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Bug#1755: ping -l (preload) works for non-superusers

Package: netbase
Version: 1.91-1

See the transcript below.  The `-f' (flood ping) option is disabled
for non-root users, but IMO the -l option should be restricted or
disabled too.

Ian.

chiark:~> id
uid=1001(ijackson) gid=1001(ijackson) groups=1001(ijackson),202(doom),203(killer)
chiark:~> ping -l2000 -i3 XXXXX [hostname deleted to spare the innocent]
PING XXXXX.chu.cam.ac.uk (131.111.131.XXXXX): 56 data bytes
64 bytes from 131.111.131.XXXXX: icmp_seq=0 ttl=255 time=1692.6 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=1 ttl=255 time=1696.9 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=2 ttl=255 time=1699.2 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=3 ttl=255 time=1700.4 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=4 ttl=255 time=1700.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=5 ttl=255 time=1703.1 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=6 ttl=255 time=1703.2 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=7 ttl=255 time=1704.3 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=8 ttl=255 time=1704.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=9 ttl=255 time=1705.6 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=10 ttl=255 time=1705.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=11 ttl=255 time=1706.9 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=12 ttl=255 time=1707.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=13 ttl=255 time=1708.1 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=14 ttl=255 time=1708.3 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=15 ttl=255 time=1715.2 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=16 ttl=255 time=1715.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=17 ttl=255 time=1716.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=18 ttl=255 time=1716.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=19 ttl=255 time=1717.9 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=20 ttl=255 time=1715.6 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=21 ttl=255 time=1716.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=22 ttl=255 time=1716.9 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=23 ttl=255 time=1718.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=24 ttl=255 time=1719.1 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=25 ttl=255 time=1720.2 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=26 ttl=255 time=1722.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=27 ttl=255 time=1735.1 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=28 ttl=255 time=1735.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=29 ttl=255 time=1736.6 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=30 ttl=255 time=1736.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=31 ttl=255 time=1737.9 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=32 ttl=255 time=1738.1 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=33 ttl=255 time=1739.2 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=34 ttl=255 time=1739.4 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=35 ttl=255 time=1740.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=36 ttl=255 time=1740.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=37 ttl=255 time=1741.9 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=38 ttl=255 time=1742.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=39 ttl=255 time=1743.1 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=40 ttl=255 time=1743.3 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=41 ttl=255 time=1744.4 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=42 ttl=255 time=1744.6 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=43 ttl=255 time=1756.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=44 ttl=255 time=1757.9 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=45 ttl=255 time=1765.6 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=46 ttl=255 time=1765.6 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=47 ttl=255 time=1766.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=48 ttl=255 time=1768.3 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=49 ttl=255 time=1769.4 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=50 ttl=255 time=1769.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=51 ttl=255 time=1770.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=52 ttl=255 time=1770.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=53 ttl=255 time=1772.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=54 ttl=255 time=1772.2 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=55 ttl=255 time=1773.3 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=56 ttl=255 time=1773.4 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=57 ttl=255 time=1774.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=58 ttl=255 time=1774.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=59 ttl=255 time=1775.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=60 ttl=255 time=1776.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=61 ttl=255 time=1777.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=62 ttl=255 time=1778.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=63 ttl=255 time=1779.1 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=64 ttl=255 time=1779.3 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=65 ttl=255 time=1780.4 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=66 ttl=255 time=1781.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=67 ttl=255 time=1781.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=68 ttl=255 time=1781.9 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=69 ttl=255 time=1783.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=70 ttl=255 time=1783.1 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=71 ttl=255 time=1784.2 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=72 ttl=255 time=1784.4 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=73 ttl=255 time=1800.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=74 ttl=255 time=1806.4 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=75 ttl=255 time=1807.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=76 ttl=255 time=1807.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=77 ttl=255 time=1808.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=78 ttl=255 time=1809.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=79 ttl=255 time=1810.1 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=80 ttl=255 time=1810.3 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=81 ttl=255 time=1811.4 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=82 ttl=255 time=1811.6 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=83 ttl=255 time=1812.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=84 ttl=255 time=1812.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=85 ttl=255 time=1814.1 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=86 ttl=255 time=1815.4 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=87 ttl=255 time=1836.