According to its self-reported version, Cisco NX-OS Software is affected by a denial of service (DoS) vulnerability exists in Cisco Discovery Protocol due to failure to properly validate certain fields within a Cisco Discovery Protocol message. An unauthenticated, adjacent attacker can exploit this issue, via submiting a Cisco Discovery Protocol message, to cause the system to stop responding.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

根據其自我報告的版本，Cisco NX-OS 軟體受到 Cisco 探索通訊協定中一個拒絕服務弱點影響，這是因為未正確驗證 Cisco 探索通訊協定訊息中的特定欄位所致。未經驗證的鄰近攻擊者可透過提交 Cisco 探索通訊協定訊息來利用此問題，造成系統停止回應。

如需詳細資訊，請參閱隨附的 Cisco BID 和 Cisco 安全性公告。

自己報告されたバージョンによると、Cisco NX-OSソフトウェアは、Cisco Discovery Protocolメッセージ内の特定のフィールドを適切に検証できないため、Cisco Discovery Protocolに存在するサービス拒否（DoS）の脆弱性の影響を受けます。認証されていない近接の攻撃者がこの問題を悪用して、Cisco Discovery Protocolメッセージの送信により、システムの応答を停止させる可能性があります。

詳細については、付属の Cisco BID および Cisco Security Advisory を参照してください。

根据其自我报告的版本，Cisco NX-OS 软件受到 Cisco 发现协议中存在的拒绝服务 (DoS) 漏洞影响，这是未能正确验证 Cisco 发现协议消息中的某些字段所致。未经身份验证的邻近攻击者可利用此问题，通过提交 Cisco 发现协议消息，造成系统停止响应。

若要了解更多信息，请参见所附的 Cisco BID 和 Cisco 安全公告。

A vulnerability in the Cisco Discovery Protocol (formerly known as CDP) subsystem of devices running, or based on, Cisco NX-OS Software contain a vulnerability that could allow an unauthenticated, adjacent attacker to create a denial of service (DoS) condition. The vulnerability is due to a failure to properly validate certain fields within a Cisco Discovery Protocol message prior to processing it. An attacker with the ability to submit a Cisco Discovery Protocol message designed to trigger the issue could cause a DoS condition on an affected device while the device restarts. This vulnerability affects Firepower 4100 Series Next-Generation Firewall, Firepower 9300 Security Appliance, MDS 9000 Series 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 3600 Platform 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, UCS 6100 Series Fabric Interconnects, UCS 6200 Series Fabric Interconnects, UCS 6300 Series Fabric Interconnects. Cisco Bug IDs: CSCvc89242, CSCve40943, CSCve40953, CSCve40965, CSCve40970, CSCve40978, CSCve40992, CSCve41000, CSCve41007.

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ID	Name	Product	Family	Published	Updated	Severity
138349	Cisco FXOS, NX-OS, and UCS Manager Software Cisco Discovery Protocol DoS (cisco-sa-20180620-nxos-cdp)	Nessus	CISCO	7/9/2020	5/20/2021	medium
138350	Cisco FXOS, NX-OS, and UCS Manager Software Cisco Discovery Protocol DoS (cisco-sa-20180620-nxos-cdp)	Nessus	CISCO	7/9/2020	5/20/2021	medium
138349	Cisco FXOS、NX-OS 和 UCS Manager 軟體 Cisco 探索通訊協定 DoS (cisco-sa-20180620-nxos-cdp)	Nessus	CISCO	7/9/2020	5/20/2021	medium
138350	Cisco FXOS、NX-OS 和 UCS Manager 軟體 Cisco 探索通訊協定 DoS (cisco-sa-20180620-nxos-cdp)	Nessus	CISCO	7/9/2020	5/20/2021	medium
138349	Cisco FXOS、NX-OS、およびUCS ManagerソフトウェアのCisco Discovery ProtocolにおけるDoS（cisco-sa-20180620-nxos-cdp）	Nessus	CISCO	7/9/2020	5/20/2021	medium
138350	Cisco FXOS、NX-OS、およびUCS ManagerソフトウェアのCisco Discovery ProtocolにおけるDoS（cisco-sa-20180620-nxos-cdp）	Nessus	CISCO	7/9/2020	5/20/2021	medium
138349	Cisco FXOS、NX-OS 和 UCS Manager 软件的 Cisco 发现协议拒绝服务漏洞 (cisco-sa-20180620-nxos-cdp)	Nessus	CISCO	7/9/2020	5/20/2021	medium
138350	Cisco FXOS、NX-OS 和 UCS Manager 软件的 Cisco 发现协议拒绝服务漏洞 (cisco-sa-20180620-nxos-cdp)	Nessus	CISCO	7/9/2020	5/20/2021	medium
501388	Cisco FXOS, NX-OS, and UCS Manager Software Cisco Discovery Protocol Denial of Service (CVE-2018-0331)	Tenable OT Security	Tenable.ot	7/25/2023	7/26/2023	medium

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