SB2021061622 - Multiple vulnerabilities in Cisco Small Business 220 Series Smart Switches
Published: June 16, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Improper Authentication (CVE-ID: CVE-2021-1542)
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to usage of weak sessionidentifiers. A remote unauthenticated attacker can guess active session identifier, bypass authentication process and gain unauthorized access to the application.
2) Input validation error (CVE-ID: CVE-2021-1541)
The vulnerability allows a remote user to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input for TFTP configuration parameters. A remote user can pass specially crafted input to the application and execute arbitrary code on the system.
3) Cross-site scripting (CVE-ID: CVE-2021-1543)
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) Cross-site scripting (CVE-ID: CVE-2021-1571)
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 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.
Remediation
Install update from vendor's website.