2
votes
1answer
30 views

ASLR does not seem to randomize text section

I wanted to make some basic tests on Linux ASLR, so i wrote the following code : #include <stdio.h> void funct(){ int a= 0; } void main(){ int b=0; printf("funct : %p\n", ...
4
votes
2answers
62 views

Does KASLR really provide more security against exploits?

I know all about how ASLR works, and how it has been implemented on both Linux and Windows systems. It provides an extra layer of protection that malware has to take into account. But nowadays with ...
6
votes
2answers
201 views

How often is ASLR randomness refreshed, in Linux?

Most Linux distributions now use ASLR for many programs, to randomize the layout of memory. How often is the randomness used for this changed? If I re-run the same program multiple times, will it ...
0
votes
2answers
131 views

Debian missing security features?

Debian (stable) is a well respected server Linux distro. I was surprised to see that in their hardening walkthrough (https://wiki.debian.org/HardeningWalkthrough) they do not support position ...
15
votes
3answers
1k views

Why doesn't Linux randomize the address of the executable code segment?

I've recently been learning about how ASLR (address space randomization) works on Linux. At least on Fedora and Red Hat Enterprise Linux, there are two kinds of executable programs: Position ...
1
vote
2answers
853 views

How to defeat ASLR in linux kernel? [duplicate]

Possible Duplicate: Stack Overflows - Defeating Canaries, ASLR, DEP, NX is there anyway to disable ASLR in Linux kernel 2.6.32-71.el6.x86_64, with Apache privileges?? I tried this commands: ...
1
vote
2answers
2k views

Any reasons to why not use randomize_va_space?

I've been looking a bit into kernel options for hardening, and there is one that seems to be a good idea to deploy - randomize_va_space. But before I activate that feature I started a google search, ...