What does the “ep” capability mean?
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root@macine:~# getcap ./some_bin
./some_bin =ep
What does "ep" mean? What are the capabilities of this binary?
linux capabilities
edited 7 mins ago
muru
38.1k590166
asked 2 hours ago
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root@macine:~# getcap ./some_bin
./some_bin =ep
What does "ep" mean? What are the capabilities of this binary?
linux capabilities
edited 7 mins ago
muru
38.1k590166
asked 2 hours ago
JamesJames
162
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James is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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1
capabilities(7)have nothing to do with selinux. That file has all possible capabilities set.
– mosvy
2 hours ago
vulp3cula.gitbook.io/hackers-grimoire/post-exploitation/…
– Jesse_b
2 hours ago
add a comment |
root@macine:~# getcap ./some_bin
./some_bin =ep
What does "ep" mean? What are the capabilities of this binary?
linux capabilities
edited 7 mins ago
muru
38.1k590166
asked 2 hours ago
JamesJames
162
New contributor
James is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
root@macine:~# getcap ./some_bin
./some_bin =ep
What does "ep" mean? What are the capabilities of this binary?
linux capabilities
linux capabilities
edited 7 mins ago
muru
38.1k590166
asked 2 hours ago
JamesJames
162
New contributor
James is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 7 mins ago
muru
38.1k590166
asked 2 hours ago
JamesJames
162
New contributor
James is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 7 mins ago
muru
38.1k590166
edited 7 mins ago
muru
38.1k590166
edited 7 mins ago
muru
38.1k590166
38.1k590166
asked 2 hours ago
JamesJames
162
New contributor
James is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 hours ago
JamesJames
162
asked 2 hours ago
JamesJames
162
162
New contributor
James is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
James is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
James is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
1
capabilities(7)have nothing to do with selinux. That file has all possible capabilities set.
– mosvy
2 hours ago
vulp3cula.gitbook.io/hackers-grimoire/post-exploitation/…
– Jesse_b
2 hours ago
add a comment |
1
capabilities(7)have nothing to do with selinux. That file has all possible capabilities set.
– mosvy
2 hours ago
vulp3cula.gitbook.io/hackers-grimoire/post-exploitation/…
– Jesse_b
2 hours ago
1
1
capabilities(7) have nothing to do with selinux. That file has all possible capabilities set.– mosvy
2 hours ago
capabilities(7) have nothing to do with selinux. That file has all possible capabilities set.– mosvy
2 hours ago
vulp3cula.gitbook.io/hackers-grimoire/post-exploitation/…
– Jesse_b
2 hours ago
vulp3cula.gitbook.io/hackers-grimoire/post-exploitation/…
– Jesse_b
2 hours ago
add a comment |
2 Answers
2
active
oldest
votes
# getcap ./some_bin
./some_bin =ep
That file has ALL the capabilites set in the effective(e) and permitted(p) set.
In the textual representation of capabilities, a leading = is equivalent to all=.
From the cap_to_text(3) manpage:
In the case that the leading operator is
=, and no list of capabilities is provided, the action-list is assumed to refer to all capabilities. For example, the following three clauses are equivalent to each
other (and indicate a completely empty capability set):all=;=;
cap_chown,<every-other-capability>=.
Such a binary can do whatever it pleases. Notice that this is only a "gotcha" of the textual representation used by libpcap: in the security.capability extended attribute of the file for which getcap will print /file/path =ep, all the meaningful bits are effectively on; for an empty security.capability, /file/path = (with the = not followed by anything) will be returned instead.
answered 1 hour ago
mosvymosvy
10.8k11340
add a comment |
The capabilities are put in the permitted set (p), and all permitted capabilities are copied into the effective set (e). There does not seem to be any capabilities in your example (where did you get it from?).
The e is used for legacy programs (possibly most programs at the current time), that is programs that don't know about capabilities, so can not them-selves copy capabilities from permitted to effective.
answered 2 hours ago
ctrl-alt-delorctrl-alt-delor
12.7k52663
add a comment |
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2 Answers
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2 Answers
2
active
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active
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votes
# getcap ./some_bin
./some_bin =ep
That file has ALL the capabilites set in the effective(e) and permitted(p) set.
In the textual representation of capabilities, a leading = is equivalent to all=.
From the cap_to_text(3) manpage:
In the case that the leading operator is
=, and no list of capabilities is provided, the action-list is assumed to refer to all capabilities. For example, the following three clauses are equivalent to each
other (and indicate a completely empty capability set):all=;=;
cap_chown,<every-other-capability>=.
Such a binary can do whatever it pleases. Notice that this is only a "gotcha" of the textual representation used by libpcap: in the security.capability extended attribute of the file for which getcap will print /file/path =ep, all the meaningful bits are effectively on; for an empty security.capability, /file/path = (with the = not followed by anything) will be returned instead.
answered 1 hour ago
mosvymosvy
10.8k11340
add a comment |
# getcap ./some_bin
./some_bin =ep
That file has ALL the capabilites set in the effective(e) and permitted(p) set.
