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. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2019-1859US | high7.2 | — | ||
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… | ||||
references
External citations — patches, advisories, analysis.
- Cisco Small Business Switches Secure Shell Certificate Authentication Bypass Vulnerabilityself
- Cisco Security Vulnerability Policyexternal
- Software Centerexternal
- https://www.cisco.com/c/en/us/products/end-user-license-agreement.htmlexternal
- https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.htmlexternal
- Cisco Security Advisories and Alerts pageexternal
remediations (7)
- FixedCisco Small Business 200 Series Smart Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Small Business 250 Series Smart Switches Software
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Small Business 300 Series Managed Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Small Business 350 Series Managed Switches Software
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Small Business 350X Series Managed Switches Software
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Small Business 500 Series Stackable Managed Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Small Business 550X Series Stackable Managed Switches Software
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
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