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CVE-2019-1859

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CVE-2019-1859

Published: May 3, 2019

Modified: Nov 20, 2024

PUBLISHED

CVSS v3.0

7.2

HIGH

Description

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.

VendorProductVersions

Cisco

Cisco Small Business 200 Series Smart Switches

affected
unspecified - < 1.4.10.6
affected
unspecified - < 2.5.0.78

Weaknesses (CWE)

CWE-285

CVSS v3.0 Details

CVSS v3.0 Vector

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

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