This page describes the various fields that you see on a bug.

The field indicates the current state of a bug. Only certain status transitions are allowed. The field indicates what happened to this bug.
Open Bugs
UNCONFIRMED
This bug has recently been added to the database. Nobody has confirmed that this bug is valid. Users who have the "canconfirm" permission set may confirm this bug, changing its state to CONFIRMED. Or, it may be directly resolved and marked RESOLVED.
CONFIRMED
This bug is valid and has recently been filed. Bugs in this state become IN_PROGRESS when somebody is working on them, or become resolved and marked RESOLVED.
IN_PROGRESS
This bug is not yet resolved, but is assigned to the proper person who is working on the bug. From here, bugs can be given to another person and become CONFIRMED, or resolved and become RESOLVED.
No resolution yet. All bugs which are in one of these "open" states have no resolution set.
Closed Bugs
RESOLVED
A resolution has been performed, and it is awaiting verification by QA. From here bugs are either reopened and given some open status, or are verified by QA and marked VERIFIED.
VERIFIED
QA has looked at the bug and the resolution and agrees that the appropriate resolution has been taken. This is the final status for bugs.
FIXED
A fix for this bug is checked into the tree and tested.
INVALID
The problem described is not a bug.
WONTFIX
The problem described is a bug which will never be fixed.
DUPLICATE
The problem is a duplicate of an existing bug. When a bug is marked as a DUPLICATE, you will see which bug it is a duplicate of, next to the resolution.
WORKSFORME
All attempts at reproducing this bug were futile, and reading the code produces no clues as to why the described behavior would occur. If more information appears later, the bug can be reopened.

Other Fields

The person responsible for confirming this bug if it is unconfirmed, and for verifying the fix once the bug has been resolved.
Comment Tag
A custom Unknown Type field in this installation of Bugzilla.
Importance
The importance of a bug is described as the combination of its and .
Votes
Some bugs can be voted for, and you can limit your search to bugs with more than a certain number of votes.