Bugzilla: Attach a File to a Bug Report
Find the bug report that you want to edit.
Click on the Add an Attachment link to view the Create New Attachment page.
Complete the Create New Attachment form.
File: Click the Browse button and select the file you want to attach.
Description: Enter a short descriptive name for the file.
Content Type: Check the auto-detect radio button
Obsoletes: (optional) Check each existing attachment that you want to delete.
Comment: (optional) Add a comment about the attachment to the bug.
Click the Submit button.