The Turin-based club won the Serie A title last season, going unbeaten during the whole league campaign, but their preparations for the new season have been hit by their coach Antonio Conte's 10-month suspension following his role in the Scommessopoli match-fixing scandal.
Despite this setback Buffon believes the club is prepared to challenge on all fronts this season.
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"When you play for a side like Juve you have the ambition and aspirations to try to win everything," the 34-year-old told reporters.
He admitted that it had been the team's desire to earn a place in the Champions League last season, and that after winning the Scudetto they had earned the right to play in Europe's most prestigious competition.
"It’s the right reward for a side who last season achieved something great.
"It is normal that the fans dream of success, just as much as it is normal for players and staff to remain grounded.
"[However] It’s a different environment with respect to last year, there’s more positivity and belief around the place now."
Juventus start their Serie A campaign against Parma on August 25.