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medium4.4

CVE-2019-1731

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…

Impact

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.

Affected products

VendorProductAffected versions
CiscoNx-Os
before 7.0\(3\)i4\(9\)
from 7.0\(3\)i7 before 7.0\(3\)i7\(4\)
before 6.0\(2\)a8\(10\)
from 7.0\(3\)i4 before 7.0\(3\)i7\(4\)
before 7.3\(4\)n1\(1\)
from 7.0\(3\) before 7.0\(3\)f3\(5\)

Weakness classification

CWE-200CWE-755

References