After running,
$ ls -l /bin/ping
-rwsr-xr-x 1 root root 34740 Nov 5 2012 /bin/ping
I wonder, why doesn't Ubuntu use capabilities (i.e. raw sockets) rather than setuid?
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¡Attention! In Ubuntu 20.04 there's no cap_net_raw capability yet but bit suid neither!!?? I don't know how ping can be run flawessly if it has rwxr-xr-x permissions and no capabiliy (getcap shows nothing). I can't understand!!– OsquiOct 23, 2020 at 20:14
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Well, I've found the answer myself. It's here: unix.stackexchange.com/questions/592911/…– OsquiOct 23, 2020 at 20:22
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1 Answer
It is considered a bug if a package has overly permissive capabilities, so these cases should be reported. However, they might have already fixed it according to https://bugs.launchpad.net/ubuntu/+source/iputils/+bug/534341
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Since Ubuntu 16.04 uses setuid, how could I use the C# Ping class constructor to avoid the TypeInitializer for 'System.Net.NetworkInformaton.Ping threw an exception error? Thank you.– FrankJul 24, 2016 at 6:28
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@Frank, that is best asked as another question, as it is not a clarification or comment on this answer.– vonbrandSep 22, 2021 at 22:00