SB2017092107 - Denial of service in Cisco Small Business Managed Switches
Published: September 21, 2017
Security Bulletin ID
SB2017092107
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Denial of service (CVE-ID: CVE-2017-6720)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 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/E:U/U:Clear
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.
Remediation
Install update from vendor's website.