SB2019051137 - Multiple vulnerabilities in Nortek Linear eMerge E3-Series routers
Published: May 11, 2019 Updated: March 26, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 14 secuirty vulnerabilities.
1) Use of default credentials (CVE-ID: CVE-2019-7252)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to device allows usage of default credentials after its deployment. A remote attacker can gain unauthorized access to the device in its default configuration.
2) Path traversal (CVE-ID: CVE-2019-7253)
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.
3) Cross-site scripting (CVE-ID: CVE-2019-7255)
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
4) OS Command Injection (CVE-ID: CVE-2019-7256)
The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation. A remote unauthenticated attacker can pass specially crafted data to the application and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
5) Arbitrary file upload (CVE-ID: CVE-2019-7257)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to insufficient validation of file during file upload. A remote non-authenticated attacker can upload a malicious file and execute it on the device.
6) PHP file inclusion (CVE-ID: CVE-2019-7254)
The vulnerability allows a remote attacker to include and execute arbitrary PHP files on the server.
The vulnerability exists due to incorrect input validation when including PHP files. A remote non-authenticated attacker can send a specially crafted HTTP request to the affected application, include and execute arbitrary PHP code on the system with privileges of the web server.
7) Cross-site request forgery (CVE-ID: CVE-2019-7262)
The vulnerability allows a remote attacker to perform cross-site request forgery attacks.
The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.
8) Stack-based buffer overflow (CVE-ID: CVE-2019-7264)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when handling HTTP requests in several CGI binaries. A remote unauthenticated attacker can send a specially crafted HTTP request, trigger a stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
9) Use of hard-coded credentials (CVE-ID: CVE-2019-7261)
The vulnerability allows a remote attacker to gain full access to vulnerable system.
The vulnerability exists due to presence of hard-coded credentials in application code. A remote unauthenticated attacker can access the affected system using the hard-coded credentials.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
10) Unprotected storage of credentials (CVE-ID: CVE-2019-7260)
The vulnerability allows a local user to gain access to other users' credentials.
The vulnerability exists due to application stored credentials in plain text in a configuration file on the system. A local user can view contents of the configuration file and gain access to passwords for 3rd party integration.
11) Use of hard-coded credentials (CVE-ID: CVE-2019-7265)
The vulnerability allows a remote attacker to gain full access to vulnerable system.
The vulnerability exists due to presence of hard-coded credentials for the root account in application code. A remote unauthenticated attacker can access the affected system using the hard-coded credentials.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
12) Insufficient Control Flow Management (CVE-ID: CVE-2019-7263)
The vulnerability allows a remote attacker to compromise the affected device.
The vulnerability exists due to insufficient control of firmware versions that are allowed to be installed on the device. A remote attacker can downgrade the firmware version to an old and vulnerable release and potentially compromise via known vulnerabilities.
13) Improper access control (CVE-ID: CVE-2019-7259)
The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions. A remote authenticated user can send a specially crafted HTTP GET request and obtain administrator's credentials in clear text.
14) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-7258)
The vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions when updating user data. A remote user can send a specially crafted HTTP POST request and assign an administrative role to their account.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.
References
- https://www.applied-risk.com/resources/ar-2019-005
- http://packetstormsecurity.com/files/155253/Linear-eMerge-E3-1.00-06-Cross-Site-Scripting.html
- http://packetstormsecurity.com/files/155255/Linear-eMerge-E3-1.00-06-card_scan.php-Command-Injection.html
- http://packetstormsecurity.com/files/155256/Linear-eMerge-E3-1.00-06-card_scan_decoder.php-Command-Injection.html
- http://packetstormsecurity.com/files/155272/Linear-eMerge-E3-Access-Controller-Command-Injection.html
- http://packetstormsecurity.com/files/170372/Linear-eMerge-E3-Series-Access-Controller-Command-Injection.html
- http://www.checkpoint.com/defense/advisories/public/2020/cpai-2019-1666.html
- http://packetstormsecurity.com/files/155254/Linear-eMerge-E3-1.00-06-Arbitrary-File-Upload-Remote-Root-Code-Execution.html
- http://packetstormsecurity.com/files/155252/Linear-eMerge-E3-1.00-06-Directory-Traversal.html
- http://packetstormsecurity.com/files/155263/Nortek-Linear-eMerge-E3-Access-Control-Cross-Site-Request-Forgery.html
- http://packetstormsecurity.com/files/155267/Nortek-Linear-eMerge-E3-Access-Controller-1.00-06-SSH-FTP-Remote-Root.html
- http://packetstormsecurity.com/files/155260/Linear-eMerge-E3-1.00-06-Privilege-Escalation.html