Denial of service in Cisco Systems, Inc products - CVE-2017-6720
Published: September 21, 2017
Vulnerability identifier: #VU8561
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-6720
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote authenticated attacker to cause DoS condition on the target system.
The weakness exists in the Secure Shell (SSH) subsystem of Cisco Small Business Managed Switches due to improper processing of SSH connections. A remote attacker can log in to an affected switch via SSH and send a malicious SSH message to cause the switch to reload.
Successful exploitation of the vulnerability results in denial of service.
The weakness exists in the Secure Shell (SSH) subsystem of Cisco Small Business Managed Switches due to improper processing of SSH connections. A remote attacker can log in to an affected switch via SSH and send a malicious SSH message to cause the switch to reload.
Successful exploitation of the vulnerability results in denial of service.
Affected software
Cisco 550X Series Stackable Managed Switches
Cisco 350X Series Stackable Managed Switches
Cisco 350 Series Managed Switches
Cisco ESW2 Series Advanced Switches
Cisco Small Business 500 Series Stackable Managed Switches
Cisco Small Business 300 Series Managed Switches
Cisco 350X Series Stackable Managed Switches
Cisco 350 Series Managed Switches
Cisco ESW2 Series Advanced Switches
Cisco Small Business 500 Series Stackable Managed Switches
Cisco Small Business 300 Series Managed Switches
How to mitigate CVE-2017-6720
Update Cisco Small Business 300 Series Managed Switches, Cisco Small Business 500 Series Stackable Managed Switches and Cisco ESW2 Series Advanced Switches to version 1.4.8.06.
Update Cisco 350 Series Managed Switches, Cisco 350X Series Stackable Managed Switches and Cisco 550X Series Stackable Managed Switches to version 2.3.0.130.
Update Cisco 350 Series Managed Switches, Cisco 350X Series Stackable Managed Switches and Cisco 550X Series Stackable Managed Switches to version 2.3.0.130.