Description of problem:
check_ntp_peer terminates with buffer overflow detected


Version-Release number of selected component (if applicable):
1.4.11-2.el5

How reproducible:
Always, happens on different systems with different architectures

Steps to Reproduce:
1. call check_ntp_peers
2.
3.
  
Actual results:
[root@uninvweb auth]# /usr/lib/nagios/plugins/check_ntp_peer -H
time1.rrz.uni-koeln.de -w 120 -c 200 
*** buffer overflow detected ***: /usr/lib/nagios/plugins/check_ntp_peer terminated
======= Backtrace: =========
/lib/libc.so.6(__chk_fail+0x41)[0x79fe41]
/lib/libc.so.6(__read_chk+0x50)[0x7a02d0]
/usr/lib/nagios/plugins/check_ntp_peer[0x8049da3]
/usr/lib/nagios/plugins/check_ntp_peer[0x804a80e]
/lib/libc.so.6(__libc_start_main+0xdc)[0x6d0dec]
/usr/lib/nagios/plugins/check_ntp_peer[0x8048d11]
======= Memory map: ========
0044e000-00452000 r-xp 00000000 08:01 160041     /lib/libnss_dns-2.5.so
00452000-00453000 r-xp 00003000 08:01 160041     /lib/libnss_dns-2.5.so
00453000-00454000 rwxp 00004000 08:01 160041     /lib/libnss_dns-2.5.so
00560000-0056b000 r-xp 00000000 08:01 800018     /lib/libgcc_s-4.1.2-20080102.so.1
0056b000-0056c000 rwxp 0000a000 08:01 800018     /lib/libgcc_s-4.1.2-20080102.so.1
0069d000-006b7000 r-xp 00000000 08:01 160750     /lib/ld-2.5.so
006b7000-006b8000 r-xp 00019000 08:01 160750     /lib/ld-2.5.so
006b8000-006b9000 rwxp 0001a000 08:01 160750     /lib/ld-2.5.so
006bb000-007f8000 r-xp 00000000 08:01 160752     /lib/libc-2.5.so
007f8000-007fa000 r-xp 0013d000 08:01 160752     /lib/libc-2.5.so
007fa000-007fb000 rwxp 0013f000 08:01 160752     /lib/libc-2.5.so
007fb000-007fe000 rwxp 007fb000 00:00 0 
00800000-00825000 r-xp 00000000 08:01 800017     /lib/libm-2.5.so
00825000-00826000 r-xp 00024000 08:01 800017     /lib/libm-2.5.so
00826000-00827000 rwxp 00025000 08:01 800017     /lib/libm-2.5.so
0085d000-00866000 r-xp 00000000 08:01 160075     /lib/libnss_files-2.5.so
00866000-00867000 r-xp 00008000 08:01 160075     /lib/libnss_files-2.5.so
00867000-00868000 rwxp 00009000 08:01 160075     /lib/libnss_files-2.5.so
008ca000-008dd000 r-xp 00000000 08:01 160760     /lib/libnsl-2.5.so
008dd000-008de000 r-xp 00012000 08:01 160760     /lib/libnsl-2.5.so
008de000-008df000 rwxp 00013000 08:01 160760     /lib/libnsl-2.5.so
008df000-008e1000 rwxp 008df000 00:00 0 
008e3000-008f2000 r-xp 00000000 08:01 800008     /lib/libresolv-2.5.so
008f2000-008f3000 r-xp 0000e000 08:01 800008     /lib/libresolv-2.5.so
008f3000-008f4000 rwxp 0000f000 08:01 800008     /lib/libresolv-2.5.so
008f4000-008f6000 rwxp 008f4000 00:00 0 
00ed5000-00ed6000 r-xp 00ed5000 00:00 0          [vdso]
08048000-0804f000 r-xp 00000000 08:01 1250423   
/usr/lib/nagios/plugins/check_ntp_peer
0804f000-08051000 rw-p 00006000 08:01 1250423   
/usr/lib/nagios/plugins/check_ntp_peer
09486000-094a7000 rw-p 09486000 00:00 0 
b7dbf000-b7fbf000 r--p 00000000 08:01 1173651    /usr/lib/locale/locale-archive
b7fbf000-b7fc1000 rw-p b7fbf000 00:00 0 
bff9a000-bffaf000 rw-p bff9a000 00:00 0          [stack]
Abgebrochen


Expected results:


Additional info:
Happens for i386 and x86_64