Vulnerability in Cisco Nx-Os Software
CVE-2019-1728
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.
EPSS: 0.002 (15.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
- psirt@cisco.com (vdb-entry, x_refsource_BID)
Frequently asked questions
- What is CVE-2019-1728?
- CVE-2019-1728 is a medium-severity vulnerability in Cisco Nx-Os Software, classified under Improper Verification of Cryptographic Signature. CVSS score: 6.7/10. Published 2019-05-15.
- How severe is CVE-2019-1728?
- Medium severity. CVSS v3 base score is 6.7 out of 10.