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CVE-2019-1892

Cisco Small Business Series Switches Memory Corruption Vulnerability

A vulnerability in the Secure Sockets Layer (SSL) input packet processor of Cisco Small Business 200, 300, and 500 Series Managed Switches could allow an unauthenticated, remote attacker to cause a memory corruption on an affected device. The vulnerability is due to improper validation of HTTPS packets. An attacker could exploit this vulnerability by sending a malformed HTTPS packet to the management web interface of the affected device. A successful exploit could allow the attacker to cause an unexpected reload of the device, resulting in a denial of service (DoS) condition.

CVSS 3.0 · 7.5 High EPSS 1.8% KEV · Not listed
Vendors
Cisco
Products
Esw2-350g52dc Esw2-350g52dc Firmware Esw2-550x48dc and 111 more
CVE-2019-1891

Cisco Small Business Series Switches HTTP Denial of Service Vulnerability

A vulnerability in the web interface of Cisco Small Business 200, 300, and 500 Series Managed Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of requests sent to the web interface. An attacker could exploit this vulnerability by sending a malicious request to the web interface of an affected device. A successful exploit could allow the attacker to cause an unexpected reload of the device, resulting in a DoS condition.

CVSS 3.0 · 7.5 High EPSS 1.8% KEV · Not listed
Vendors
Cisco
Products
Esw2-350g52dc Esw2-350g52dc Firmware Esw2-550x48dc and 111 more
CVE-2019-1859

Cisco Small Business Switches Secure Shell Certificate Authentication Bypass Vulnerability

A vulnerability in the Secure Shell (SSH) authentication process of Cisco Small Business Switches software could allow an attacker to bypass client-side certificate authentication and revert to password authentication. The vulnerability exists because OpenSSH mishandles the authentication process. An attacker could exploit this vulnerability by attempting to connect to the device via SSH. A successful exploit could allow the attacker to access the configuration as an administrative user if the default credentials are not changed. There are no workarounds available; however, if client-side certificate authentication is enabled, disable it and use strong password authentication. Client-side certificate authentication is disabled by default.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Cisco
Products
Sf200-24 Sf200-24 Firmware Sf200-24fp and 225 more
CVE-2019-15993

Cisco Small Business Switches Information Disclosure Vulnerability

A vulnerability in the web UI of Cisco Small Business Switches could allow an unauthenticated, remote attacker to access sensitive device information. The vulnerability exists because the software lacks proper authentication controls to information accessible from the web UI. An attacker could exploit this vulnerability by sending a malicious HTTP request to the web UI of an affected device. A successful exploit could allow the attacker to access sensitive device information, which includes configuration files.

CVSS 3.1 · 5.3 Medium EPSS 10.3% KEV · Not listed
Vendors
Cisco
Products
Sf200-24 Sf200-24 Firmware Sf200-24fp and 225 more