NVD - CVE-2019-1594

CVE-2019-1594 Detail

Current Description

A vulnerability in the 802.1X implementation for Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to incomplete input validation of Extensible Authentication Protocol over LAN (EAPOL) frames. An attacker could exploit this vulnerability by sending a crafted EAPOL frame to an interface on the targeted device. A successful exploit could allow the attacker to cause the Layer 2 (L2) forwarding process to restart multiple times, leading to a system-level restart of the device and a DoS condition. Note: This vulnerability affects only NX-OS devices configured with 802.1X functionality. Cisco Nexus 1000V Switch for VMware vSphere devices are affected in versions prior to 5.2(1)SV3(1.4b). Nexus 3000 Series Switches are affected in versions prior to 7.0(3)I7(4). Nexus 3500 Platform Switches are affected in versions prior to 7.0(3)I7(4). Nexus 2000, 5500, 5600, and 6000 Series Switches are affected in versions prior to 7.3(5)N1(1) and 7.1(5)N1(1b). Nexus 7000 and 7700 Series Switches are affected in versions prior to 8.2(3). Nexus 9000 Series Fabric Switches in ACI Mode are affected in versions prior to 13.2(1l). Nexus 9000 Series Switches in Standalone NX-OS Mode are affected in versions prior to 7.0(3)I7(4).

Source: MITRE
Description Last Modified: 03/06/2019
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.4 HIGH
Vector: AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H (V3 legend)
Impact Score: 4.0
Exploitability Score: 2.8

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 6.1 MEDIUM
Vector: (AV:A/AC:L/Au:N/C:N/I:N/A:C) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 6.5

Access Vector (AV): Local_Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink	Resource
http://www.securityfocus.com/bid/107325	Third Party Advisory VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nx-os-lan-auth	Patch Vendor Advisory

Technical Details

Vulnerability Type (View All)

Input Validation (CWE-20)

Vulnerable software and versions Switch to CPE 2.2

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

3 change records found - show changes

Modified Analysis - 3/15/2019 11:46:12 AM

Action	Type	Old Value	New Value
Added	CPE Configuration		AND OR cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 6.2 up to (excluding) 6.2\(20a\) OR cpe:2.3:h:cisco:nexus_7000:-:::::::* cpe:2.3:h:cisco:nexus_7700:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 7.2 up to (excluding) 7.3\(3\)d1\(1\) OR cpe:2.3:h:cisco:nexus_7000:-:::::::* cpe:2.3:h:cisco:nexus_7700:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 8.0 up to (excluding) 8.2\(3\) OR cpe:2.3:h:cisco:nexus_7000:-:::::::* cpe:2.3:h:cisco:nexus_7700:-:::::::*
Changed	CPE Configuration	AND OR cpe:2.3:o:cisco:nx-os::::::::* versions up to (excluding) 7.0\(3\)i7\(4\) OR cpe:2.3:h:cisco:nexus_3000:-:::::::* cpe:2.3:h:cisco:nexus_3500:-:::::::*	AND OR cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 7.0\(3\)i7 up to (excluding) 7.0\(3\)i7\(4\) OR cpe:2.3:h:cisco:nexus_3000:-:::::::* cpe:2.3:h:cisco:nexus_3500:-:::::::*
Changed	CPE Configuration	AND OR cpe:2.3:o:cisco:nx-os::::::::* versions up to (excluding) 7.0\(3\)i7\(4\) OR cpe:2.3:h:cisco:nexus_9000_in_standalone_nx-os_mode:-:::::::*	AND OR cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 7.0\(3\)i7 up to (excluding) 7.0\(3\)i7\(4\) OR cpe:2.3:h:cisco:nexus_9000_in_standalone_nx-os_mode:-:::::::*
Changed	CPE Configuration	AND OR cpe:2.3:o:cisco:nx-os::::::::* versions up to (excluding) 8.2\(3\) OR cpe:2.3:h:cisco:nexus_7000:-:::::::* cpe:2.3:h:cisco:nexus_7700:-:::::::*	AND OR cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 8.3 up to (excluding) 8.3\(1\) OR cpe:2.3:h:cisco:nexus_7000:-:::::::* cpe:2.3:h:cisco:nexus_7700:-:::::::*
Changed	Reference Type	http://www.securityfocus.com/bid/107325 No Types Assigned	http://www.securityfocus.com/bid/107325 Third Party Advisory, VDB Entry

Initial Analysis - 3/7/2019 2:57:28 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		AND OR cpe:2.3:o:cisco:nx-os::::::::* versions from (including) 7.2 up to (excluding) 7.3\(5)n1\(1\) OR cpe:2.3:h:cisco:nexus_2000:-:::::::* cpe:2.3:h:cisco:nexus_5500:-:::::::* cpe:2.3:h:cisco:nexus_5600:-:::::::* cpe:2.3:h:cisco:nexus_6000:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:cisco:nx-os::::::::* versions up to (excluding) 13.2\(1l\) OR cpe:2.3:h:cisco:nexus_9000:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:cisco:nx-os::::::::* versions up to (excluding) 5.2(1)sv3(1.4b) OR cpe:2.3:h:cisco:nexus_1000v:-:::::vmware_vsphere::
Added	CPE Configuration		AND OR cpe:2.3:o:cisco:nx-os::::::::* versions up to (excluding) 7.0\(3\)i7\(4\) OR cpe:2.3:h:cisco:nexus_3000:-:::::::* cpe:2.3:h:cisco:nexus_3500:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:cisco:nx-os::::::::* versions up to (excluding) 7.0\(3\)i7\(4\) OR cpe:2.3:h:cisco:nexus_9000_in_standalone_nx-os_mode:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:cisco:nx-os::::::::* versions up to (excluding) 7.1\(5\)n1\(1b\) OR cpe:2.3:h:cisco:nexus_2000:-:::::::* cpe:2.3:h:cisco:nexus_5500:-:::::::* cpe:2.3:h:cisco:nexus_5600:-:::::::* cpe:2.3:h:cisco:nexus_6000:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:cisco:nx-os::::::::* versions up to (excluding) 8.2\(3\) OR cpe:2.3:h:cisco:nexus_7000:-:::::::* cpe:2.3:h:cisco:nexus_7700:-:::::::*
Added	CVSS V2		(AV:A/AC:L/Au:N/C:N/I:N/A:C)
Added	CVSS V3		AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Added	CWE		CWE-20
Changed	Reference Type	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nx-os-lan-auth No Types Assigned	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nx-os-lan-auth Patch, Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2019-1594
NVD Published Date:
03/06/2019
NVD Last Modified:
03/15/2019

You are viewing this page in an unauthorized frame window.

Information Technology Laboratory

National Vulnerability Database