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Revision:  517352
Date:      2019-11-12
Time:      21:38:20Z
Committer: gjb

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VuXML IDDescription
0f154810-16e4-11e5-a1cf-002590263bf5rubygem-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, because a file named .html and containing actual HTML passes the spoof check.

This change makes it so that we also check the supplied content type. So even if the file contains HTML and ends with .html, it doesn't match the content type of `image/jpeg` and so it fails.


Discovery 2015-06-05
Entry 2015-06-22
rubygem-paperclip
lt 4.2.2

CVE-2015-2963
https://github.com/thoughtbot/paperclip/commit/9aee4112f36058cd28d5fe4a006d6981bd1eda57
https://robots.thoughtbot.com/paperclip-security-release
http://jvn.jp/en/jp/JVN83881261/index.html