CVE-2017-3883 - Vulnerability Details

A vulnerability in the authentication, authorization, and accounting (AAA) implementation of Cisco Firepower Extensible Operating System (FXOS) and NX-OS System Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability occurs because AAA processes prevent the NX-OS System Manager from receiving keepalive messages when an affected device receives a high rate of login attempts, such as in a brute-force login attack. System memory can run low on the FXOS devices under the same conditions, which could cause the AAA process to unexpectedly restart or cause the device to reload. An attacker could exploit this vulnerability by performing a brute-force login attack against a device that is configured with AAA security services. A successful exploit could allow the attacker to cause the affected device to reload. This vulnerability affects the following Cisco products if they are running Cisco FXOS or NX-OS System Software that is configured for AAA services: Firepower 4100 Series Next-Generation Firewall, Firepower 9300 Security Appliance, Multilayer Director Switches, Nexus 1000V Series Switches, Nexus 1100 Series Cloud Services Platforms, Nexus 2000 Series Switches, Nexus 3000 Series Switches, Nexus 3500 Platform Switches, Nexus 5000 Series Switches, Nexus 5500 Platform Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Nexus 9000 Series Switches in NX-OS mode, Nexus 9500 R-Series Line Cards and Fabric Modules, Unified Computing System (UCS) 6100 Series Fabric Interconnects, UCS 6200 Series Fabric Interconnects, UCS 6300 Series Fabric Interconnects. Cisco Bug IDs: CSCuq58760, CSCuq71257, CSCur97432, CSCus05214, CSCux54898, CSCvc33141, CSCvd36971, CSCve03660.

No CVSS v4.0

No CVSS v3.1

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.02619.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

AND

cpe:2.3:o:cisco:firepower_extensible_operating_system:*:*:*:*:*:*:*:*

cpe:2.3:h:cisco:firepower_4100:-:*:*:*:*:*:*:*

Configuration 2 [-]

AND

cpe:2.3:o:cisco:fxos:2.3:*:*:*:*:*:*:*

cpe:2.3:h:cisco:firepower_9300:-:*:*:*:*:*:*:*

Configuration 3 [-]

AND

OR	cpe:2.3:o:cisco:nx-os:5.2:::::::*
	cpe:2.3:o:cisco:nx-os:6.2:::::::*
	cpe:2.3:o:cisco:nx-os:6.3:::::::*
	cpe:2.3:o:cisco:nx-os:7.3:::::::*
	cpe:2.3:o:cisco:nx-os:8.1:::::::*
	cpe:2.3:o:cisco:nx-os:8.2:::::::*

cpe:2.3:h:cisco:mds_9000:-:*:*:*:*:*:*:*

Configuration 4 [-]

AND

OR	cpe:2.3:o:cisco:nx-os::::::::
	cpe:2.3:o:cisco:nx-os:5.2:::::::*

OR	cpe:2.3:h:cisco:nexus_1000v:-:::::::*
	cpe:2.3:h:cisco:nexus_1100v:-:::::::*

Configuration 5 [-]

AND

OR	cpe:2.3:o:cisco:nx-os::::::::
	cpe:2.3:o:cisco:nx-os:7.0:::::::*

OR	cpe:2.3:h:cisco:nexus_3000:-:::::::*
	cpe:2.3:h:cisco:nexus_3016:-:::::::*
	cpe:2.3:h:cisco:nexus_3016q:-:::::::*
	cpe:2.3:h:cisco:nexus_3048:-:::::::*
	cpe:2.3:h:cisco:nexus_3064:-:::::::*
	cpe:2.3:h:cisco:nexus_3064t:-:::::::*
	cpe:2.3:h:cisco:nexus_3064x:-:::::::*

Configuration 6 [-]

AND

cpe:2.3:o:cisco:nx-os:7.0\(3\)i3\(1\):*:*:*:*:*:*:*

OR	cpe:2.3:h:cisco:nexus_3500:-:::::::*
	cpe:2.3:h:cisco:nexus_3524:-:::::::*
	cpe:2.3:h:cisco:nexus_3548:-:::::::*

Configuration 7 [-]

AND

cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*

OR	cpe:2.3:h:cisco:nexus_2000:-:::::::*
	cpe:2.3:h:cisco:nexus_5000:-:::::::*
	cpe:2.3:h:cisco:nexus_5010:-:::::::*
	cpe:2.3:h:cisco:nexus_5010p_switch:-:::::::*
	cpe:2.3:h:cisco:nexus_5500:-:::::::*
	cpe:2.3:h:cisco:nexus_5548p:-:::::::*
	cpe:2.3:h:cisco:nexus_5548up:-:::::::*
	cpe:2.3:h:cisco:nexus_5596t:-:::::::*
	cpe:2.3:h:cisco:nexus_5596up:-:::::::*
	cpe:2.3:h:cisco:nexus_5600:-:::::::*
	cpe:2.3:h:cisco:nexus_56128p:-:::::::*
	cpe:2.3:h:cisco:nexus_5624q:-:::::::*
	cpe:2.3:h:cisco:nexus_5648q:-:::::::*
	cpe:2.3:h:cisco:nexus_5672up:-:::::::*
	cpe:2.3:h:cisco:nexus_5696q:-:::::::*
	cpe:2.3:h:cisco:nexus_6000:-:::::::*
	cpe:2.3:h:cisco:nexus_6001:-:::::::*
	cpe:2.3:h:cisco:nexus_6004:-:::::::*
	cpe:2.3:h:cisco:nexus_6004x:-:::::::*

