发布日期：2020-09-24
更新日期：2020-10-12

受影响系统：

Cisco Industrial Ethernet 1000 Series Switches
Cisco 2520 Connected Grid Switches
Cisco Catalyst IE3200 Rugged Switches
Cisco Catalyst IE3300 Rugged Switches
Cisco Catalyst IE3400 Heavy Switches
Cisco Catalyst IE3400 Rugged Switches
Cisco Embedded Services 2020 Series Switches
Cisco Embedded Services 3300 Series Switches
Cisco Industrial Ethernet 2000 Series Switches
Cisco Industrial Ethernet 2000U Series Switches
Cisco Industrial Ethernet 3000 Series Switches
Cisco Industrial Ethernet 3010 Series Switches
Cisco Industrial Ethernet 4000 Series Switches
Cisco Industrial Ethernet 4010 Series Switches
Cisco Industrial Ethernet 5000 Series Switches

描述：

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CVE(CAN) ID: CVE-2020-3409

Cisco IOS和IOS XE是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。
Cisco IOS Software和Cisco IOS XE Software的PROFINET功能存在拒绝服务漏洞。该漏洞是源于程序未对发送至受影响设备的特制PROFINET数据包进行正确的逻辑处理。未经身份认证的相邻攻击者可通过向受影响设备发送特制的PROFINET数据包利用该漏洞造成受影响的设备崩溃并重新加载，从而导致设备拒绝服务（DoS）。以下启用了PROFINET功能的产品受到影响：2520 Connected Grid Switches、Catalyst IE3200 Rugged Switches、Catalyst IE3300 Rugged Switches、Catalyst IE3400 Heavy Switches、Catalyst IE3400 Rugged Switches、Embedded Services 2020 Series Switches、Embedded Services 3300 Series Switches、Industrial Ethernet 1000 Series Switches、Industrial Ethernet 2000 Series Switches、Industrial Ethernet 2000U Series Switches、Industrial Ethernet 3000 Series Switches、Industrial Ethernet 3010 Series Switches、Industrial Ethernet 4000 Series Switches、Industrial Ethernet 4010 Series Switches、Industrial Ethernet 5000 Series Switches

<*来源：Cisco
  
  链接：https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-profinet-J9QMCHPB
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建议：

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厂商补丁：

Cisco
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Cisco已经为此发布了一个安全公告（cisco-sa-profinet-J9QMCHPB）以及相应补丁:
cisco-sa-profinet-J9QMCHPB：Cisco IOS and IOS XE Software PROFINET Denial of Service Vulnerability
链接：https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-profinet-J9QMCHPB

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