On 08/10/2013 11:55 AM, Alchemist wrote:
..2013/8/10 <linuxnutster@xxxxxxxxxxxx <mailto:linuxnutster@xxxxxxxxxxxx>> I was just reading about this new malware threat. I'm not clear on how exactly this thing can get installed on a Linux system. Would it require 100% social engineering? I installed Fedora on my elderly mother's last two laptops so she can do her banking without being paranoid about keyloggers, trojans, etc... She is a news hound, so it's only a matter of time before she comes flying at me demanding reassurances. -- Mini gude how Fedora can protect You: 1. Use only official repos/strict package signing, no untrusted package sources. 2. Update browser scope threats, Iced-Tea, Flash-plugin. (whole system, whuh!) 3. Better create two browser profiles, one for everyday usage with Iced-Tea disabled, other one ONLY for internet-banking with Iced-Tea enabled, and tell your mother about the value of such security solution. 4. Disable autorun http://blogs.iss.net/archive/papers/ShmooCon2011-USB_Autorun_attacks_against_Linux.pdf 5. Use SELinux shield: # setsebool -P allow_execstack=0 # setsebool -P allow_execheap=0 # setsebool -P allow_execmod=0 (may break some buggy apps) 6. Set umask 077 in ~/.bashrc (and if needed ~/.gnomerc) to locally or globally(/etc/profile,/etc/bashrc) prevent new planted executables of being execuded. Of course if only system is not for multiuser, and there is no need for binary execution ~/ 7. HoT runs without root, so primary impact will be taking over control of user evironment. Protect important config files from modification, by setting chattr +i.(remove when needed) .bashrc .bash_profile .bash_logout .pam_environment .xinitrc .gnomerc .config/autostart/* and so on 8. Configure firewall, but this is different story, as I know from experience, this is difficult to fit any user browsing desires. But it's worth a try :)
An excellent turorial, thanks! Does HOT rely completely on social engineering or can it penetrate easily via other means? Bearing in mind that we only use offical repos...
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