InfoSecBulletin Cybersecurity for mankind
CERT Germany and Zyxel have alerted about a serious vulnerability in Zyxel firewalls, identified as CVE-2024-11667. This flaw is being exploited to spread Helldown ransomware, with reports of at least five affected organizations in Germany.
CVE-2024-11667 is a directory traversal vulnerability in Zyxel’s ZLD firmware versions 5.00 to 5.38. Exploiting it allows attackers to upload and download files using crafted URLs, which can compromise sensitive information like system credentials. This may lead to further attacks, such as creating rogue VPN connections and changing firewall settings.
Five new malware families actively targeting Asian Gov.t infra
T-Mobile Cuts Cables to Remove Chiness Salt Typhoon Hackers from Network
Splunk, Zyxel Patch Multiple Flaws Enabling RCE and Root Command Execution
“Zombie Card” attack revels expired Visa card may be used for contactless payments
Critical Zimbra RCE Flaw Actively Exploited in the Wild
Operation CameraSwarm
A single hacker compromise 1400+ Dahua camera worldwide
Cl0p Ransomware Listed 40+ Victims of PTC Windchill Campaign
Oracle Issues 943 Security Patches, Including Critical WebLogic Flaw
500+ critical infrastructure hit by Medusa ransomware
Critical WordPress Plugin Flaw Exposes 600,000 Sites to Attacks
The affected devices include:
Zyxel ATP and USG FLEX series firewalls in on-premise mode, using ZLD firmware versions 4.32 to 5.38 with remote management or SSL VPN enabled. Devices using Nebula cloud management are not affected.
Initial Release date: 21, November 2024
Updated date: 27, November-2024
Current Date: November 29, 202
Zyxel Europe was reportedly one of the victims.
At least 32 victims worldwide have been reported on Helldown’s data leak site
According to CERT-Bund, five German groups are potential targets
To keep your network safe, Zyxel suggests taking these steps:
Update Firmware: Update your device to the latest firmware..
Disable Remote Access: If updates can’t be applied right away, temporarily turn off remote access to your device until the firmware is patched.
Review Best Practices: Review general cybersecurity guidelines.
