Zyxel Issues Critical Security Patches for Firewall and VPN Products

By Deeba Ahmed The attacks, potentially linked to Russian APT Sandworm, exploited vulnerabilities in Zyxel firewalls. This is a post from HackRead.com Read the original post: Forescout Report Uncovers New Details in Danish Energy Hack

The cyber attacks targeting the energy sector in Denmark last year may not have had the involvement of the Russia-linked Sandworm hacking group, new findings from Forescout show. The intrusions, which targeted around 22 Danish energy organizations in May 2023, occurred in two distinct waves, one which exploited a security flaw in Zyxel firewall (CVE-2023-28771) and a

The out-of-bounds write vulnerability in the Windows-based SecuExtender SSL VPN Client software version 4.0.4.0 could allow an authenticated local user to gain a privilege escalation by sending a crafted CREATE message.

Russian threat actors have been possibly linked to what's been described as the "largest cyber attack against Danish critical infrastructure," in which 22 companies associated with the operation of the country's energy sector were targeted in May 2023.  "22 simultaneous, successful cyberattacks against Danish critical infrastructure are not commonplace," Denmark's SektorCERT said [PDF]. "The

Several distributed denial-of-service (DDoS) botnets have been observed exploiting a critical flaw in Zyxel devices that came to light in April 2023 to gain remote control of vulnerable systems. "Through the capture of exploit traffic, the attacker's IP address was identified, and it was determined that the attacks were occurring in multiple regions, including Central America, North America,

By Waqas The DDoS attacks have been observed in various regions, including Central America, North America, East Asia, and South Asia. This is a post from HackRead.com Read the original post: Dark.IoT & Custom Botnets Exploit Zyxel Flaw in DDoS Attacks

Zyxel has rolled out security updates to address a critical security flaw in its network-attached storage (NAS) devices that could result in the execution of arbitrary commands on affected systems. Tracked as CVE-2023-27992 (CVSS score: 9.8), the issue has been described as a pre-authentication command injection vulnerability. "The pre-authentication command injection vulnerability in some Zyxel

This Metasploit module exploits a remote unauthenticated command injection vulnerability in the Internet Key Exchange (IKE) packet decoder over UDP port 500 on the WAN interface of several Zyxel devices. The affected devices are as follows: ATP (Firmware version 4.60 to 5.35 inclusive), USG FLEX (Firmware version 4.60 to 5.35 inclusive), VPN (Firmware version 4.60 to 5.35 inclusive), and ZyWALL/USG (Firmware version 4.60 to 4.73 inclusive). The affected devices are vulnerable in a default configuration and command execution is with root privileges.

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday placed two recently disclosed flaws in Zyxel firewalls to its Known Exploited Vulnerabilities (KEV) 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

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a recently patched critical security flaw in Zyxel gear to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation. Tracked as CVE-2023-28771 (CVSS score: 9.8), the issue relates to a command injection flaw impacting different firewall models that could enable an unauthenticated attacker

By Deeba Ahmed A variant of the Mirai botnet is targeting Zyxel Firewalls after exploiting a newly patched operating system command injection vulnerability. This is a post from HackRead.com Read the original post: Mirai Malware Hits Zyxel Devices After Command Injection Bug

Categories: Exploits and vulnerabilities Categories: News Zyxel has released a security advisory about two critical vulnerabilities that could allow an unauthorized, remote attacker to take control of its firewall devices. (Read more...) The post Zyxel patches two critical vulnerabilities appeared first on Malwarebytes Labs.

A buffer overflow vulnerability in the ID processing function in Zyxel ATP series firmware versions 4.32 through 5.36 Patch 1, USG FLEX series firmware versions 4.50 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.25 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.25 through 5.36 Patch 1, VPN series firmware versions 4.30 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.25 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device.

A buffer overflow vulnerability in the ID processing function in Zyxel ATP series firmware versions 4.32 through 5.36 Patch 1, USG FLEX series firmware versions 4.50 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.25 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.25 through 5.36 Patch 1, VPN series firmware versions 4.30 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.25 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device.

Networking equipment maker Zyxel has released patches for a critical security flaw in its firewall devices that could be exploited to achieve remote code execution on affected systems. The issue, tracked as CVE-2023-28771, is rated 9.8 on the CVSS scoring system. Researchers from TRAPA Security have been credited with reporting the flaw. "Improper error message handling in some firewall versions

Improper error message handling in Zyxel ZyWALL/USG series firmware versions 4.60 through 4.73, VPN series firmware versions 4.60 through 5.35, USG FLEX series firmware versions 4.60 through 5.35, and ATP series firmware versions 4.60 through 5.35, which could allow an unauthenticated attacker to execute some OS commands remotely by sending crafted packets to an affected device.