CVE-2017-3883:详情

CVE-2017-3883

8.6
/
高危
1.5%V4
2017-10-19
08h00 +00:00
Network
2024-08-05
14h39 +00:00
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CVE 描述

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.

CVE 信息

相关弱点

CWE-ID 弱点名称 来源
CWE-770 Allocation of Resources Without Limits or Throttling
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

指标

指标 评分 严重程度 CVSS 向量 来源
V3.0 8.6 HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Base: Exploitabilty Metrics

The Exploitability metrics reflect the characteristics of the thing that is vulnerable, which we refer to formally as the vulnerable component.

Attack Vector

This metric reflects the context by which vulnerability exploitation is possible.

Network

A vulnerability exploitable with network access means the vulnerable component is bound to the network stack and the attacker's path is through OSI layer 3 (the network layer). Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable one or more network hops away (e.g. across layer 3 boundaries from routers).

Attack Complexity

This metric describes the conditions beyond the attacker's control that must exist in order to exploit the vulnerability.

Low

Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.

Privileges Required

This metric describes the level of privileges an attacker must possess before successfully exploiting the vulnerability.

None

The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.

User Interaction

This metric captures the requirement for a user, other than the attacker, to participate in the successful compromise of the vulnerable component.

None

The vulnerable system can be exploited without interaction from any user.

Base: Scope Metrics

An important property captured by CVSS v3.0 is the ability for a vulnerability in one software component to impact resources beyond its means, or privileges.

Scope

Formally, Scope refers to the collection of privileges defined by a computing authority (e.g. an application, an operating system, or a sandbox environment) when granting access to computing resources (e.g. files, CPU, memory, etc). These privileges are assigned based on some method of identification and authorization. In some cases, the authorization may be simple or loosely controlled based upon predefined rules or standards. For example, in the case of Ethernet traffic sent to a network switch, the switch accepts traffic that arrives on its ports and is an authority that controls the traffic flow to other switch ports.

Changed

An exploited vulnerability can affect resources beyond the authorization privileges intended by the vulnerable component. In this case the vulnerable component and the impacted component are different.

Base: Impact Metrics

The Impact metrics refer to the properties of the impacted component.

Confidentiality Impact

This metric measures the impact to the confidentiality of the information resources managed by a software component due to a successfully exploited vulnerability.

None

There is no loss of confidentiality within the impacted component.

Integrity Impact

This metric measures the impact to integrity of a successfully exploited vulnerability. Integrity refers to the trustworthiness and veracity of information.

None

There is no loss of integrity within the impacted component.

Availability Impact

This metric measures the impact to the availability of the impacted component resulting from a successfully exploited vulnerability.

High

There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Temporal Metrics

The Temporal metrics measure the current state of exploit techniques or code availability, the existence of any patches or workarounds, or the confidence that one has in the description of a vulnerability.

Environmental Metrics

nvd@nist.gov
V2 5 AV:N/AC:L/Au:N/C:N/I:N/A:P nvd@nist.gov

EPSS

EPSS 是一种预测漏洞被利用可能性的评分模型。

EPSS 评分

EPSS 模型生成一个介于 0 到 1(即 0% 到 100%)之间的概率评分。评分越高,漏洞被利用的可能性越大。

EPSS 百分位

百分位用于根据 EPSS 评分对 CVE 进行排名。例如,EPSS 百分位为第 95 的 CVE,其被利用的可能性高于 95% 的其他 CVE。因此,百分位可用于比较不同 CVE 的 EPSS 评分。

相关产品

配置 0

Cisco>>Firepower_extensible_operating_system >> Version 至(含) 2.3

Cisco>>Firepower_4100 >> Version -

配置 0

Cisco>>Fxos >> Version 2.3

Cisco>>Firepower_9300 >> Version -

配置 0

Cisco>>Nx-os >> Version 5.2

Cisco>>Nx-os >> Version 6.2

Cisco>>Nx-os >> Version 6.3

Cisco>>Nx-os >> Version 7.3

Cisco>>Nx-os >> Version 8.1

Cisco>>Nx-os >> Version 8.2

Cisco>>Mds_9000 >> Version -

配置 0

Cisco>>Nx-os >> Version 至(含) 4.1

Cisco>>Nx-os >> Version 5.2

Cisco>>Nexus_1000v >> Version -

Cisco>>Nexus_1100v >> Version -

配置 0

Cisco>>Nx-os >> Version 至(含) 6.0

Cisco>>Nx-os >> Version 7.0

Cisco>>Nexus_3000 >> Version -

Cisco>>Nexus_3016 >> Version -

Cisco>>Nexus_3016q >> Version -

Cisco>>Nexus_3048 >> Version -

Cisco>>Nexus_3064 >> Version -

Cisco>>Nexus_3064t >> Version -

Cisco>>Nexus_3064x >> Version -

配置 0

Cisco>>Nx-os >> Version 7.0\(3\)i3\(1\)

Cisco>>Nexus_3500 >> Version -

Cisco>>Nexus_3524 >> Version -

Cisco>>Nexus_3548 >> Version -

配置 0

Cisco>>Nx-os >> Version 至(含) 5.2

Cisco>>Nexus_2000 >> Version -

Cisco>>Nexus_5000 >> Version -

Cisco>>Nexus_5010 >> Version -

Cisco>>Nexus_5010p_switch >> Version -

Cisco>>Nexus_5500 >> Version -

Cisco>>Nexus_5548p >> Version -

Cisco>>Nexus_5548up >> Version -

Cisco>>Nexus_5596t >> Version -

Cisco>>Nexus_5596up >> Version -

Cisco>>Nexus_5600 >> Version -

Cisco>>Nexus_56128p >> Version -

Cisco>>Nexus_5624q >> Version -

Cisco>>Nexus_5648q >> Version -

Cisco>>Nexus_5672up >> Version -

Cisco>>Nexus_5696q >> Version -

Cisco>>Nexus_6000 >> Version -

Cisco>>Nexus_6001 >> Version -

Cisco>>Nexus_6004 >> Version -

Cisco>>Nexus_6004x >> Version -

配置 0

Cisco>>Nx-os >> Version 7.1\(0.1\)

Cisco>>Nexus_7000 >> Version -

Cisco>>Nexus_7000_10-slot >> Version -

Cisco>>Nexus_7000_18-slot >> Version -

Cisco>>Nexus_7000_9-slot >> Version -

Cisco>>Nexus_7700 >> Version -

配置 0

Cisco>>Nx-os >> Version 6.1

Cisco>>Nx-os >> Version 7.0

Cisco>>Nexus_9000 >> Version -

配置 0

Cisco>>Nx-os >> Version 7.0

Cisco>>9500_r >> Version -

配置 0

Cisco>>Nx-os >> Version 至(含) 2.2

Cisco>>Nx-os >> Version 2.5

Cisco>>Nx-os >> Version 3.0

Cisco>>Nx-os >> Version 3.1

Cisco>>Nx-os >> Version 3.2

Cisco>>Ucs_6100 >> Version -

Cisco>>Ucs_6200 >> Version -

Cisco>>Ucs_6300 >> Version -

参考资料

http://www.securitytracker.com/id/1039614
Tags : vdb-entry, x_refsource_SECTRACK
http://www.securityfocus.com/bid/101493
Tags : vdb-entry, x_refsource_BID