Ping: only for root (bin aber als root drin...)

Code:

login as: root
root@195.177.*.*'s password:
Last login: Mon Mar  1 21:27:12 2004 from * on pts/2

Most of the programs included with the Debian GNU/Linux system are
freely redistributable; the exact distribution terms for each program
are described in the individual files in /usr/share/doc/*/copyright

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Mon Mar  1 21:27:12 2004 from *
vl11s12:~# ping irc.euirc.net
ping: ping must run as root

wie ist das möglich?

CHfish

 

JA is die /bin/ping ping Datei...

Code:

execve("/bin/ping", ["ping"], [/* 13 vars */]) = 0
uname({sys="Linux", node="vl11s12", ...}) = 0
brk(0)                                  = 0x805c91c
open("/etc/ld.so.preload", O_RDONLY)    = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=9344, ...}) = 0
old_mmap(NULL, 9344, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40014000
close(3)                                = 0
open("/lib/libc.so.6", O_RDONLY)        = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\30\222"..., 1024) = 1024
fstat64(3, {st_mode=S_IFREG|0755, st_size=1153784, ...}) = 0
old_mmap(NULL, 1166560, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40017000
mprotect(0x4012a000, 40160, PROT_NONE)  = 0
old_mmap(0x4012a000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x113000) = 0x4012a000
old_mmap(0x40130000, 15584, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40130000
close(3)                                = 0
munmap(0x40014000, 9344)                = 0
getuid32()                              = 0
brk(0)                                  = 0x805c91c
brk(0x805cd34)                          = 0x805cd34
brk(0x805d000)                          = 0x805d000
open("/etc/nsswitch.conf", O_RDONLY)    = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=456, ...}) = 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40014000
read(3, "# /etc/nsswitch.conf\n#\n# Example"..., 4096) = 456
brk(0x805e000)                          = 0x805e000
read(3, "", 4096)                       = 0
close(3)                                = 0
munmap(0x40014000, 4096)                = 0
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=9344, ...}) = 0
old_mmap(NULL, 9344, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40014000
close(3)                                = 0
open("/lib/libnss_db.so.2", O_RDONLY)   = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\220\22"..., 1024) = 1024
fstat64(3, {st_mode=S_IFREG|0644, st_size=16944, ...}) = 0
old_mmap(NULL, 20336, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40134000
mprotect(0x40138000, 3952, PROT_NONE)   = 0
old_mmap(0x40138000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x3000) = 0x40138000
close(3)                                = 0
open("/lib/libnss_files.so.2", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0@\35\0\000"..., 1024) = 1024
fstat64(3, {st_mode=S_IFREG|0644, st_size=32668, ...}) = 0
old_mmap(NULL, 36112, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40139000
mprotect(0x40141000, 3344, PROT_NONE)   = 0
old_mmap(0x40141000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x7000) = 0x40141000
close(3)                                = 0
open("/usr/lib/libdb3.so.3", O_RDONLY)  = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0p\311\0"..., 1024) = 1024
fstat64(3, {st_mode=S_IFREG|0644, st_size=684092, ...}) = 0
old_mmap(NULL, 687628, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40142000
mprotect(0x401e9000, 3596, PROT_NONE)   = 0
old_mmap(0x401e9000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0xa6000) = 0x401e9000
close(3)                                = 0
munmap(0x40014000, 9344)                = 0
open("/var/lib/misc/protocols.db", O_RDWR|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/var/lib/misc/protocols.db", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/etc/protocols", O_RDONLY)        = 3
fcntl64(3, F_GETFD)                     = 0
fcntl64(3, F_SETFD, FD_CLOEXEC)         = 0
fstat64(3, {st_mode=S_IFREG|0644, st_size=1748, ...}) = 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40014000
read(3, "# /etc/protocols:\n# $Id: protoco"..., 4096) = 1748
close(3)                                = 0
munmap(0x40014000, 4096)                = 0
socket(PF_INET, SOCK_RAW, IPPROTO_ICMP) = -1 EPERM (Operation not permitted)
write(2, "ping: ping must run as root\n", 28ping: ping must run as root
) = 28
_exit(2)                                = ?

hmm

open("/etc/ld.so.preload", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/var/lib/misc/protocols.db", O_RDWR|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/var/lib/misc/protocols.db", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)


CHfish

 

Ah richtig, hatte ich eben gar nicht gesehen, daß du dich schon als root eingeloggt hast. Schön, daß man das ganze noch unterständlicher. Die Rechte stimmen jedenfalls.

Hmm, dann fällt mir auch nichts mehr großartiges ein, außer mit "which ping" zu gucken, ob wirklich das richtige (bei dir wohl /bin/ping) ausgeführt wird. Aber selbst wenn nicht, dann wäre die Fehlermeldung komisch.

Eventuell erfährt man durch strace mehr (strace ping).

 

-r-sr-xr-x 1 root root 15244 Nov 18 2001 ping
(Ordner ping)

aber:

vl11s12:/bin# ping www.pcwelt.de
ping: ping must run as root

mit: root@195.177.*'s password:, natürlich

aber trotzdem danke

CHfish

(vl11s12:/# ls -l $(whereis -b ping)
ls: ping:: No such file or directory
-r-sr-xr-x 1 root root 15244 Nov 18 2001 /bin/ping
vl11s12:/#
)

 

Was sagt ls -l $(whereis -b ping)?
Die Rechte von Ping sollten -r-sr-xr-x oder wenigstens -rwsr-xr-x sein. Wichtig ist das s, damit ping root-Reche bekommt, ohne das ICMP afaik nicht möglich ist.

chmod 4555 /sbin/ping (oder wo auch immer es bei dir liegt) sollte setuid entsprechend setzen.