GSD-2021-34596
Vulnerability from gsd - Updated: 2023-12-13 01:23Details
A crafted request may cause a read access to an uninitialized pointer in CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56, resulting in a denial-of-service condition.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-34596",
"description": "A crafted request may cause a read access to an uninitialized pointer in CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56, resulting in a denial-of-service condition.",
"id": "GSD-2021-34596"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2021-34596"
],
"details": "A crafted request may cause a read access to an uninitialized pointer in CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56, resulting in a denial-of-service condition.",
"id": "GSD-2021-34596",
"modified": "2023-12-13T01:23:14.537499Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "info@cert.vde.com",
"DATE_PUBLIC": "2021-10-25T14:00:00.000Z",
"ID": "CVE-2021-34596",
"STATE": "PUBLIC",
"TITLE": "CODESYS V2 runtime: Access of Uninitialized Pointer may result in denial-of-service"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "CODESYS V2 ",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_name": "Runtime Toolkit 32 bit full",
"version_value": "V2.4.7.56"
},
{
"version_affected": "\u003c",
"version_name": "PLCWinNT",
"version_value": "V2.4.7.56"
}
]
}
}
]
},
"vendor_name": "CODESYS"
}
]
}
},
"credit": [
{
"lang": "eng",
"value": "This issue was reported by Gao Jian of NSFOCUS."
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
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"lang": "eng",
"value": "A crafted request may cause a read access to an uninitialized pointer in CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56, resulting in a denial-of-service condition."
}
]
},
"generator": {
"engine": "Vulnogram 0.0.9"
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-824 Access of Uninitialized Pointer"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://customers.codesys.com/index.php?eID=dumpFile\u0026t=f\u0026f=16878\u0026token=e5644ec405590e66aefa62304cb8632df9fc9e9c\u0026download=",
"refsource": "CONFIRM",
"url": "https://customers.codesys.com/index.php?eID=dumpFile\u0026t=f\u0026f=16878\u0026token=e5644ec405590e66aefa62304cb8632df9fc9e9c\u0026download="
}
]
},
"solution": [
{
"lang": "eng",
"value": "CODESYS GmbH has released the following product versions to solve the noted vulnerability issue for the affected CODESYS products:\n * CODESYS Runtime Toolkit 32 bit full version V2.4.7.56\n * CODESYS PLCWinNT version V2.4.7.56. This will also be part of the CODESYS Development System setup version V2.3.9.68."
}
],
"source": {
"discovery": "EXTERNAL"
}
},
"nvd.nist.gov": {
"configurations": {
"CVE_data_version": "4.0",
"nodes": [
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:codesys:plcwinnt:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndExcluding": "2.4.7.56",
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:a:codesys:runtime_toolkit:*:*:*:*:*:*:x86:*",
"cpe_name": [],
"versionEndExcluding": "2.4.7.56",
"vulnerable": true
}
],
"operator": "OR"
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"ID": "CVE-2021-34596"
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "en",
"value": "A crafted request may cause a read access to an uninitialized pointer in CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56, resulting in a denial-of-service condition."
}
]
},
"problemtype": {
"problemtype_data": [
{
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{
"lang": "en",
"value": "CWE-824"
}
]
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},
"references": {
"reference_data": [
{
"name": "https://customers.codesys.com/index.php?eID=dumpFile\u0026t=f\u0026f=16878\u0026token=e5644ec405590e66aefa62304cb8632df9fc9e9c\u0026download=",
"refsource": "CONFIRM",
"tags": [
"Vendor Advisory"
],
"url": "https://customers.codesys.com/index.php?eID=dumpFile\u0026t=f\u0026f=16878\u0026token=e5644ec405590e66aefa62304cb8632df9fc9e9c\u0026download="
}
]
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},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "PARTIAL",
"baseScore": 4.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 3.6
}
},
"lastModifiedDate": "2021-11-04T15:29Z",
"publishedDate": "2021-10-26T10:15Z"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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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