SB2021010401 - Multiple vulnerabilities in MK-AUTH
Published: January 4, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 6 secuirty vulnerabilities.
1) Authorization bypass through user-controlled key (CVE-ID: CVE-2021-3005)
The vulnerability allows a remote attacker to obtain sensitive information.
The vulnerability exists due to incorrect implementation of access restrictions in central/recibo.php. A remote attacker can obtain sensitive information (e.g., a CPF number) via a modified titulo (aka invoice number).
2) SQL injection (CVE-ID: CVE-2020-14068)
The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.
The vulnerability exists due to insufficient sanitization of user-supplied data in central/executar_login.php. A remote attacker can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.
Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.
3) SQL injection (CVE-ID: CVE-2020-14069)
The vulnerability allows a remote user to execute arbitrary SQL queries in database.
The vulnerability exists due to insufficient sanitization of user-supplied data in arp.php, dhcp.php, hotspot.php, ip.php, pgaviso.php, pgcorte.php, pppoe.php, queues.php, and wifi.php scripts. A remote user can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.
Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.
4) Credentials management (CVE-ID: CVE-2020-14070)
The vulnerability allows a remote attacker to guess administrative credentials.
The vulnerability exists due to guessable credentials to admin/executar_login.php. A remote attacker can guess administrative password and gain unauthorized access to the application.
5) Cross-site scripting (CVE-ID: CVE-2020-14071)
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.
6) OS Command Injection (CVE-ID: CVE-2020-14072)
The vulnerability allows a remote user to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation within the /auth admin scripts. A remote administrator can pass specially crafted data to the application and execute arbitrary OS commands on the target system with root privileges.
Remediation
Install update from vendor's website.