| 1 |
Hi, |
| 2 |
|
| 3 |
this is my first message here, I hope I'm not off-topic! |
| 4 |
|
| 5 |
I've been reading [1], and tried on my gentoo system: |
| 6 |
|
| 7 |
fser@regal /tmp$ ./aslr-test-without |
| 8 |
main @ 0x4005da |
| 9 |
doit @ 0x40059b |
| 10 |
fser@regal /tmp$ ./aslr-test-without |
| 11 |
main @ 0x4005da |
| 12 |
doit @ 0x40059b |
| 13 |
fser@regal /tmp$ ./aslr-test-without |
| 14 |
main @ 0x4005da |
| 15 |
doit @ 0x40059b |
| 16 |
|
| 17 |
|
| 18 |
and |
| 19 |
|
| 20 |
fser@regal /tmp$ ./aslr-test-withpie |
| 21 |
main @ 0x468f410820 |
| 22 |
doit @ 0x468f4107e1 |
| 23 |
fser@regal /tmp$ ./aslr-test-withpie |
| 24 |
main @ 0x6d8a0f9820 |
| 25 |
doit @ 0x6d8a0f97e1 |
| 26 |
fser@regal /tmp$ ./aslr-test-withpie |
| 27 |
main @ 0x33eb5d8820 |
| 28 |
doit @ 0x33eb5d87e1 |
| 29 |
fser@regal /tmp$ ./aslr-test-withpie |
| 30 |
main @ 0x769c4a5820 |
| 31 |
doit @ 0x769c4a57e1 |
| 32 |
|
| 33 |
I was under the impression that ASLR was enforced by the kernel, when |
| 34 |
creating a new context for a process. |
| 35 |
Reading the description of [1], I was expecting the adress of main (at |
| 36 |
least) to be different. |
| 37 |
|
| 38 |
Can someone explain me this behavior? |
| 39 |
|
| 40 |
Thank you! |
| 41 |
|
| 42 |
|
| 43 |
[1] |
| 44 |
https://wiki.gentoo.org/wiki/Hardened/PaX_Quickstart#Address_Space_Layout_Randomization_.28ASLR.29 |
| 45 |
|
| 46 |
-- |
| 47 |
François |
Archives