1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
# Start syslogd in foreground mode.
# The client writes a message to Sys::Syslog native method.
# The syslogd writes it into a file and through a pipe.
# The syslogd passes it via UDP to the loghost.
# The server receives the message on its UDP socket.
# Find the message in client, file, syslogd, server log.
# Check fstat for the parent and child process.
# Check ktrace for setting the correct uid and gid.
# Check that stdio is dupped to /dev/null.
use strict;
use warnings;
our %args = (
syslogd => {
foreground => 1,
loggrep => {
qr/ -F / => 1,
qr/ -d / => 0,
},
fstat => {
qr/^root .* wd / => 1,
qr/^root .* root / => 0,
qr/^root .* [012] .* null$/ => 3,
qr/^root .* kqueue / => 0,
qr/^root .* internet/ => 0,
qr/^_syslogd .* wd / => 1,
qr/^_syslogd .* root / => 1,
qr/^_syslogd .* [012] .* null$/ => 3,
qr/^_syslogd .* kqueue / => 1,
qr/^_syslogd .* internet/ => 2,
},
ktrace => {
qr/CALL setresuid(.*"_syslogd".*){3}/ => 2,
qr/CALL setresgid(.*"_syslogd".*){3}/ => 2,
qr/CALL setsid/ => 0,
},
},
pipe => {
nocheck => 1,
},
);
1;
|