CVE-2021-20122 (GCVE-0-2021-20122)
Vulnerability from cvelistv5 – Published: 2021-10-11 16:48 – Updated: 2024-08-03 17:30
VLAI
EPSS
VEX
Summary
The Telus Wi-Fi Hub (PRV65B444A-S-TS) with firmware version 3.00.20 is affected by an authenticated command injection vulnerability in multiple parameters passed to tr69_cmd.cgi. A remote attacker connected to the router's LAN and authenticated with a super user account, or using a bypass authentication vulnerability like CVE-2021-20090 could leverage this issue to run commands or gain a shell as root on the target device.
Severity
7.2 (High)
CWE
- Command Injection
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.tenable.com/security/research/tra-2021-41 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| n/a | Telus Wi-Fi Hub (PRV65B444A-S-TS) |
Affected:
3.00.20
|
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T17:30:07.433Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://www.tenable.com/security/research/tra-2021-41"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "Telus Wi-Fi Hub (PRV65B444A-S-TS)",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "3.00.20"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "The Telus Wi-Fi Hub (PRV65B444A-S-TS) with firmware version 3.00.20 is affected by an authenticated command injection vulnerability in multiple parameters passed to tr69_cmd.cgi. A remote attacker connected to the router\u0027s LAN and authenticated with a super user account, or using a bypass authentication vulnerability like CVE-2021-20090 could leverage this issue to run commands or gain a shell as root on the target device."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "Command Injection",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2021-10-11T16:48:59.000Z",
"orgId": "5ac1ecc2-367a-4d16-a0b2-35d495ddd0be",
"shortName": "tenable"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://www.tenable.com/security/research/tra-2021-41"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "vulnreport@tenable.com",
"ID": "CVE-2021-20122",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Telus Wi-Fi Hub (PRV65B444A-S-TS)",
"version": {
"version_data": [
{
"version_value": "3.00.20"
}
]
}
}
]
},
"vendor_name": "n/a"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "The Telus Wi-Fi Hub (PRV65B444A-S-TS) with firmware version 3.00.20 is affected by an authenticated command injection vulnerability in multiple parameters passed to tr69_cmd.cgi. A remote attacker connected to the router\u0027s LAN and authenticated with a super user account, or using a bypass authentication vulnerability like CVE-2021-20090 could leverage this issue to run commands or gain a shell as root on the target device."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "Command Injection"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://www.tenable.com/security/research/tra-2021-41",
"refsource": "MISC",
"url": "https://www.tenable.com/security/research/tra-2021-41"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "5ac1ecc2-367a-4d16-a0b2-35d495ddd0be",
"assignerShortName": "tenable",
"cveId": "CVE-2021-20122",
"datePublished": "2021-10-11T16:48:59.000Z",
"dateReserved": "2020-12-17T00:00:00.000Z",
"dateUpdated": "2024-08-03T17:30:07.433Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2021-20122",
"date": "2026-09-20",
"epss": "0.06529",
"percentile": "0.93475"
},
"nvd": {
"cve": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:telus:prv65b444a-s-ts_firmware:3.00.20:*:*:*:*:*:*:*",
"matchCriteriaId": "80DB4F46-06BC-438F-A685-C4C1A2ACA69B",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:telus:prv65b444a-s-ts:-:*:*:*:*:*:*:*",
"matchCriteriaId": "0BE94241-E1DE-41E0-B9F3-E479A181A743",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The Telus Wi-Fi Hub (PRV65B444A-S-TS) with firmware version 3.00.20 is affected by an authenticated command injection vulnerability in multiple parameters passed to tr69_cmd.cgi. A remote attacker connected to the router\u0027s LAN and authenticated with a super user account, or using a bypass authentication vulnerability like CVE-2021-20090 could leverage this issue to run commands or gain a shell as root on the target device."
},
{
"lang": "es",
"value": "Telus Wi-Fi Hub (PRV65B444A-S-TS) con la versi\u00f3n de firmware 3.00.20, est\u00e1 afectado por una vulnerabilidad de inyecci\u00f3n de comandos autenticados en m\u00faltiples par\u00e1metros pasados al archivo tr69_cmd.cgi. Un atacante remoto conectado a la LAN del router y autenticado con una cuenta de superusuario, o usando una vulnerabilidad de omisi\u00f3n autenticaci\u00f3n como CVE-2021-20090 podr\u00eda aprovechar este problema para ejecutar comandos y conseguir un shell como root en el dispositivo de destino"
}
],
"id": "CVE-2021-20122",
"lastModified": "2024-11-21T05:45:57.890",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "COMPLETE",
"baseScore": 9.0,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 8.0,
"impactScore": 10.0,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.2,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-10-11T17:15:07.497",
"references": [
{
"source": "vulnreport@tenable.com",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://www.tenable.com/security/research/tra-2021-41"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://www.tenable.com/security/research/tra-2021-41"
}
],
"sourceIdentifier": "vulnreport@tenable.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-78"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-03-27T15:03:39+00:00",
"cve": "CVE-2021-20122",
"id": "CVE-2021-20122",
"initial_release_date": "2021-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "CVE-2021-20122",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-20122.json",
"version": "3"
}
}
}
Loading…
Loading…
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.
Loading…
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.
Loading…
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.
Loading…