Security Fix for Path Traversal - huntr.dev #36
Merged
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https://huntr.dev/users/Mik317 has fixed the Path Traversal vulnerability🔨 . Mik317 has been awarded $25 for fixing the vulnerability through the huntr bug bounty program 💵 . Think you could fix a vulnerability like this?
Get involved at https://huntr.dev/
Q | A
Version Affected | ALL
Bug Fix | YES
Original Pull Request | 418sec#1
Vulnerability README | https://github.com/418sec/huntr/blob/master/bounties/npm/httpster/1/README.md
User Comments:
Bounty URL: https://www.huntr.dev/bounties/1-npm-httpster
The
httpsterfile server was vulnerable against apath traversalissue which existed becausesymlinkswere fetched and their content served without any warn/error.I inserted a
new routerinside theexpressserver which was created byhttpsterand usedfs.lstatto check if the requested file is or not asymlink.In case it is and the
--symlinkflag isn't specified by the server (defaultfalselike in other servers likeNginx), an error is thrown.httpsterln -s /etc/passwd testhttpster/etc/passwdfile is shown/etc/passwdfilehttpster --symlinkand the/etc/passwdfile is shown (option)All ok😄