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=88 ttl=255 time=1837.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=89 ttl=255 time=1838.9 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=90 ttl=255 time=1841.6 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=91 ttl=255 time=1840.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=92 ttl=255 time=1840.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=93 ttl=255 time=1848.9 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=94 ttl=255 time=1849.2 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=95 ttl=255 time=1850.3 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=96 ttl=255 time=1850.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=97 ttl=255 time=1851.6 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=98 ttl=255 time=1851.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=99 ttl=255 time=1852.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=100 ttl=255 time=1854.4 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=101 ttl=255 time=1855.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=102 ttl=255 time=1856.1 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=103 ttl=255 time=1857.2 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=104 ttl=255 time=1858.1 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=105 ttl=255 time=1858.2 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=106 ttl=255 time=1858.4 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=107 ttl=255 time=1859.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=108 ttl=255 time=1859.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=109 ttl=255 time=1860.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=110 ttl=255 time=1861.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=111 ttl=255 time=1862.1 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=112 ttl=255 time=1862.3 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=113 ttl=255 time=1863.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=114 ttl=255 time=1863.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=115 ttl=255 time=1864.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=116 ttl=255 time=1865.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=117 ttl=255 time=1866.1 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=118 ttl=255 time=1866.3 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=119 ttl=255 time=1867.4 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=120 ttl=255 time=1867.6 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=121 ttl=255 time=1868.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=122 ttl=255 time=1869.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=123 ttl=255 time=1870.1 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=124 ttl=255 time=1870.3 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=125 ttl=255 time=1871.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=126 ttl=255 time=1871.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=127 ttl=255 time=1872.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=128 ttl=255 time=1873.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=129 ttl=255 time=1874.2 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=130 ttl=255 time=1874.4 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=131 ttl=255 time=1875.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=132 ttl=255 time=1875.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=133 ttl=255 time=1876.9 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=134 ttl=255 time=1877.1 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=135 ttl=255 time=1879.6 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=136 ttl=255 time=1879.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=137 ttl=255 time=1881.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=138 ttl=255 time=1881.2 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=139 ttl=255 time=1882.3 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=140 ttl=255 time=1882.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=141 ttl=255 time=1883.6 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=142 ttl=255 time=1883.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=143 ttl=255 time=1885.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=144 ttl=255 time=1885.2 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=145 ttl=255 time=1886.3 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=146 ttl=255 time=1886.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=147 ttl=255 time=1887.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=148 ttl=255 time=1887.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=149 ttl=255 time=1889.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=150 ttl=255 time=1889.1 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=151 ttl=255 time=1890.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=152 ttl=255 time=1891.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=153 ttl=255 time=1892.2 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=154 ttl=255 time=1892.4 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=155 ttl=255 time=1900.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=156 ttl=255 time=1913.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=157 ttl=255 time=1915.3 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=158 ttl=255 time=1939.3 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=159 ttl=255 time=1941.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=160 ttl=255 time=1989.4 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=161 ttl=255 time=1990.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=162 ttl=255 time=1989.2 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=163 ttl=255 time=1990.3 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=164 ttl=255 time=1990.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=165 ttl=255 time=1991.6 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=166 ttl=255 time=1991.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=167 ttl=255 time=1992.8 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=168 ttl=255 time=1993.0 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=169 ttl=255 time=1994.2 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=170 ttl=255 time=1994.4 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=171 ttl=255 time=1995.5 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=172 ttl=255 time=1995.6 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=173 ttl=255 time=1996.7 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=174 ttl=255 time=1996.9 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=175 ttl=255 time=1998.1 ms
64 bytes from 131.111.131.XXXXX: icmp_seq=2000 ttl=255 time=462.5 ms

--- XXXXX.chu.cam.ac.uk ping statistics ---
2001 packets transmitted, 177 packets received, 91% packet loss
round-trip min/avg/max = 462.5/1816.6/1998.1 ms
chiark:~>
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