the fact that these types of systems lack endpoint detection and response (EDR) aid, producing them ripe for abuse.

“These assaults exhibit the use of presently solved N-day vulnerabilities and subsequent [living-off-the-land] approaches, which are really indicative of the habits used by the cyber actor or team of actors recognised as Volt Hurricane, which has been using these procedures to target critical infrastructure and most likely other adjacent actors,” Fortinet reported.

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Some parts of this article are sourced from:
thehackernews.com