Security
Headlines
HeadlinesLatestCVEs

Headline

Critical FortiOS and FortiProxy Vulnerability Likely Exploited - Patch Now!

Fortinet on Monday disclosed that a newly patched critical flaw impacting FortiOS and FortiProxy may have been “exploited in a limited number of cases” in attacks targeting government, manufacturing, and critical infrastructure sectors. The vulnerability, tracked as CVE-2023-27997 (CVSS score: 9.2), concerns a heap-based buffer overflow vulnerability in FortiOS and FortiProxy SSL-VPN that could

The Hacker News
#vulnerability#web#ios#microsoft#buffer_overflow#zero_day#ssl#The Hacker News

Network Security / Vulnerability

Fortinet on Monday disclosed that a newly patched critical flaw impacting FortiOS and FortiProxy may have been “exploited in a limited number of cases” in attacks targeting government, manufacturing, and critical infrastructure sectors.

The vulnerability, tracked as CVE-2023-27997 (CVSS score: 9.2), concerns a heap-based buffer overflow vulnerability in FortiOS and FortiProxy SSL-VPN that could allow a remote attacker to execute arbitrary code or commands via specifically crafted requests.

LEXFO security researchers Charles Fol and Dany Bach have been credited with discovering and reporting the flaw. It was addressed by Fortinet on June 9, 2023 in the following versions -

  • FortiOS-6K7K version 7.0.12 or above
  • FortiOS-6K7K version 6.4.13 or above
  • FortiOS-6K7K version 6.2.15 or above
  • FortiOS-6K7K version 6.0.17 or above
  • FortiProxy version 7.2.4 or above
  • FortiProxy version 7.0.10 or above
  • FortiProxy version 2.0.13 or above
  • FortiOS version 7.4.0 or above
  • FortiOS version 7.2.5 or above
  • FortiOS version 7.0.12 or above
  • FortiOS version 6.4.13 or above
  • FortiOS version 6.2.14 or above, and
  • FortiOS version 6.0.17 or above

The company, in an independent disclosure, said the issue was simultaneously discovered during a code audit that was prudently initiated following the active exploitation of a similar flaw in the SSL-VPN product (CVE-2022-42475, CVSS score: 9.3) in December 2022.

UPCOMING WEBINAR

🔐 Mastering API Security: Understanding Your True Attack Surface

Discover the untapped vulnerabilities in your API ecosystem and take proactive steps towards ironclad security. Join our insightful webinar!

Join the Session

Fortinet further said it is not attributing the exploitation events at this stage to a Chinese state-sponsored actor codenamed Volt Typhoon, which was disclosed by Microsoft last month as leveraging an unknown zero-day flaw in internet-facing Fortinet FortiGuard devices to gain initial access to target environments.

It, however, noted it “expects all threat actors, including those behind the Volt Typhoon campaign, to continue to exploit unpatched vulnerabilities in widely used software and devices.”

In light of active in-the-wild abuse, the company is recommending that customers take immediate action to update to the latest firmware version to avert potential risks.

“Fortinet continues to monitor the situation and has been proactively communicating to customers, strongly urging them to immediately follow the guidance provided to mitigate the vulnerability using either the provided workarounds or by upgrading,” the company told The Hacker News.

Found this article interesting? Follow us on Twitter and LinkedIn to read more exclusive content we post.

Related news

Tabletop exercises are headed to the next frontier: Space

More on the recent Snowflake breach, MFA bypass techniques and more.

Fortinet FortiOS Out-Of-Bounds Write

Fortinet FortiOS suffers from an out of bounds write vulnerability. Affected includes Fortinet FortiOS versions 7.4.0 through 7.4.2, 7.2.0 through 7.2.6, 7.0.0 through 7.0.13, 6.4.0 through 6.4.14, 6.2.0 through 6.2.15, 6.0.0 through 6.0.17, FortiProxy versions 7.4.0 through 7.4.2, 7.2.0 through 7.2.8, 7.0.0 through 7.0.14, 2.0.0 through 2.0.13, 1.2.0 through 1.2.13, 1.1.0 through 1.1.6, and 1.0.0 through 1.0.7.

