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Why do we need to setuid a program like ping?
1 Answer. ping needs to generate and receive ICMP packets, and usually that’s done using “raw sockets” – a feature limited to root (cap_net_raw) because it could also be abused to sniff and disrupt other traffic on the system.
Is ping setuid?
ping and ping6 need root access to use raw sockets. See this Super User post and this Unix & Linux post. As the SU answer notes, some distros now use capabilities instead of setuid — my Arch Linux system doesn’t have setuid on ping . (note: the crontab directory is also sticky.)
How do you determine the process capabilities?
Although that works, there is another and easier way. To see the capabilities of a running process, simply use the getpcaps tool followed by its process ID (PID). You can also provide a list of process IDs.
What are file capabilities?
File Capability: File capabilities aim to provide fine-grained control over root permissions. These capabilities are a partitioning of the all root privileges into a set of distinct and independent privileges. Using this functionality, reduces/prevents the need to switch as the root user.
What is Capsh?
DESCRIPTION top. Linux capability support and use can be explored and constrained with this tool. This tool provides a handy wrapper for certain types of capability testing and environment creation. It also provides some debugging features useful for summarizing capability state.
What do you understand by capability?
1 : the quality or state of being capable also : ability The mayor has demonstrated his capability to handle municipal problems. 2 : a feature or faculty capable of development : potentiality This vacant urban district has great capabilities.
How do Linux capabilities work?
Linux capabilities are special attributes in the Linux kernel that grant processes and binary executables specific privileges that are normally reserved for processes whose effective user ID is 0 (The root user, and only the root user, has UID 0).