Collaborate Disseminate
So I tried performing a return-to-libc according to https://sploitfun.wordpress.com/2015/05/08/bypassing-nx-bit-using-return-to-libc/ .
I found libc’s address by using “ldd vuln”, and found system’s offset by using “readelf -s /lib/i386-l… Continue reading return to libc- finding libc’s address and finding offsets
I’m exercising with ROP. In a vulnerable program I control the RIP, use “ropeme” and search for gadgets I find many references to 32 bits long registers, but not a single extended register.
I need a simple “pop rdi; ret;” t… Continue reading How to increase gadget occurence in a program
I’m exercising with ROP. In a vulnerable program I control the RIP, use “ropeme” and search for gadgets I find many references to 32 bits long registers, but not a single extended register.
I need a simple “pop rdi; ret;” t… Continue reading How to increase gadget occurence in a program
I was reading this article by the InfoSec institute:
http://resources.infosecinstitute.com/an-introduction-to-returned-oriented-programming-linux/#gref
And was able to follow along until he did the ROP Chain.
He finds the … Continue reading How to bypass ASLR with ROP
I was reading this article by the InfoSec institute:
http://resources.infosecinstitute.com/an-introduction-to-returned-oriented-programming-linux/#gref
And was able to follow along until he did the ROP Chain.
He finds the … Continue reading How to bypass ASLR with ROP
If i’m correct, due ASLR we load libc into some random address. And then in order to make that happen without allowing write permissions of text pages within memory we use plt/got. Now I can simply jump back into some libc@pl… Continue reading Is ASLR useless in preventing attacks such as return-to-libc in linux?
If i’m correct, due ASLR we load libc into some random address. And then in order to make that happen without allowing write permissions of text pages within memory we use plt/got. Now I can simply jump back into some libc@plt function tha… Continue reading Is ASLR useless in preventing attacks such as return-to-libc in linux?
Is the new glibc getaddrinfo vulnerability really GHOST 2.0? Signs point to yes, so organizations should patch this vulnerability immediately.
The post The New Glibc Getaddrinfo Vulnerability: Is It GHOST 2.0? appeared first on Security Intelligence.
Continue reading The New Glibc Getaddrinfo Vulnerability: Is It GHOST 2.0?
So the Internet exploded this week with news of a pretty serious glibc exploit, something that everyone pays attention to as every Linux server uses this library and in some cases it can yield remote code execution. In basic terms the glibc DNS client (libresolv) is vulnerable to a stack-based buffer overflow when the getaddrinfo() […]
The…
Read the full post at darknet.org.uk
Continue reading The Linux glibc Exploit – What You Need To Know
GNU glibc contains a buffer overflow vulnerability in the DNS resolver,which may allow a remote attacker to execute arbitrary code. Continue reading VU#457759: glibc vulnerable to stack buffer overflow in DNS resolver