In the textual representation of capabilities, a leading = is equivalent to all=.
From the cap_to_text(3) manpage:
In the case that the leading operator is
=, and no list of capabilities is provided, the action-list is assumed to refer to all capabilities. For example, the following three clauses are equivalent to each
other (and indicate a completely empty capability set):all=;=;
cap_chown,<every-other-capability>=.
Such a binary can do whatever it pleases. Notice that this is only a "gotcha" of the textual representation used by libpcap: in the security.capability extended attribute of the file for which getcap will print /file/path =ep, all the meaningful bits are effectively on; for an empty security.capability, /file/path = (with the = not followed by anything) will be returned instead.
answered 1 hour ago
mosvymosvy
10.8k11340
add a comment |
# getcap ./some_bin
./some_bin =ep
That file has ALL the capabilites set in the effective(e) and permitted(p) set.
In the textual representation of capabilities, a leading = is equivalent to all=.
From the cap_to_text(3) manpage:
In the case that the leading operator is
=, and no list of capabilities is provided, the action-list is assumed to refer to all capabilities. For example, the following three clauses are equivalent to each
other (and indicate a completely empty capability set):all=;=;
cap_chown,<every-other-capability>=.
Such a binary can do whatever it pleases. Notice that this is only a "gotcha" of the textual representation used by libpcap: in the security.capability extended attribute of the file for which getcap will print /file/path =ep, all the meaningful bits are effectively on; for an empty security.capability, /file/path = (with the = not followed by anything) will be returned instead.
answered 1 hour ago
mosvymosvy
10.8k11340
# getcap ./some_bin
./some_bin =ep
That file has ALL the capabilites set in the effective(e) and permitted(p) set.
In the textual representation of capabilities, a leading = is equivalent to all=.
From the cap_to_text(3) manpage:
In the case that the leading operator is
=, and no list of capabilities is provided, the action-list is assumed to refer to all capabilities. For example, the following three clauses are equivalent to each
other (and indicate a completely empty capability set):all=;=;
cap_chown,<every-other-capability>=.
Such a binary can do whatever it pleases. Notice that this is only a "gotcha" of the textual representation used by libpcap: in the security.capability extended attribute of the file for which getcap will print /file/path =ep, all the meaningful bits are effectively on; for an empty security.capability, /file/path = (with the = not followed by anything) will be returned instead.
answered 1 hour ago
mosvymosvy
10.8k11340
edited 51 mins ago
answered 1 hour ago
mosvymosvy
10.8k11340
answered 1 hour ago
mosvymosvy
10.8k11340
answered 1 hour ago
mosvymosvy
10.8k11340
10.8k11340
add a comment |
add a comment |
The capabilities are put in the permitted set (p), and all permitted capabilities are copied into the effective set (e). There does not seem to be any capabilities in your example (where did you get it from?).
The e is used for legacy programs (possibly most programs at the current time), that is programs that don't know about capabilities, so can not them-selves copy capabilities from permitted to effective.
answered 2 hours ago
ctrl-alt-delorctrl-alt-delor
12.7k52663
add a comment |
The capabilities are put in the permitted set (p), and all permitted capabilities are copied into the effective set (e). There does not seem to be any capabilities in your example (where did you get it from?).
The e is used for legacy programs (possibly most programs at the current time), that is programs that don't know about capabilities, so can not them-selves copy capabilities from permitted to effective.
answered 2 hours ago
ctrl-alt-delorctrl-alt-delor
12.7k52663
add a comment |
The capabilities are put in the permitted set (p), and all permitted capabilities are copied into the effective set (e). There does not seem to be any capabilities in your example (where did you get it from?).
The e is used for legacy programs (possibly most programs at the current time), that is programs that don't know about capabilities, so can not them-selves copy capabilities from permitted to effective.
answered 2 hours ago
ctrl-alt-delorctrl-alt-delor
12.7k52663
The capabilities are put in the permitted set (p), and all permitted capabilities are copied into the effective set (e). There does not seem to be any capabilities in your example (where did you get it from?).
The e is used for legacy programs (possibly most programs at the current time), that is programs that don't know about capabilities, so can not them-selves copy capabilities from permitted to effective.
answered 2 hours ago
ctrl-alt-delorctrl-alt-delor
12.7k52663
answered 2 hours ago
ctrl-alt-delorctrl-alt-delor
12.7k52663
answered 2 hours ago
ctrl-alt-delorctrl-alt-delor
12.7k52663
answered 2 hours ago
ctrl-alt-delorctrl-alt-delor
12.7k52663
12.7k52663
add a comment |
add a comment |
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1
capabilities(7)have nothing to do with selinux. That file has all possible capabilities set.– mosvy
2 hours ago
vulp3cula.gitbook.io/hackers-grimoire/post-exploitation/…
– Jesse_b
2 hours ago