Europe, North America Most Impacted by 3CX Supply Chain Hack

Organizations in Europe, North America and Australia seem to account for the highest percentage of victims of the supply chain hack that hit business communication company 3CX.

According to data collected by Fortinet, based on the number of devices connecting to attacker-controlled infrastructure, the highest percentage of victims is in Italy, followed by Germany, Austria, the United States, South Africa, Australia, Switzerland, the Netherlands, Canada and the United Kingdom. 

Looking at regional data, Europe is at the top of the chart with 60%, followed by North America with 16%. 

“This may indicate that the threat actor is mainly targeting enterprises in those regions – however, this is uncertain. This could be indicative of 3CX product’s geographic customer base – including the possibility of various multinational corporations operating inside those regions,” Fortinet noted. 

BlackBerry’s security researchers have also seen many apparent victims in Australia, the United States and the United Kingdom, across the healthcare, pharmaceutical, IT, and financial sectors. 

3CX’s VoIP software is used by more than 600,000 companies worldwide, including major consumer brands, airlines, carmakers and hotels. 

Security firm Huntress noted last week that there are more than 240,000 3CX phone system management consoles that are accessible from the internet, and the company saw over 2,700 instances of compromised binaries on customer systems. 

It was previously reported that the attackers likely had access to 3CX systems for months before the breach was detected. Based on BlackBerry’s own analysis, “the initial phase of this operation took place somewhere between the end of summer and the beginning of fall 2022.”

[ Read: 3CX Supply Chain Hack: Information and Tools for Defenders ]

It’s still unclear how the attackers gained access to 3CX systems, and whether they exploited any known or unknown vulnerability for initial access, but the new identifier CVE-2023-29059 has been assigned to the 3CXDesktopApp compromise. 

Bleeping Computer also reported that the attackers appear to have exploited CVE-2013-3900, a file signature-related vulnerability for which…