CISA and Fortinet Warns of New FortiOS Zero-Day Flaws

By Deeba Ahmed Patch Now or Get Hacked: Researchers Confirm Potentially Active Exploitation of One of the FortiOS Flaws in the Wild. This is a post from HackRead.com Read the original post: CISA and Fortinet Warns of New FortiOS Zero-Day Flaws

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 said is likely being exploited in the wild. The vulnerability, CVE-2024-21762 (CVSS score: 9.6), allows for the execution of arbitrary code and commands. "A out-of-bounds write vulnerability [CWE-787] in FortiOS may allow a remote unauthenticated attacker to execute arbitrary code or command via specially

Chinese Hackers Infiltrate Dutch Defense Networks with Coathanger RAT

By Deeba Ahmed Chinese state-backed hackers targeted Dutch military networks by exploiting a vulnerability in a FortiGate device. This is a post from HackRead.com Read the original post: Chinese Hackers Infiltrate Dutch Defense Networks with Coathanger RAT

Chinese Hackers Exploited FortiGate Flaw to Breach Dutch Military Network

Chinese state-backed hackers broke into a computer network that's used by the Dutch armed forces by targeting Fortinet FortiGate devices. "This [computer network] was used for unclassified research and development (R&D)," the Dutch Military Intelligence and Security Service (MIVD) said in a statement. "Because this system was self-contained, it did not lead to any damage to the

CISA Warning: Nation-State Hackers Exploit Fortinet and Zoho Vulnerabilities

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday warned that multiple nation-state actors are exploiting security flaws in Fortinet FortiOS SSL-VPN and Zoho ManageEngine ServiceDesk Plus to gain unauthorized access and establish persistence on compromised systems. “Nation-state advanced persistent threat (APT) actors exploited CVE-2022-47966 to gain unauthorized

Critical RCE Vulnerability Puts 330,000 Fortinet Firewalls at Risk

By Deeba Ahmed The vulnerability has a CVSS score of 9.8 out of 10, is a critical security bug that affects Fortinet appliances and has been actively exploited in the wild. This is a post from HackRead.com Read the original post: Critical RCE Vulnerability Puts 330,000 Fortinet Firewalls at Risk

Alert: 330,000 FortiGate Firewalls Still Unpatched to CVE-2023-27997 RCE Flaw

No less than 330000 FortiGate firewalls are still unpatched and vulnerable to CVE-2023-27997, a critical security flaw affecting Fortinet devices that have come under active exploitation in the wild. Cybersecurity firm Bishop Fox, in a report published last week, said that out of nearly 490,000 Fortinet SSL-VPN interfaces exposed on the internet, about 69 percent remain unpatched. CVE-2023-27997

Researchers Develop Exploit Code for Critical Fortinet VPN Bug

Some 340,000 FortiGate SSL VPN appliances remain exposed to the threat more than three weeks after Fortinet released firmware updates to address the issue.

New Fortinet's FortiNAC Vulnerability Exposes Networks to Code Execution Attacks

Fortinet has rolled out updates to address a critical security vulnerability impacting its FortiNAC network access control solution that could lead to the execution of arbitrary code. Tracked as CVE-2023-33299, the flaw is rated 9.6 out of 10 for severity on the CVSS scoring system. It has been described as a case of Java untrusted object deserialization. "A deserialization of untrusted data

CISA Order Highlights Persistent Risk at Network Edge

The U.S. government agency in charge of improving the nation's cybersecurity posture is ordering all federal civilian agencies to take new measures to restrict access to Internet-exposed networking equipment. The directive comes amid a surge in attacks targeting previously unknown vulnerabilities in widely used security and networking appliances.

Fortinet: Patched Critical Flaw May Have Been Exploited

Users urged to apply updates to FortiOS SSL-VPN after attackers may have leveraged a recently discovered vulnerability in attacks against government, manufacturing, and critical infrastructure organizations.

CVE-2023-27997: Fortiguard

A heap-based buffer overflow vulnerability [CWE-122] in FortiOS version 7.2.4 and below, version 7.0.11 and below, version 6.4.12 and below, version 6.0.16 and below and FortiProxy version 7.2.3 and below, version 7.0.9 and below, version 2.0.12 and below, version 1.2 all versions, version 1.1 all versions SSL-VPN may allow a remote attacker to execute arbitrary code or commands via specifically crafted requests.

