variot - var-201301-0164

var-201301-0164

Vulnerability from variot

Rockwell Automation EtherNet/IP products; 1756-ENBT, 1756-EWEB, 1768-ENBT, and 1768-EWEB communication modules; CompactLogix L32E and L35E controllers; 1788-ENBT FLEXLogix adapter; 1794-AENTR FLEX I/O EtherNet/IP adapter; ControlLogix 18 and earlier; CompactLogix 18 and earlier; GuardLogix 18 and earlier; SoftLogix 18 and earlier; CompactLogix controllers 19 and earlier; SoftLogix controllers 19 and earlier; ControlLogix controllers 20 and earlier; GuardLogix controllers 20 and earlier; and MicroLogix 1100 and 1400 allow remote attackers to cause a denial of service (control and communication outage) via a CIP message that specifies a logic-execution stop and fault. plural Rockwell Automation Product has a service disruption ( Stop control and communication ) There is a vulnerability that becomes a condition.Stops logic execution and causes failure by a third party CIP Service disruption via message ( Stop control and communication ) There is a possibility of being put into a state. Rockwell Automation MicroLogix is a programmable controller platform. attack. Rockwell's products are affected by this vulnerability: all EtherNet/IP products that comply with CIP and EtherNet/IP specifications. An attacker can exploit these issues to crash the affected application, denying service to legitimate users. When sending specially crafted CIP packets to ports 2222/TCP, Port 2222/UDP, Port 44818/TCP, and Port 44818/UDP, this vulnerability can cause buffer overflow , causing the NIC to deny service

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CVE-2012-6435 (GCVE-0-2012-6435)

Vulnerability from cvelistv5

Published

2013-01-24 21:00

Modified

2025-06-30 21:37

Severity ?

CWE

CWE-284

Summary

When an affected product receives a valid CIP message from an unauthorized or unintended source to Port 2222/TCP, Port 2222/UDP, Port 44818/TCP, or Port 44818/UDP that instructs the CPU to stop logic execution and enter a fault state, a DoS can occur. This situation could cause loss of availability and a disruption of communication with other connected devices. Rockwell Automation EtherNet/IP products; 1756-ENBT, 1756-EWEB, 1768-ENBT, and 1768-EWEB communication modules; CompactLogix L32E and L35E controllers; 1788-ENBT FLEXLogix adapter; 1794-AENTR FLEX I/O EtherNet/IP adapter; ControlLogix 18 and earlier; CompactLogix 18 and earlier; GuardLogix 18 and earlier; SoftLogix 18 and earlier; CompactLogix controllers 19 and earlier; SoftLogix controllers 19 and earlier; ControlLogix controllers 20 and earlier; GuardLogix controllers 20 and earlier; and MicroLogix 1100 and 1400

References

▼	URL	Tags
	https://www.cisa.gov/news-events/ics-advisories/icsa-13-011-03
	https://rockwellautomation.custhelp.com/app/answers/detail/a_id/470154
	https://rockwellautomation.custhelp.com/app/answers/detail/aid/470155
	https://rockwellautomation.custhelp.com/app/answers/detail/aid/470156
	http://rockwellautomation.custhelp.com/app/answers/detail/a_id/54102

Impacted products

Vendor

Product

Version

▼

Rockwell Automation

1756-ENBT, 1756-EWEB, 1768-ENBT, 1768-EWEB communication modules

Version: All

Rockwell Automation	CompactLogix L32E and L35E controllers	Version: All
Rockwell Automation	1788-ENBT FLEXLogix adapter	Version: All
Rockwell Automation	1794-AENTR FLEX I/O EtherNet/IP adapter	Version: All
Rockwell Automation	ControlLogix, CompactLogix, GuardLogix, and SoftLogix	Version: 0 <
Rockwell Automation	CompactLogix and SoftLogix controllers	Version: 0 <
Rockwell Automation	ControlLogix and GuardLogix controllers	Version: 0 <
Rockwell Automation	MicroLogix	Version: 1100 Version: 1400

