Problems with sshd after kernel update (Debian)

My hoster updated the Linux kernel on my Debian system to 2.6.18-028stab070.5. After the update it wasn't possible to connect by ssh anymore.

Booted the system in recovery mode. /var/log/auth.log showed the following errors:

 error writing /proc/self/oom_adj: Operation not permitted error: Bind to port 22 on a.b.c.d failed: Cannot assign requested address. fatal: Cannot bind any address.

The following changes fixed the problem:

/etc/defaults/ssh:

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Paper about obfuscation of JavaScript

Here’s a nice paper about obfuscation techniques used for JavaScript: “Malware with your Mocha? Obfuscation and antiemulation tricks in malicious JavaScript.” http://www.sophos.com/security/technical-papers/malware_with_your_mocha.html [...]

Hex-Editors

Here's a nice comparison of hex editors:

http://blogs.sans.org/computer-forensics/2010/09/29/hex-editors-for-malware-analysis/

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Turning the Tables – Part I

Nice post about the Zeus C&C server: http://xs-sniper.com/blog/2010/09/27/turning-the-tables/ [...]

X won’t start after installation of VMware tools on Backtrack 4

Reboot. On the console do a fix-vesa. That's it.

See also: http://www.backtrack-linux.org/forums/backtrack-fixes/8-cant-get-resolution-go-beyond-1024×768-backtrack-vm-image.html

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Detecting live hosts on a target network

Nice post about network device discovery: http://securitylifer.blogspot.com/2010/09/detecting-live-hosts-on-target-network.html [...]

PsExec and the Nasty Things It Can Do

Nice post about OsExec:

http://www.windowsecurity.com/articles/PsExec-Nasty-Things-It-Can-Do.html

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RunInsideLimitedJob

Nice post about limiting the number of processes an executable might spawn: http://blog.didierstevens.com/2010/09/13/runinsidelimitedjob/ [...]

Software Tester’s Day

Top 24 replies by programmers when their programs don’t work: http://testavimas.blogspot.com/2008/09/testers-day.html [...]

SNMP

Nice blog post about gathering information using SNMP: http://www.attackvector.org/compromising-hosts-with-snmp/ [...]