Critical RCE Flaw Discovered in Fortinet FortiGate Firewalls - Patch Now!

Fortinet has released patches to address a critical security flaw in its FortiGate firewalls that could be abused by a threat actor to achieve remote code execution. The vulnerability, tracked as CVE-2023-27997, is "reachable pre-authentication, on every SSL VPN appliance," Lexfo Security researcher Charles Fol, who discovered and reported the flaw, said in a tweet over the weekend. Details

Attackers Are Probing for Zero-Day Vulns in Edge Infrastructure Products

Nearly 20% of the zero-day flaws that attackers exploited in 2022 were in network, security, and IT management products, Mandiant says.

From Ransomware to Cyber Espionage: 55 Zero-Day Vulnerabilities Weaponized in 2022

As many as 55 zero-day vulnerabilities were exploited in the wild in 2022, with most of the flaws discovered in software from Microsoft, Google, and Apple. While this figure represents a decrease from the year before, when a staggering 81 zero-days were weaponized, it still represents a significant uptick in recent years of threat actors leveraging unknown security flaws to their advantage. The

Fortinet FortiOS Flaw Exploited in Targeted Cyberattacks on Government Entities

Government entities and large organizations have been targeted by an unknown threat actor by exploiting a security flaw in Fortinet FortiOS software to result in data loss and OS and file corruption. "The complexity of the exploit suggests an advanced actor and that it is highly targeted at governmental or government-related targets," Fortinet researchers Guillaume Lovet and Alex Kong said in an

Backdoor into FortiOS: Chinese Threat Actors Utilize 0-Day

By Deeba Ahmed Chinese hackers are exploiting a previously patched vulnerability found in Fortinet FortiOS SSL-VPN by using new malware called BOLDMOVE. This is a post from HackRead.com Read the original post: Backdoor into FortiOS: Chinese Threat Actors Utilize 0-Day

New Chinese Malware Spotted Exploiting Recent Fortinet Firewall Vulnerability

A suspected China-nexus threat actor exploited a recently patched vulnerability in Fortinet FortiOS SSL-VPN as a zero-day in attacks targeting a European government entity and a managed service provider (MSP) located in Africa. Telemetry evidence gathered by Google-owned Mandiant indicates that the exploitation occurred as early as October 2022, at least nearly two months before fixes were

Attackers Crafted Custom Malware for Fortinet Zero-Day

The "BoldMove" backdoor demonstrates a high level of knowledge of FortiOS, according to Mandiant researchers, who said the attacker appears to be based out of China.

FortiOS Flaw Exploited as Zero-Day in Attacks on Government and Organizations

A zero-day vulnerability in FortiOS SSL-VPN that Fortinet addressed last month was exploited by unknown actors in attacks targeting the government and other large organizations. "The complexity of the exploit suggests an advanced actor and that it is highly targeted at governmental or government-related targets," Fortinet researchers said in a post-mortem analysis published this week. The

CVE-2022-42475: Fortiguard

A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier and FortiProxy SSL-VPN 7.2.0 through 7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests.

Hackers Actively Exploiting Citrix ADC and Gateway Zero-Day Vulnerability

The U.S. National Security Agency (NSA) on Tuesday said a threat actor tracked as APT5 has been actively exploiting a zero-day flaw in Citrix Application Delivery Controller (ADC) and Gateway to take over affected systems. The critical remote code execution vulnerability, identified as CVE-2022-27518, could allow an unauthenticated attacker to execute commands remotely on vulnerable devices and

Fortinet Warns of Active Exploitation of New SSL-VPN Pre-auth RCE Vulnerability

Fortinet on Monday issued emergency patches for a severe security flaw affecting its FortiOS SSL-VPN product that it said is being actively exploited in the wild. Tracked as CVE-2022-42475 (CVSS score: 9.3), the critical bug relates to a heap-based buffer overflow vulnerability that could allow an unauthenticated attacker to execute arbitrary code via specially crafted requests. The company said