The post exposes CVE-2024-5830, a bug in Chrome’s V8 that leads to remote code execution by visiting a malicious site. It delves into detailed explanations of object maps and transitions in V8, highlighting the complexities involved with map deprecations. The vulnerability arises when a dictionary map is mistakenly used instead of a fast map, leading to potential corruption. By manipulating out-of-bounds reads, an attacker can gain arbitrary read and write access in the V8 heap, potentially enabling exploits. This technical deep dive showcases the intricate workings of Javascript interpreters, providing valuable insights for understanding and mitigating similar security risks.
https://github.blog/security/vulnerability-research/from-object-transition-to-rce-in-the-chrome-renderer/