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May 4-6 at Taipei Nangang Exhibition Center, Hall 2



Software Engineer, IBM

A 10-year experience software engineer, and also have the hacker spirit. Found vulnerabilities on Slack, Google, Facebook.

Taiwan's Cybersecurity Researchers
701 Vulnerability Research Lab
  • May 6th (Thu)
  • 10:00 - 10:30
  • 7F 701H

What makes Slack vulnerable to blind SSRF attack
Chinese Onsite

In this session, I'll explain the meaning and purpose of the different X-Forwarded-XXX headers. Next, I'll show how the attackers can bypass the IP Ban by the application via the wrong setting of X-Forwarded-For, or even ban other victim's IP. Last, I'll demo the blind SSRF vulnerabilities I found in Slack, which is due to the misconfiguration of the X-Forwarded-Host setting. It should make everyone knows more about the X-Forwarded-XXX headers.

SecDevOpsWeb SecurityWeb Service Security
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