GSA Bounty: Information disclosure (system username, server info) in the x-amz-meta-s3cmd-attrs response header on data.gov

Hi Team, I noticed, that the x-amz-meta-s3cmd-attrs response header returns sensitive information, like system username on data.gov x-amz-meta-s3cmd-attrs: uid:0/gname:root/uname:root/gid:0/mode:33184/mtime:1513269652/atime:1513269652/md5:2049644b6b833f5dbb826f60a4721f64/ctime:1513269652 Server:...

GSA Bounty: Information disclosure (system username) in the x-amz-meta-s3cmd-attrs response header on federation.data.gov

Description Hi. I just noticed, that you are extended the scope for the bounty program. I looked to the first resource - https://federation.data.gov/ I noticed, that the x-amz-meta-s3cmd-attrs response header returns sensitive information, like system username:...