~/talk

A New Era of SSRF - Exploiting URL Parser in Trending Programming Languages!

Talkat CODE BLUE 2017 · 2017-11-07..11-10· [security, compilers-and-language-design]
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Demonstrates a practical exploit chain that turns URL parser inconsistencies into SSRF bypasses and real RCE: a custom fuzzing tool finds parsing mismatches across Python, PHP, Perl, Ruby, Java, JavaScript, Wget and cURL, yielding 20+ zero days in libraries and apps (WordPress, vBulletin, MyBB, GitHub). Shows concrete bugs — curl vs. PHP parsing, double URL decoding, Unicode and SNI hostname tricks, space/newline injections — and a working GitHub Enterprise demo that uses protocol smuggling + memcached object injection to achieve remote code execution.

AI-written summary · about

  1. 0:00Intro
  2. 1:30About Orange Tsai
  3. 5:15Protocol Smuggling in SSRF
  4. 6:26Quick Fun Example
  5. 12:05URL Parsing Issues
  6. 19:21NodeJS Unicode Failure
  7. 22:31GLibc NSS Features
  8. 29:34Abusing IDNA Standard
  9. 31:21Abusing URL Parsers - Case Study
  10. 36:28Protocol Smuggling - Case Study
  11. 46:07Bug Bounty - Case Study
  12. 47:19Mitigations
  13. 48:05Summary
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