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Linux Reverse Engineering Hacker Challenge

The first round results of the Linux Reverse Engineering Hacker Challenge are out! http://www.hackerchallenge.org It was expected that an intermediate hacker with Linux experience should be able to defeat the protection(s) in less than 10 hours. Participants may earn up to $4100 USD. A total of 93 individuals registered to participate in the first Hacker […]

Topic: Linux Hacking, Secure Coding

Linux Kernel 2.6.x PRCTL Core Dump Handling – Local r00t Exploit ( BID 18874 / CVE-2006-2451 )

A working version of the exploit used to escalate privileges to root in the recent Debian breakin, ah another root kernel exploit. It’s to do with the way the kernel handles file permissions (or lack of) on core dumps. Linux kernel is prone to a local privilege-escalation vulnerability. A local attacker may gain elevated privileges […]

Topic: Exploits/Vulnerabilities, Linux Hacking

MORE Sendmail Problems – Signal Handling Vulnerability

OH MY GOD, NOT ANOTHER SENDMAIL FLAW? What’s that? Yah number 1001010102121. Recently, Mark Dowd of ISS discovered a signal handling vulnerability in Sendmail. We don’t see major bugs in software that’s as popular as Sendmail very often (at least, in the Unix world anyways), and that’s probably a good thing. According to sendmail.com, Sendmail […]

Topic: Exploits/Vulnerabilities, Linux Hacking

Some Good Tips to Secure Linux

I came across this while browsing, has some pretty solid stuff, goes deeper than most basic Linux security guides. It has some good sections like this on protection against fork bombs: Fork bombs are programs that keep creating child processes until system resources are all used, they actually aren’t remote exploits because they require a […]

Topic: Linux Hacking