gsd-2021-34600
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
Telenot CompasX versions prior to 32.0 use a weak seed for random number generation leading to predictable AES keys used in the NFC tags used for local authorization of users. This may lead to total loss of trustworthiness of the installation.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-34600",
"description": "Telenot CompasX versions prior to 32.0 use a weak seed for random number generation leading to predictable AES keys used in the NFC tags used for authorization of users.",
"id": "GSD-2021-34600"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2021-34600"
],
"details": "Telenot CompasX versions prior to 32.0 use a weak seed for random number generation leading to predictable AES keys used in the NFC tags used for local authorization of users. This may lead to total loss of trustworthiness of the installation.\n\n",
"id": "GSD-2021-34600",
"modified": "2023-12-13T01:23:14.350843Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "info@cert.vde.com",
"ID": "CVE-2021-34600",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "CompasX",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_name": "unspecified",
"version_value": "32.0"
}
]
}
}
]
},
"vendor_name": "Telenot Electronic GmbH"
}
]
}
},
"credits": [
{
"lang": "en",
"value": "X41 D-SEC GmbH, Markus Vervier, Yasar Klawohn"
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Telenot CompasX versions prior to 32.0 use a weak seed for random number generation leading to predictable AES keys used in the NFC tags used for local authorization of users. This may lead to total loss of trustworthiness of the installation.\n\n"
}
]
},
"generator": {
"engine": "Vulnogram 0.0.9"
},
"impact": {
"cvss": [
{
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"cweId": "CWE-335",
"lang": "eng",
"value": "CWE-335 Incorrect Usage of Seeds in Pseudo-Random Number Generator (PRNG)"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://www.x41-dsec.de/lab/advisories/x41-2021-003-telenot-complex-insecure-keygen/",
"refsource": "MISC",
"url": "https://www.x41-dsec.de/lab/advisories/x41-2021-003-telenot-complex-insecure-keygen/"
}
]
},
"solution": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eUpdate to CompasX versions \u0026gt;= 32.0\u003c/p\u003e"
}
],
"value": "Update to CompasX versions \u003e= 32.0\n\n"
}
],
"source": {
"defect": [
"CERT@VDE#64025"
],
"discovery": "EXTERNAL"
},
"work_around": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eIt is strongly recommended to raise the security level during the time window until the AES keys can be changed to securely generated ones. The complex alarm systems supports alternative authentication factors that can be combined with the Desfire NFC tag authentication. An example for such an additional factor is a requirement for a valid PIN entry on the complex alarm system in addition to a successful Desfire authentication to disarm the alarm.\u003c/p\u003e"
}
],
"value": "It is strongly recommended to raise the security level during the time window until the AES keys can be changed to securely generated ones. The complex alarm systems supports alternative authentication factors that can be combined with the Desfire NFC tag authentication. An example for such an additional factor is a requirement for a valid PIN entry on the complex alarm system in addition to a successful Desfire authentication to disarm the alarm.\n\n"
}
]
},
"nvd.nist.gov": {
"configurations": {
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"nodes": [
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:telenot:compasx:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndExcluding": "32.0",
"vulnerable": true
}
],
"operator": "OR"
}
]
},
"cve": {
"CVE_data_meta": {
"ASSIGNER": "info@cert.vde.com",
"ID": "CVE-2021-34600"
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "en",
"value": "Telenot CompasX versions prior to 32.0 use a weak seed for random number generation leading to predictable AES keys used in the NFC tags used for local authorization of users. This may lead to total loss of trustworthiness of the installation.\n\n"
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "en",
"value": "CWE-335"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://www.x41-dsec.de/lab/advisories/x41-2021-003-telenot-complex-insecure-keygen/",
"refsource": "CONFIRM",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://www.x41-dsec.de/lab/advisories/x41-2021-003-telenot-complex-insecure-keygen/"
}
]
}
},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 4.9,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "NONE",
"vectorString": "AV:L/AC:L/Au:N/C:C/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6
}
},
"lastModifiedDate": "2023-08-09T11:15Z",
"publishedDate": "2022-01-20T12:15Z"
}
}
}
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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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