FKIE_CVE-2012-6436
Vulnerability from fkie_nvd - Published: 2013-01-24 21:55 - Updated: 2026-06-16 23:48
Severity
Summary
The device does not properly validate the data being sent to the buffer. An attacker can send a malformed CIP packet to Port 2222/TCP, Port 2222/UDP, Port 44818/TCP, or Port 44818/UDP, which creates a buffer overflow and causes the CPU to crash. Successful exploitation of this vulnerability could cause loss of availability and a disruption in communications 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
Impacted products
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "1756-ENBT, 1756-EWEB, 1768-ENBT, 1768-EWEB communication modules",
"vendor": "Rockwell Automation",
"versions": [
{
"status": "affected",
"version": "All"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CompactLogix L32E and L35E controllers",
"vendor": "Rockwell Automation",
"versions": [
{
"status": "affected",
"version": "All"
}
]
},
{
"defaultStatus": "unaffected",
"product": "1788-ENBT FLEXLogix adapter",
"vendor": "Rockwell Automation",
"versions": [
{
"status": "affected",
"version": "All"
}
]
},
{
"defaultStatus": "unaffected",
"product": "1794-AENTR FLEX I/O EtherNet/IP adapter",
"vendor": "Rockwell Automation",
"versions": [
{
"status": "affected",
"version": "All"
}
]
},
{
"defaultStatus": "unaffected",
"product": "ControlLogix, CompactLogix, GuardLogix, and SoftLogix",
"vendor": "Rockwell Automation",
"versions": [
{
"lessThanOrEqual": "18",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "CompactLogix and SoftLogix controllers",
"vendor": "Rockwell Automation",
"versions": [
{
"lessThanOrEqual": "19",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "ControlLogix and GuardLogix controllers",
"vendor": "Rockwell Automation",
"versions": [
{
"lessThanOrEqual": "20",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "MicroLogix",
"vendor": "Rockwell Automation",
"versions": [
{
"status": "affected",
"version": "1100"
},
{
"status": "affected",
"version": "1400"
}
]
}
],
"source": "ics-cert@hq.dhs.gov"
}
],
"configurations": [
{
"nodes": [
{
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"criteria": "cpe:2.3:a:rockwellautomation:controllogix_controllers:*:*:*:*:*:*:*:*",
"matchCriteriaId": "37F4D4ED-1915-4155-9F0A-691771AA534B",
"versionEndIncluding": "20",
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"versionEndIncluding": "19",
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{
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"matchCriteriaId": "DD44B55C-BDD7-41CC-91A9-F31ED2FC69E2",
"vulnerable": true
},
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"matchCriteriaId": "C91D5245-DED2-469C-A800-62109F8159C9",
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},
{
"criteria": "cpe:2.3:h:rockwellautomation:1794-aentr_flex_i\\/o_ethernet\\/ip_adapter:-:*:*:*:*:*:*:*",
"matchCriteriaId": "0BD25E6B-6AE1-4B8C-A086-F5E152CAAA60",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:rockwellautomation:compactlogix:*:*:*:*:*:*:*:*",
"matchCriteriaId": "AA199887-E8F7-48EE-B1E0-9EF2E439DACE",
"versionEndIncluding": "18",
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{
"criteria": "cpe:2.3:h:rockwellautomation:compactlogix_controllers:*:*:*:*:*:*:*:*",
"matchCriteriaId": "A763D845-B091-47A4-8A29-A1CD19C1E4F2",
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"matchCriteriaId": "19B8ED27-2512-4A42-973C-99D300963046",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:rockwellautomation:compactlogix_l35e_controller:-:*:*:*:*:*:*:*",
"matchCriteriaId": "7EFC590C-01C1-48D1-A5BE-0F70BE7F36B9",
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{
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"versionEndIncluding": "18",
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},
{
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"matchCriteriaId": "887A3369-548C-42B0-82C5-92CB161D3B7A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:rockwellautomation:guardlogix:*:*:*:*:*:*:*:*",
"matchCriteriaId": "E98626DD-BC79-473E-B25F-92C9BA12F6DD",
"versionEndIncluding": "18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:h:rockwellautomation:softlogix:*:*:*:*:*:*:*:*",
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"negate": false,
"operator": "OR"
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The device does not properly validate the data being sent to the buffer. An attacker can send a malformed CIP packet to Port 2222/TCP, Port 2222/UDP, Port 44818/TCP, or Port 44818/UDP, which creates a buffer overflow and causes the CPU to crash. Successful exploitation of this vulnerability could cause loss of availability and a disruption in communications with other connected devices.\n\n\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"
},
{
"lang": "es",
"value": "Desbordamiento de b\u00fafer en varios productos Rockwell Automation EtherNet/IP; 1756-ENBT, 1756-EWEB, 1768-ENBT, y 1768-EWEB; controladores CompactLogix L32E y L35E; adaptodor 1788-ENBT FLEXLogix; adaptador 1794-AENTR FLEX I/O EtherNet/IP; ControlLogix 18 y anteriores; CompactLogix 18 y anteriores; GuardLogix 18 y anteriores; SoftLogix 18 y anteriores; CompactLogix 19 y anteriores; SoftLogix 19 y anteriores; ControlLogix 20 y anteriores; GuardLogix 20 y anteriores; y MicroLogix 1100 y 1400, permite a atacantes remotos provocar una denegaci\u00f3n de servicio (ca\u00edda de CPU y agotamiento de la comunicaci\u00f3n) a trav\u00e9s de un paquete CIP mal formado."
}
],
"id": "CVE-2012-6436",
"lastModified": "2026-06-16T23:48:06.090",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 7.8,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "ics-cert@hq.dhs.gov",
"type": "Secondary",
"userInteractionRequired": false
},
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
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"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 7.8,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2012-6436",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-03T13:40:25.252695Z",
"version": "2.0.3"
}
}
]
},
"published": "2013-01-24T21:55:01.477",
"references": [
{
"source": "ics-cert@hq.dhs.gov",
"url": "http://rockwellautomation.custhelp.com/app/answers/detail/a_id/54102"
},
{
"source": "ics-cert@hq.dhs.gov",
"url": "https://rockwellautomation.custhelp.com/app/answers/detail/a_id/470154"
},
{
"source": "ics-cert@hq.dhs.gov",
"url": "https://rockwellautomation.custhelp.com/app/answers/detail/aid/470155"
},
{
"source": "ics-cert@hq.dhs.gov",
"url": "https://rockwellautomation.custhelp.com/app/answers/detail/aid/470156"
},
{
"source": "ics-cert@hq.dhs.gov",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-13-011-03"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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],
"url": "http://www.us-cert.gov/control_systems/pdf/ICSA-13-011-03.pdf"
}
],
"sourceIdentifier": "ics-cert@hq.dhs.gov",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-119"
}
],
"source": "ics-cert@hq.dhs.gov",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-119"
}
],
"source": "nvd@nist.gov",
"type": "Secondary"
}
]
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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