Security News

Fortinet has released several versions of FortiOS, the OS/firmware powering its Fortigate firewalls and other devices, without mentioning that they include a fix for CVE-2023-27997, a remote code execution flaw that does not require the attacker to be logged in to exploit it. The vulnerability has been fixed in FortiOS versions 7.2.5, 7.0.12, 6.4.13, 6.2.15 and, apparently also in v6.0.17.

The U.S. Cybersecurity and Infrastructure Security Agency on Monday placed two recently disclosed flaws in Zyxel firewalls to its Known Exploited Vulnerabilities catalog, based on evidence of active exploitation. The vulnerabilities, tracked as CVE-2023-33009 and CVE-2023-33010, are buffer overflow vulnerabilities that could enable an unauthenticated attacker to cause a denial-of-service condition and remote code execution.

Zyxel has published a security advisory containing guidance on protecting firewall and VPN devices from ongoing attacks and detecting signs of exploitation. This warning comes in response to multiple reports of widespread exploitation of the CVE-2023-28771 and the exploitability and severity of CVE-2023-33009 and CVE-2023-33010, all impacting Zyxel VPN and firewall devices.

CVE-2023-28771, the critical command injection vulnerability affecting many Zyxel firewalls, is being actively exploited by a Mirai-like botnet, and has been added to CISA's Known Exploited Vulnerabilities catalog. CVE-2023-28771 is a vulnerability that allows unauthenticated attackers to execute OS commands remotely by sending crafted IKE packets to an affected device.

Hackers are performing widespread exploitation of a critical-severity command injection flaw in Zyxel networking devices, tracked as CVE-2023-28771, to install malware. The flaw, which is present in the default configuration of impacted firewall and VPN devices, can be exploited to perform unauthenticated remote code execution using a specially crafted IKEv2 packet to UDP port 500 on the device.

Wireless Broadband Alliance CEO on key drivers for Wi-Fi adoption in enterprise networksThis Help Net Security interview with Tiago Rodrigues, CEO at Wireless Broadband Alliance, delves into the future of enterprise networking, exploring the significant role of Wi-Fi 6E and Private 5G. Navigating the quantum leap in cybersecurityIn this Help Net Security interview, we sit down with Dr. Atsushi Yamada, the newly appointed CEO of ISARA, a security solutions company specializing in creating quantum-safe cryptography. Barracuda email security appliances hacked via zero-day vulnerabilityA vulnerability in Barracuda Networks' Email Security Gateway appliances has been exploited by attackers, the company has warned.

Zyxel has released software updates to address two critical security flaws affecting select firewall and VPN products that could be abused by remote attackers to achieve code execution. Both the flaws - CVE-2023-33009 and CVE-2023-33010 - are buffer overflow vulnerabilities and are rated 9.8 out of 10 on the CVSS scoring system.

Zyxel is warning customers of two critical-severity vulnerabilities in several of its firewall and VPN products that attackers could leverage without authentication. CVE-2023-33009: A buffer overflow vulnerability in the notification function in some Zyxel products, allowing an unauthenticated attacker to perform remote code execution or impose DoS conditions.

A recently fixed command injection vulnerability affecting a variety Zyxel firewalls may soon be exploited in the wild, Rapid7 researchers have warned, after publishing a technical analysis and a PoC script that triggers the vulnerability and achieves a reverse root shell. Zyxel APT, USG FLEX, and VPN firewalls running versions v4.60 to v5.35 of the ZDL firmware, and.

With an increasing number of endpoints and expanding attack surfaces, dodgy apps can offer a way around your firewall. Let's explore why cybersecurity leaders should take matters into their own hands - rather than waiting for the government - and blacklist certain apps from their network.