WALLBLEED: A MEMORY DISCLOSURE VULNERABILITY IN THE GREAT FIREWALL OF CHINA (1 HOUR READ)

Summary from the TLDR InfoSec newsletter

Wallbleed was a vulnerability in China's Great Firewall that leaked memory during DNS query censorship, revealing internal operations. It was partially patched in November 2023 and fully resolved by March 2024. This report outlines how researchers discovered the vulnerability and the ethics of exploiting and disclosing such vulnerabilities.