..2013/8/10 <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.
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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)
# 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/*
.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 :)
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