Auction.com - does it pay off all liens or just current lien with a short sale?

[Jerry Padilla]

we are looking into making an offer on a short sale property that is being offered at auction.com. With our own research we found that they owner hasn't paid the taxes since 2009 and they are currently held by another lien holder. The taxes owed are about $45,000 and the house could only resell for between $100,000 -$110,000. It makes a big difference what offer we make if we have to pay the back taxes and no where can we even find them disclosing the back taxes. We found thst they were owed by going to the county records. It is a bank approved short sale.