CVE-2019-1728

Medium

Description

A vulnerability in the Secure Configuration Validation functionality of Cisco FXOS Software and Cisco NX-OS Software could allow an authenticated, local attacker to run arbitrary commands at system boot time with the privileges of root. The vulnerability is due to a lack of proper validation of system files when the persistent configuration information is read from the file system. An attacker could exploit this vulnerability by authenticating to the device and overwriting the persistent configuration storage with malicious executable files. An exploit could allow the attacker to run arbitrary commands at system startup and those commands will run as the root user. The attacker must have valid administrative credentials for the device.

SeverityMedium
CVSS6.7
Exploit probability—
ProductCisco Nx-os
PublishedMay 15, 2019
First seenMay 15, 2019
Weakness typeCWE-347CWE-347

How to fix

Update
  • cisco nx-os8.1\(1b\), 8.3\(1\), 7.0\(3\)i7\(3\), 6.0\(2\)a8\(11\), 7.3\(4\)n1\(1\), 6.2\(22\), 7.3\(3\)d1\(1\), 4.0\(1a\), 2.4.1.101 or later

Affected products

ProductAffected versionsFixed in
cisco nx-os8.1 ≤ v < 8.1\(1b\), 8.2 ≤ v < 8.3\(1\), 7.0\(3\)i7 ≤ v < 7.0\(3\)i7\(3\), 6.0\(2\)a8 ≤ v < 6.0\(2\)a8\(11\), 7.0\(3\) ≤ v < 7.0\(3\)i7\(3\), 7.3 ≤ v < 7.3\(4\)n1\(1\), 6.2 ≤ v < 6.2\(22\), 7.2 ≤ v < 7.3\(3\)d1\(1\), 8.0 ≤ v < 8.3\(1\), 4.0 ≤ v < 4.0\(1a\), 2.4 ≤ v < 2.4.1.1018.1\(1b\), 8.3\(1\), 7.0\(3\)i7\(3\), 6.0\(2\)a8\(11\), 7.3\(4\)n1\(1\), 6.2\(22\), 7.3\(3\)d1\(1\), 4.0\(1a\), 2.4.1.101

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