Configuration 8 [-]

AND

cpe:2.3:o:cisco:nx-os:7.1\(0.1\):*:*:*:*:*:*:*

OR	cpe:2.3:h:cisco:nexus_7000:-:::::::*
	cpe:2.3:h:cisco:nexus_7000_10-slot:-:::::::*
	cpe:2.3:h:cisco:nexus_7000_18-slot:-:::::::*
	cpe:2.3:h:cisco:nexus_7000_9-slot:-:::::::*
	cpe:2.3:h:cisco:nexus_7700:-:::::::*

Configuration 9 [-]

AND

OR	cpe:2.3:o:cisco:nx-os:6.1:::::::*
	cpe:2.3:o:cisco:nx-os:7.0:::::::*

cpe:2.3:h:cisco:nexus_9000:-:*:*:*:*:*:*:*

Configuration 10 [-]

AND

cpe:2.3:o:cisco:nx-os:7.0:*:*:*:*:*:*:*

cpe:2.3:h:cisco:9500_r:-:*:*:*:*:*:*:*

Configuration 11 [-]

AND

OR	cpe:2.3:o:cisco:nx-os::::::::
	cpe:2.3:o:cisco:nx-os:2.5:::::::*
	cpe:2.3:o:cisco:nx-os:3.0:::::::*
	cpe:2.3:o:cisco:nx-os:3.1:::::::*
	cpe:2.3:o:cisco:nx-os:3.2:::::::*

OR	cpe:2.3:h:cisco:ucs_6100:-:::::::*
	cpe:2.3:h:cisco:ucs_6200:-:::::::*
	cpe:2.3:h:cisco:ucs_6300:-:::::::*

No data.

Project Subscriptions

Vendors	Products
Cisco Subscribe	9500 R Subscribe Firepower 4100 Subscribe Firepower 9300 Subscribe Firepower Extensible Operating System Subscribe Fxos Subscribe Mds 9000 Subscribe Nexus 1000v Subscribe Nexus 1100v Subscribe Nexus 2000 Subscribe Nexus 3000 Subscribe Nexus 3016 Subscribe Nexus 3016q Subscribe Nexus 3048 Subscribe Nexus 3064 Subscribe Nexus 3064t Subscribe Nexus 3064x Subscribe Nexus 3500 Subscribe Nexus 3524 Subscribe Nexus 3548 Subscribe Nexus 5000 Subscribe Nexus 5010 Subscribe Nexus 5010p Switch Subscribe Nexus 5500 Subscribe Nexus 5548p Subscribe Nexus 5548up Subscribe Nexus 5596t Subscribe Nexus 5596up Subscribe Nexus 5600 Subscribe Nexus 56128p Subscribe Nexus 5624q Subscribe Nexus 5648q Subscribe Nexus 5672up Subscribe Nexus 5696q Subscribe Nexus 6000 Subscribe Nexus 6001 Subscribe Nexus 6004 Subscribe Nexus 6004x Subscribe Nexus 7000 Subscribe Nexus 7000 10-slot Subscribe Nexus 7000 18-slot Subscribe Nexus 7000 9-slot Subscribe Nexus 7700 Subscribe Nexus 9000 Subscribe Nx-os Subscribe Ucs 6100 Subscribe Ucs 6200 Subscribe Ucs 6300 Subscribe

Advisories

Source	ID	Title
EUVD	EUVD-2017-13000	A vulnerability in the authentication, authorization, and accounting (AAA) implementation of Cisco Firepower Extensible Operating System (FXOS) and NX-OS System Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability occurs because AAA processes prevent the NX-OS System Manager from receiving keepalive messages when an affected device receives a high rate of login attempts, such as in a brute-force login attack. System memory can run low on the FXOS devices under the same conditions, which could cause the AAA process to unexpectedly restart or cause the device to reload. An attacker could exploit this vulnerability by performing a brute-force login attack against a device that is configured with AAA security services. A successful exploit could allow the attacker to cause the affected device to reload. This vulnerability affects the following Cisco products if they are running Cisco FXOS or NX-OS System Software that is configured for AAA services: Firepower 4100 Series Next-Generation Firewall, Firepower 9300 Security Appliance, Multilayer Director Switches, Nexus 1000V Series Switches, Nexus 1100 Series Cloud Services Platforms, Nexus 2000 Series Switches, Nexus 3000 Series Switches, Nexus 3500 Platform Switches, Nexus 5000 Series Switches, Nexus 5500 Platform Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Nexus 9000 Series Switches in NX-OS mode, Nexus 9500 R-Series Line Cards and Fabric Modules, Unified Computing System (UCS) 6100 Series Fabric Interconnects, UCS 6200 Series Fabric Interconnects, UCS 6300 Series Fabric Interconnects. Cisco Bug IDs: CSCuq58760, CSCuq71257, CSCur97432, CSCus05214, CSCux54898, CSCvc33141, CSCvd36971, CSCve03660.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
http://www.securityfocus.com/bid/101493
http://www.securitytracker.com/id/1039614
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03846en_us
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171018-aaavty

History

No history.

Projects

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MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2017-10-19T08:00:00

Updated: 2024-08-05T14:39:41.295Z

Reserved: 2016-12-21T00:00:00

Link: CVE-2017-3883

Vulnrichment

No data.

NVD

Status : Deferred

Published: 2017-10-19T08:29:00.950

Modified: 2025-04-20T01:37:25.860

Link: CVE-2017-3883

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-770

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

Project Subscriptions

Projects

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