Show details on NVD website

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              "value": "\u003cp\u003e\n\n\n\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\n\n\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eWhen an affected product receives a valid CIP message from an unauthorized or unintended source to Port 2222/TCP, Port 2222/UDP, Port 44818/TCP, or Port 44818/UDP that instructs the CPU to stop logic execution and enter a fault state, a DoS can occur. This situation could cause loss of availability and a disruption of communication with other connected devices.\u003c/span\u003e\n\n\u003c/span\u003e\n\n\u003c/p\u003e\u003cp\u003eRockwell Automation EtherNet/IP products; 1756-ENBT, 1756-EWEB, 1768-ENBT, and 1768-EWEB communication modules; CompactLogix L32E and L35E controllers; 1788-ENBT FLEXLogix adapter; 1794-AENTR FLEX I/O EtherNet/IP adapter; ControlLogix 18 and earlier; CompactLogix 18 and earlier; GuardLogix 18 and earlier; SoftLogix 18 and earlier; CompactLogix controllers 19 and earlier; SoftLogix controllers 19 and earlier; ControlLogix controllers 20 and earlier; GuardLogix controllers 20 and earlier; and MicroLogix 1100 and 1400\u0026nbsp;\u003cbr\u003e\u003c/p\u003e"
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          "value": "When an affected product receives a valid CIP message from an unauthorized or unintended source to Port 2222/TCP, Port 2222/UDP, Port 44818/TCP, or Port 44818/UDP that instructs the CPU to stop logic execution and enter a fault state, a DoS can occur. This situation could cause loss of availability and a disruption of communication with other connected devices.\n\n\n\n\n\nRockwell Automation EtherNet/IP products; 1756-ENBT, 1756-EWEB, 1768-ENBT, and 1768-EWEB communication modules; CompactLogix L32E and L35E controllers; 1788-ENBT FLEXLogix adapter; 1794-AENTR FLEX I/O EtherNet/IP adapter; ControlLogix 18 and earlier; CompactLogix 18 and earlier; GuardLogix 18 and earlier; SoftLogix 18 and earlier; CompactLogix controllers 19 and earlier; SoftLogix controllers 19 and earlier; ControlLogix controllers 20 and earlier; GuardLogix controllers 20 and earlier; and MicroLogix 1100 and 1400"
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            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 7.8,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
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              "description": "CWE-284",
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        "dateUpdated": "2025-06-30T21:37:15.940Z",
        "orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
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          "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-13-011-03"
        },
        {
          "url": "https://rockwellautomation.custhelp.com/app/answers/detail/a_id/470154"
        },
        {
          "url": "https://rockwellautomation.custhelp.com/app/answers/detail/aid/470155"
        },
        {
          "url": "https://rockwellautomation.custhelp.com/app/answers/detail/aid/470156"
        },
        {
          "url": "http://rockwellautomation.custhelp.com/app/answers/detail/a_id/54102"
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              "value": "\u003cp\u003eAccording to Rockwell, any of the above products that become affected by a vulnerability can be reset by rebooting or power cycling the affected product. After the reboot, the affected product may require some reconfiguration.\u003c/p\u003e\u003cp\u003eTo mitigate the vulnerabilities, Rockwell has developed and released security patches on July 18, 2012, to address each of the issues. To download and install the patches please refer to Rockwell\u2019s Advisories at:\u003c/p\u003e\u003cp\u003e\u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://rockwellautomation.custhelp.com/app/answers/detail/a_id/470154\"\u003ehttps://rockwellautomation.custhelp.com/app/answers/detail/a_id/470154\u003c/a\u003e\u003cbr\u003e\u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://rockwellautomation.custhelp.com/app/answers/detail/aid/470155\"\u003ehttps://rockwellautomation.custhelp.com/app/answers/detail/aid/470155\u003c/a\u003e\u003cbr\u003e\u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://rockwellautomation.custhelp.com/app/answers/detail/aid/470156\"\u003ehttps://rockwellautomation.custhelp.com/app/answers/detail/aid/470156\u003c/a\u003e\u003c/p\u003e\u003cp\u003eFor more information on security with Rockwell Automation products, please refer to \u003ca target=\"_blank\" rel=\"nofollow\" href=\"http://rockwellautomation.custhelp.com/app/answers/detail/a_id/54102\"\u003eRockwell\u2019s Security Advisory Index\u003c/a\u003e.\u003c/p\u003e\u003cbr\u003e"
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          "value": "According to Rockwell, any of the above products that become affected by a vulnerability can be reset by rebooting or power cycling the affected product. After the reboot, the affected product may require some reconfiguration.\n\nTo mitigate the vulnerabilities, Rockwell has developed and released security patches on July 18, 2012, to address each of the issues. To download and install the patches please refer to Rockwell\u2019s Advisories at:\n\n https://rockwellautomation.custhelp.com/app/answers/detail/a_id/470154 \n https://rockwellautomation.custhelp.com/app/answers/detail/aid/470155 \n https://rockwellautomation.custhelp.com/app/answers/detail/aid/470156 \n\nFor more information on security with Rockwell Automation products, please refer to  Rockwell\u2019s Security Advisory Index http://rockwellautomation.custhelp.com/app/answers/detail/a_id/54102 ."
        }
      ],
      "source": {
        "advisory": "ICSA-13-011-03",
        "discovery": "EXTERNAL"
