CVE-2019-1731 MEDIUM

CVE-2019-1731: Cisco NX-OS Software SSH Key Information Disclosure Vulnerability

Vendor Cisco
Product Cisco NX-OS Software
Weakness CWE-200 · Info exposure
Published May 15, 2019
Last update November 21, 2024

CVSS base score

5.1/10
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

A vulnerability in the SSH CLI key management functionality of Cisco NX-OS Software could allow an authenticated, local attacker to expose a user's private SSH key to all authenticated users on the targeted device. The attacker must authenticate with valid administrator device credentials. The vulnerability is due to incomplete error handling if a specific error type occurs during the SSH key export. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the CLI. A successful exploit could allow the attacker to expose a user's private SSH key. In addition, a similar type of error in the SSH key import could cause the passphrase-protected private SSH key to be imported unintentionally.

Key dates

02Disclosure timeline

May 15, 2019 CVE published
November 21, 2024 Record updated