Florian Heinz schrieb: > > Hello, > > Under certain conditions it is possible to execute arbitrary code using > a buffer overflow in the recent qpopper. > > You need a valid username/password-combination and code is (depending on > the setup) usually executed with the user's uid and gid mail. > ... > > This is the short version. An enhanced version with error-checking, > bufsize- and return-address autodetection can be found on > http://nstx.dereference.de/snippets/qex.c > > Feedback is welcome. ... and here it comes ;-) I tested http://nstx.dereference.de/snippets/qex.c against 3 selfcompiled qpopper4.0.4 on 3 different machines. I can confirm, that on one machine "it worked", i got a shell. More interesting for me is of course, if you can provide a patch against 4.0.4 to close this vulnerability. Greetings Torsten