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      "title": "Rockwell Automation ControlLogix PLC Improper Access Control",
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              "value": "\u003cp\u003eRockwell recommends updating to the newest firmware patches to fix the vulnerabilities, but if not able to do so right away, then Rockwell advises immediately employing the following mitigations for each of the affected products.\u003c/p\u003e\u003cp\u003eTo mitigate the vulnerabilities pertaining to receiving valid CIP packets:\u003c/p\u003e\u003col\u003e\u003cli\u003eBlock all traffic to the Ethernet/IP or other CIP protocol-based devices from outside the Manufacturing Zone by restricting or blocking access to TCP and UDP Ports 2222 and 44818 using appropriate security technology such as a firewall or Unified Threat Management (UTM).\u003c/li\u003e\u003cli\u003eEmploy a UTM appliance that specifically supports CIP message filtering.\u003c/li\u003e\u003c/ol\u003e\n\n\u003cp\u003eIn addition to the above, Rockwell recommends concerned customers remain vigilant and continue to follow security strategies that help reduce risk and enhance overall control system security. Where possible, they suggest you apply multiple recommendations and complement this list with your own best-practices:\u003c/p\u003e\u003col\u003e\u003cli\u003eEmploy layered security and defense-in-depth methods in system design to restrict and control access to individual products and control networks. Refer to \u003ca target=\"_blank\" rel=\"nofollow\" href=\"http://www.ab.com/networks/architectures.html\"\u003ehttp://www.ab.com/networks/architectures.html\u003c/a\u003e for comprehensive information about implementing validated architectures designed to deliver these measures.\u003c/li\u003e\u003cli\u003eRestrict physical and electronic access to automation products, networks, and systems to only those individuals authorized to be in contact with control system equipment.\u003c/li\u003e\u003cli\u003eEmploy firewalls with ingress/egress filtering, intrusion detection/prevention systems, and validate all configurations. Evaluate firewall configurations to ensure other appropriate inbound and outbound traffic is blocked.\u003c/li\u003e\u003cli\u003eUse up-to-date end-point protection software (e.g., antivirus/antimalware software) on all PC-based assets.\u003c/li\u003e\u003cli\u003eMake sure that software and control system device firmware is patched to current releases.\u003c/li\u003e\u003cli\u003ePeriodically change passwords in control system components and infrastructure devices.\u003c/li\u003e\u003cli\u003eWhere applicable, set the controller key-switch/mode-switch to RUN mode.\u003c/li\u003e\u003c/ol\u003e\n\n\n\n\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eFor more information on security with Rockwell Automation products, please refer to \u003c/span\u003e\u003ca target=\"_blank\" rel=\"nofollow\" href=\"http://rockwellautomation.custhelp.com/app/answers/detail/a_id/54102\"\u003eRockwell\u2019s Security Advisory Index\u003c/a\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e.\u003c/span\u003e\n\n\u003cbr\u003e"
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          "value": "Rockwell recommends updating to the newest firmware patches to fix the vulnerabilities, but if not able to do so right away, then Rockwell advises immediately employing the following mitigations for each of the affected products.\n\nTo mitigate the vulnerabilities pertaining to receiving valid CIP packets:\n\n  *  Block all traffic to the Ethernet/IP or other CIP protocol-based devices from outside the Manufacturing Zone by restricting or blocking access to TCP and UDP Ports 2222 and 44818 using appropriate security technology such as a firewall or Unified Threat Management (UTM).\n  *  Employ a UTM appliance that specifically supports CIP message filtering.\n\n\nIn addition to the above, Rockwell recommends concerned customers remain vigilant and continue to follow security strategies that help reduce risk and enhance overall control system security. Where possible, they suggest you apply multiple recommendations and complement this list with your own best-practices:\n\n  *  Employ layered security and defense-in-depth methods in system design to restrict and control access to individual products and control networks. Refer to  http://www.ab.com/networks/architectures.html  for comprehensive information about implementing validated architectures designed to deliver these measures.\n  *  Restrict physical and electronic access to automation products, networks, and systems to only those individuals authorized to be in contact with control system equipment.\n  *  Employ firewalls with ingress/egress filtering, intrusion detection/prevention systems, and validate all configurations. Evaluate firewall configurations to ensure other appropriate inbound and outbound traffic is blocked.\n  *  Use up-to-date end-point protection software (e.g., antivirus/antimalware software) on all PC-based assets.\n  *  Make sure that software and control system device firmware is patched to current releases.\n  *  Periodically change passwords in control system components and infrastructure devices.\n  *  Where applicable, set the controller key-switch/mode-switch to RUN mode.\n\n\n\n\nFor more information on security with Rockwell Automation products, please refer to  Rockwell\u2019s Security Advisory Index http://rockwellautomation.custhelp.com/app/answers/detail/a_id/54102 ."
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          "ASSIGNER": "ics-cert@hq.dhs.gov",
          "ID": "CVE-2012-6439",
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    "assignerShortName": "icscert",
    "cveId": "CVE-2012-6435",
    "datePublished": "2013-01-24T21:00:00Z",
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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