rubygem-paperclip -- validation bypass vulnerability

Jon Yurek reports: Thanks to MORI Shingo of DeNA Co., Ltd. for reporting this. There is an issue where if an HTML file is uploaded with a .html extension, but the content type is listed as being image/jpeg, this will bypass a validation checking for images. But it will also pass the spoof check,...

Paperclip Gem for Ruby vulnerable to content type spoofing

There is an issue where if an HTML file is uploaded with a .html extension, but the content type is listed as being image/jpeg, this will bypass a validation checking for images. But it will also pass the spoof check, because a file named .html and containing actual HTML passes the spoof check...

HackerOne: PNG compression DoS

ztxt: http://www.libpng.org/pub/png/spec/1.1/PNG-Chunks.htmlC.zTXt "zTXT Documentation" tech: http://www.zlib.net/zlibtech.html "zlib technical details" zlibvuln1: http://www.kb.cert.org/vuls/id/680620 zlibvuln2: http://www.kb.cert.org/vuls/id/238678 PNG compression DoS ---------------------...