CVE-2019-1728

CVSS V2 High 7.2 CVSS V3 Medium 6.7

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.

Overview

CVE ID
CVE-2019-1728

Assigner
ykramarz@cisco.com

Vulnerability Status
Modified

Published Version
2019-05-15T17:29:01

Last Modified Date
2019-05-21T13:29:00

Weakness Enumerations

CWE	URL
CWE-347	http://cwe.mitre.org/data/definitions/347.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
		AND
cpe:2.3:o:cisco:nx-os::::::::	1	OR	8.1	8.1\(1b\)
cpe:2.3:o:cisco:nx-os::::::::	1	OR	8.2	8.3\(1\)
cpe:2.3:h:cisco:mds_9000:-:::::::*	0	OR
cpe:2.3:h:cisco:mds_9100:-:::::::*	0	OR
cpe:2.3:h:cisco:mds_9200:-:::::::*	0	OR
cpe:2.3:h:cisco:mds_9500:-:::::::*	0	OR
cpe:2.3:h:cisco:mds_9700:-:::::::*	0	OR
		AND
cpe:2.3:o:cisco:nx-os::::::::	1	OR	7.0\(3\)i7	7.0\(3\)i7\(3\)
cpe:2.3:h:cisco:nexus_3000:-:::::::*	0	OR
cpe:2.3:h:cisco:nexus_3100:-:::::::*	0	OR
cpe:2.3:h:cisco:nexus_3100-z:-:::::::*	0	OR
cpe:2.3:h:cisco:nexus_3100v:-:::::::*	0	OR
cpe:2.3:h:cisco:nexus_3200:-:::::::*	0	OR
cpe:2.3:h:cisco:nexus_3400:-:::::::*	0	OR
cpe:2.3:h:cisco:nexus_3500:-:::::::*	0	OR
cpe:2.3:h:cisco:nexus_3600:-:::::::*	0	OR
cpe:2.3:h:cisco:nexus_9000:-:::::::*	0	OR
cpe:2.3:h:cisco:nexus_9200:-:::::::*	0	OR
cpe:2.3:h:cisco:nexus_9300:-:::::::*	0	OR
cpe:2.3:h:cisco:nexus_9500:-:::::::*	0	OR
		AND
cpe:2.3:o:cisco:nx-os::::::::	1	OR	6.0\(2\)a8	6.0\(2\)a8\(11\)
cpe:2.3:o:cisco:nx-os::::::::	1	OR	7.0\(3\)	7.0\(3\)i7\(3\)
cpe:2.3:h:cisco:nexus_3524-x:-:::::::*	0	OR
cpe:2.3:h:cisco:nexus_3524-xl:-:::::::*	0	OR
cpe:2.3:h:cisco:nexus_3548-x:-:::::::*	0	OR
cpe:2.3:h:cisco:nexus_3548-xl:-:::::::*	0	OR
		AND
cpe:2.3:o:cisco:nx-os::::::::	1	OR	7.3	7.3\(4\)n1\(1\)
cpe:2.3:h:cisco:nexus_5500:-:::::::*	0	OR
cpe:2.3:h:cisco:nexus_5600:-:::::::*	0	OR
cpe:2.3:h:cisco:nexus_6000:-:::::::*	0	OR
		AND
cpe:2.3:o:cisco:nx-os::::::::	1	OR	6.2	6.2\(22\)
cpe:2.3:o:cisco:nx-os::::::::	1	OR	7.2	7.3\(3\)d1\(1\)
cpe:2.3:o:cisco:nx-os::::::::	1	OR	8.0	8.3\(1\)
cpe:2.3:h:cisco:nexus_7000:-:::::::*	0	OR
cpe:2.3:h:cisco:nexus_7700:-:::::::*	0	OR
		AND
cpe:2.3:o:cisco:nx-os::::::::	1	OR	4.0	4.0\(1a\)
cpe:2.3:h:cisco:ucs_6248up:-:::::::*	0	OR
cpe:2.3:h:cisco:ucs_6296up:-:::::::*	0	OR
cpe:2.3:h:cisco:ucs_6332:-:::::::*	0	OR
cpe:2.3:h:cisco:usc_6324:-:::::::*	0	OR
cpe:2.3:h:cisco:usc_6332-16up:-:::::::*	0	OR
		AND
cpe:2.3:o:cisco:nx-os::::::::	1	OR	2.4	2.4.1.101
cpe:2.3:h:cisco:firepower_4110:-:::::::*	0	OR
cpe:2.3:h:cisco:firepower_4115:-:::::::*	0	OR
cpe:2.3:h:cisco:firepower_4120:-:::::::*	0	OR
cpe:2.3:h:cisco:firepower_4125:-:::::::*	0	OR
cpe:2.3:h:cisco:firepower_4140:-:::::::*	0	OR
cpe:2.3:h:cisco:firepower_4145:-:::::::*	0	OR
cpe:2.3:h:cisco:firepower_4150:-:::::::*	0	OR
cpe:2.3:h:cisco:firepower_9300:-:::::::*	0	OR

CVSS Version 2

Version
2.0

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

Access Vector
LOCAL

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
COMPLETE

Integrity Impact
COMPLETE

Availability Impact
COMPLETE

Base Score
7.2

Severity
HIGH

Exploitability Score
3.9

Impact Score
10

CVSS Version 3

Version
3.0

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

Attack Vector
LOCAL

Attack Compatibility
LOW

Privileges Required
HIGH

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
6.7

Base Severity
MEDIUM

Exploitability Score
0.8

Impact Score
5.9

References

Reference URL	Reference Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-conf-bypass	Vendor Advisory
http://www.securityfocus.com/bid/108391

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2019-1728
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-1728

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 07:51:57				Added to TrackCVE
2022-12-03 20:41:46	psirt@cisco.com	ykramarz@cisco.com	CVE Assigner	updated
2022-12-03 20:41:46	2019-05-15T17:29Z	2019-05-15T17:29:01	CVE Published Date	updated
2022-12-03 20:41:46		2019-05-21T13:29:00	CVE Modified Date	updated
2022-12-03 20:41:46		Modified	Vulnerability Status	updated