Russian SVR-Linked APT29 Targets JetBrains TeamCity Servers in Ongoing Attacks
Dec 14, 2023
Supply Chain / Cyber Attack
Threat actors affiliated with the Russian Foreign Intelligence Service (SVR) have targeted unpatched JetBrains TeamCity servers in widespread attacks since September 2023. The activity has been tied to a nation-state group known as APT29 , which is also tracked as BlueBravo, Cloaked Ursa, Cozy Bear, Midnight Blizzard (formerly Nobelium), and The Dukes. It's notable for the supply chain attack targeting SolarWinds and its customers in 2020. "The SVR has, however, been observed using the initial access gleaned by exploiting the TeamCity CVE to escalate its privileges, move laterally, deploy additional backdoors, and take other steps to ensure persistent and long-term access to the compromised network environments," cybersecurity agencies from Poland, the U.K., and the U.S. said . The vulnerability in question is CVE-2023-42793 (CVSS score: 9.8), a critical security flaw that could be weaponized by unauthenticated attackers to achieve remote code execution on affec