Brake Squeaking Noise problems of the 2009 Subaru Impreza Wrx

When I bought the car from the used car lot I noticed the clutch pedal when being pressed and depressed made a squeaking noise. I figured it was probably lack of lubrication so I went ahead and lubricated the pedal assembly and the noise stayed the same. Couple months go by and the noise got much louder and sometimes a loud pop would occur. Recently I did some research and found out that many other wrx owners have had the same issue. So I followed the procedures to check the cause of the noise and it seems to be that the welds on the firewall have been broken and are causing the noise. I also noticed my brake pedal shifts every time I press the clutch pedal. As time progresses it feels as if its getting harder to shift. I'm afraid that this issue is causing premature wear of the transmission. Every time I press the clutch pedal I fear that the clutch pedal assembly is going to rip off the firewall.