A vulnerability in the ARP packet processing of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series Security Appliances could allow an unauthenticated, adjacent attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition on an affected device. The vulnerability is due to incorrect processing of ARP packets received by the management interface of an affected device. An attacker could exploit this vulnerability by sending a series of unicast ARP packets in a short timeframe that would reach the management interface of an affected device. A successful exploit could allow the attacker to consume resources on an affected device, which would prevent the device from sending internal system keepalives and eventually cause the device to reload, resulting in a denial of service (DoS) condition.

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由于对 FTP 数据的验证不足，Firepower Threat Defense (FTD) 软件的 FTP 检查引擎中存在拒绝服务漏洞。未经身份验证的远程攻击者可利用此问题，造成系统停止响应。

  请参阅随附的 Cisco BID 和 Cisco 安全公告，了解更多信息。

  请注意，Nessus 尚未测试此问题，而是只依靠应用程序自我报告的版本号。

由于对 FTP 数据的验证不足，Cisco 自适应安全设备 (ASA) 软件的 FTP 检查引擎中存在拒绝服务漏洞。未经身份验证的远程攻击者可利用此问题，造成系统停止响应。

请参阅随附的 Cisco BID 和 Cisco 安全公告，了解更多信息。

请注意，Nessus 尚未测试此问题，而是只依靠应用程序自我报告的版本号。

Cisco 自適性安全裝置 (ASA) 軟體的 ARP 封包處理元件中存在拒絕服務弱點，這是未充分驗證 ARP 資料所致。未經驗證的相鄰攻擊者可利用此弱點，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。

請注意，Nessus 並未測試此問題，而是僅依據應用程式自我報告的版本號碼。

Cisco Firepower 威脅防禦 (FTD) 軟體的 ARP 封包處理元件中存在拒絕服務弱點，這是未充分驗證 ARP 資料所致。未經驗證的相鄰攻擊者可利用此弱點，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。

  請注意，Nessus 並未測試此問題，而是僅依據應用程式自我報告的版本號碼。

ARPデータの検証が不十分なため、Cisco Adaptive Security Appliance（ASA）ソフトウェアのARPパケット処理コンポーネントにサービス拒否の脆弱性があります。認証されていないリモートの攻撃者がこれを悪用して、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。

Nessusはこの問題をテストしておらず、代わりにアプリケーションの自己報告されたバージョン番号にのみ依存しています。

ARPデータの検証が不十分なため、Cisco Firepower Threat Defence（FTD）ソフトウェアのARPパケット処理コンポーネントにサービス拒否の脆弱性があります。An unauthenticated, adjacent attacker can exploit this to cause to cause the system to stop responding.

  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。

  Nessusはこの問題をテストしておらず、代わりにアプリケーションの自己報告されたバージョン番号にのみ依存しています。

A denial of service vulnerability exists in the ARP packet processing component of Cisco Adaptive Security Appliance (ASA) software due to insufficient validation of ARP data. An unauthenticated, adjacent attacker can exploit this to cause to cause the system to stop responding.

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

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

A denial of service vulnerability exists in the ARP packet processing component of Cisco Firepower Threat Defence   (FTD) software due to insufficient validation of ARP data. An unauthenticated, adjacent attacker can exploit this to   cause to cause the system to stop responding.

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

  Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version   number.

ID	Name	Product	Family	Published	Updated	Severity
506135	Cisco ASA Uncontrolled Resource Consumption (CVE-2020-3334)	Tenable OT Security	Tenable.ot	10/6/2026	10/7/2026	high
136615	Cisco Firepower威胁防御拒绝服务（DoS）（cisco-sa-fp2100-arp-dos-kLdCK8ks）	Nessus	CISCO	5/15/2020	3/31/2023	high
136614	Cisco Adaptive Security Appliance拒绝服务（cisco-sa-fp2100-arp-dos-kLdCK8ks）	Nessus	CISCO	5/15/2020	3/31/2023	high
136614	Cisco 自適性安全裝置拒絕服務 (cisco-sa-fp2100-arp-dos-kLdCK8ks)	Nessus	CISCO	5/15/2020	3/31/2023	high
136615	Cisco Firepower威脅防禦拒絕服務 (DoS) (cisco-sa-fp2100-arp-dos-kLdCK8ks)	Nessus	CISCO	5/15/2020	3/31/2023	high
136614	Cisco Adaptive Security Applianceのサービス拒否（cisco-sa-fp2100-arp-dos-kLdCK8ks）	Nessus	CISCO	5/15/2020	3/31/2023	high
136615	Cisco Firepower Threat Defenseのサービス拒否（DoS）（cisco-sa-fp2100-arp-dos-kLdCK8ks）	Nessus	CISCO	5/15/2020	3/31/2023	high
136614	Cisco Adaptive Security Appliance Denial of Service (cisco-sa-fp2100-arp-dos-kLdCK8ks)	Nessus	CISCO	5/15/2020	3/31/2023	high
136615	Cisco Firepower Threat Defense Denial of Service (DoS) (cisco-sa-fp2100-arp-dos-kLdCK8ks)	Nessus	CISCO	5/15/2020	3/31/2023	high

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