Chinese Hackers Exploit Zero-Day Flaws in Ivanti Connect Secure and Policy Secure

A pair of zero-day flaws identified in Ivanti Connect Secure (ICS) and Policy Secure have been chained by suspected China-linked nation-state actors to breach less than 10 customers. Cybersecurity firm Volexity, which identified the activity on the network of one of its customers in the second week of December 2023, attributed it to a hacking group it tracks under the name UTA0178

Zyxel Releases Patches to Fix 15 Flaws in NAS, Firewall, and AP Devices

Zyxel has released patches to address 15 security issues impacting network-attached storage (NAS), firewall, and access point (AP) devices, including three critical flaws that could lead to authentication bypass and command injection. The three vulnerabilities are listed below - CVE-2023-35138 (CVSS score: 9.8) - A command injection vulnerability that could allow an

Google Warns How Hackers Could Abuse Calendar Service as a Covert C2 Channel

Google is warning of multiple threat actors sharing a public proof-of-concept (PoC) exploit that leverages its Calendar service to host command-and-control (C2) infrastructure. The tool, called Google Calendar RAT (GCR), employs Google Calendar Events for C2 using a Gmail account. It was first published to GitHub in June 2023. "The script creates a 'Covert Channel' by exploiting the event

Ghostscript bug could allow rogue documents to run system commands

Even if you've never heard of the venerable Ghostscript project, you may have it installed without knowing.

Alert! Hackers Exploiting Critical Vulnerability in VMware's Aria Operations Networks

VMware has flagged that a recently patched critical command injection vulnerability in Aria Operations for Networks (formerly vRealize Network Insight) has come under active exploitation in the wild. The flaw, tracked as CVE-2023-20887, could allow a malicious actor with network access to the product to perform a command injection attack, resulting in remote code execution. It impacts VMware

Cacti, Realtek, and IBM Aspera Faspex Vulnerabilities Under Active Exploitation

Critical security flaws in Cacti, Realtek, and IBM Aspera Faspex are being exploited by various threat actors in hacks targeting unpatched systems. This entails the abuse of CVE-2022-46169 (CVSS score: 9.8) and CVE-2021-35394 (CVSS score: 9.8) to deliver MooBot and ShellBot (aka PerlBot), Fortinet FortiGuard Labs said in a report published this week. CVE-2022-46169 relates to a critical

Threat Actors Turn to Sliver as Open Source Alternative to Popular C2 Frameworks

The legitimate command-and-control (C2) framework known as Sliver is gaining more traction from threat actors as it emerges as an open source alternative to Cobalt Strike and Metasploit. The findings come from Cybereason, which detailed its inner workings in an exhaustive analysis last week. Sliver, developed by cybersecurity company BishopFox, is a Golang-based cross-platform post-exploitation

Researchers Expose Over 80 ShadowPad Malware C2 Servers

As many as 85 command-and-control (C2) servers have been discovered supported by the ShadowPad malware since September 2021, with infrastructure detected as recently as October 16, 2022. That's according to VMware's Threat Analysis Unit (TAU), which studied three ShadowPad variants using TCP, UDP, and HTTP(S) protocols for C2 communications. ShadowPad, seen as a successor to PlugX, is a modular

Critical Vulnerability Discovered in Atlassian Bitbucket Server and Data Center

Atlassian has rolled out fixes for a critical security flaw in Bitbucket Server and Data Center that could lead to the execution of malicious code on vulnerable installations. Tracked as CVE-2022-36804 (CVSS score: 9.9), the issue has been characterized as a command injection vulnerability in multiple endpoints that could be exploited via specially crafted HTTP requests. <!--adsense--> “An

A Growing Number of Malware Attacks Leveraging Dark Utilities 'C2-as-a-Service'

A nascent service called Dark Utilities has already attracted 3,000 users for its ability to provide command-and-control (C2) services with the goal of commandeering compromised systems. "It is marketed as a means to enable remote access, command execution, distributed denial-of-service (DDoS) attacks and cryptocurrency mining operations on infected systems," Cisco Talos said in a report shared

OpenSSL issues a bugfix for the previous bugfix

Fortunately, it's not a major bugfix, which means it's easy to patch and can teach us all some useful lessons.