PT-2019-2447 · Cisco · Cisco Nx-Os+2

Published 2019-05-15 · Updated 2019-05-21 · CVE-2019-1728

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Cisco FXOS Software and Cisco NX-OS Software (affected versions not specified)

Description A vulnerability in the Secure Configuration Validation functionality 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.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Verification of Cryptographic Signature

Weakness Enumeration

CWE-347

Related Identifiers

BDU:2019-02225

CVE-2019-1728

Affected Products

Cisco Fxos

Cisco Nx-Os

Cisco Nexus

References · 5

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-conf-bypass · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-1728 · Security Note
• https://osv.dev/vulnerability/CVE-2019-1728 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-02225 · Security Note
• http://securityfocus.com/bid/108391 · Note