[Vserver] do_brk exploit...vserver

[Lu�s Miguel Silva]

Hello all,   I know the do_brk vulnerability is “a thing of the past” but, I just tried out the exploit on one of my vservers just to see what happened.   [EMAIL PROTECTED]:~$ id uid=1009(lms) gid=100(users) groups=100(users) [EMAIL PROTECTED]:~$ ./kernel [-] Unable to change page protection: Cannot allocate memory [-] Unable to exit, entering neverending loop.   [1]+� Stopped���������������� ./kernel [EMAIL PROTECTED]:~$ uname -a Linux mail.whocares.org 2.4.21-ctx17 #1 SMP Tue Sep 16 15:04:08 WEST 2003 i686 GNU/Linux [EMAIL PROTECTED]:~$   And now for a developer question: is a local kernel root exploit able to break the vserver environment?   If a normal user was to successfully exploit a vserver with a local exploit would he: a)       be root on the vserver? b)       Be root on the root server? c)       None of the above. Aliens would invade earth and it would rain chocolate candy…heh   Best, +------------------------------------------- | Lu�s Miguel Silva | Network Administrator@ ISPGaya.pt | Rua Ant�nio Rodrigues da Rocha, 291/341 | Sto. Ov�dio • 4400-025 V. N. de Gaia | Portugal | T: +351 22 3745730/3/5� F: +351 22 3745738 | G: +351 93 6371253����� E: [EMAIL PROTECTED] | H: http://lms.ispgaya.pt/ +-------------------------------------------