Hackers exploit VMware ESXi, Microsoft SharePoint zero-days at Pwn2Own

During the second day of Pwn2Own Berlin 2025, competitors earned $435,000 after exploiting zero-day bugs in multiple products, including Microsoft SharePoint, VMware ESXi, Oracle VirtualBox, Red Hat Enterprise Linux, and Mozilla Firefox. Palo Alto Networks' Edouard Bochin and Tao Yan also demoed an out-of-bounds write zero-day in Mozilla Firefox, while Gerrard Tai of STAR Labs SG escalated privileges to root on Red Hat Enterprise Linux using a use-after-free bug, and Viettel Cyber Security used another out-of-bounds write for an Oracle VirtualBox guest-to-host escape. On the last day of the contest, the hackers will attempt to exploit zero-day bugs in Windows 11, Oracle VirtualBox, VMware ESXi, VMware Workstation, Mozilla Firefox, as well as Nvidia's Triton Inference Server and Container Toolkit. On the first day, competitors were awarded $260,000 after successfully exploiting zero-day vulnerabilities in Windows 11, Red Hat Linux, and Oracle VirtualBox, reaching a total of $695,000 earned over the first two days of the contest after demonstrating 20 unique 0-days. Security researchers will be able to earn over $1,000,000 in rewards for demonstrating zero-day bugs in fully patched products in the AI, web browser, virtualization, local privilege escalation, servers, enterprise applications, cloud-native/container, and automotive categories. In the AI category, Wiz Research security researchers used a use-after-free zero-day to exploit Redis and Qrious Secure chained four security flaws to hack Nvidia's Triton Inference Server. After zero-day exploits are disclosed during the Pwn2Own contest, vendors have 90 days to release security fixes for their software and hardware products before Trend Micro's Zero Day Initiative publishes technical details. Dinh Ho Anh Khoa of Viettel Cyber Security was awarded $100,000 for hacking Microsoft SharePoint by leveraging an exploit chain combining an auth bypass and an insecure deserialization flaw.

This Cyber News was published on www.bleepingcomputer.com. Publication date: Fri, 16 May 2025 15:25:09 +0000


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