CVE-2021-20833 (GCVE-0-2021-20833)
Vulnerability from cvelistv5 – Published: 2021-10-13 08:31 – Updated: 2024-08-03 17:53
VLAI
EPSS
VEX
Summary
The SNKRDUNK Market Place App for iOS versions prior to 2.2.0 does not verify server certificate properly, which allows man-in-the-middle attackers to eavesdrop on and/or alter encrypted communication via a crafted certificate.
Severity
7.4 (High)
CWE
- Improper server certificate verification
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://snkrdunk.com/information/37/ | x_refsource_MISC |
| https://jvn.jp/en/jp/JVN10168753/index.html | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| SODA, Inc. | SNKRDUNK Market Place App for iOS |
Affected:
versions prior to 2.2.0
|
guessed |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T17:53:22.674Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://snkrdunk.com/information/37/"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://jvn.jp/en/jp/JVN10168753/index.html"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "SNKRDUNK Market Place App for iOS",
"vendor": "SODA, Inc.",
"versions": [
{
"status": "affected",
"version": "versions prior to 2.2.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "The SNKRDUNK Market Place App for iOS versions prior to 2.2.0 does not verify server certificate properly, which allows man-in-the-middle attackers to eavesdrop on and/or alter encrypted communication via a crafted certificate."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "Improper server certificate verification",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2021-10-13T08:31:11.000Z",
"orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
"shortName": "jpcert"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://snkrdunk.com/information/37/"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://jvn.jp/en/jp/JVN10168753/index.html"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "vultures@jpcert.or.jp",
"ID": "CVE-2021-20833",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "SNKRDUNK Market Place App for iOS",
"version": {
"version_data": [
{
"version_value": "versions prior to 2.2.0"
}
]
}
}
]
},
"vendor_name": "SODA, Inc."
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "The SNKRDUNK Market Place App for iOS versions prior to 2.2.0 does not verify server certificate properly, which allows man-in-the-middle attackers to eavesdrop on and/or alter encrypted communication via a crafted certificate."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "Improper server certificate verification"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://snkrdunk.com/information/37/",
"refsource": "MISC",
"url": "https://snkrdunk.com/information/37/"
},
{
"name": "https://jvn.jp/en/jp/JVN10168753/index.html",
"refsource": "MISC",
"url": "https://jvn.jp/en/jp/JVN10168753/index.html"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
"assignerShortName": "jpcert",
"cveId": "CVE-2021-20833",
"datePublished": "2021-10-13T08:31:11.000Z",
"dateReserved": "2020-12-17T00:00:00.000Z",
"dateUpdated": "2024-08-03T17:53:22.674Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2021-20833",
"date": "2026-09-29",
"epss": "0.00486",
"percentile": "0.39411"
},
"fkie_nvd": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:soda-inc:snkrdunk:*:*:*:*:*:iphone_os:*:*",
"matchCriteriaId": "B76C5F85-3C3F-4C56-96AB-D256C3F224CA",
"versionEndExcluding": "2.2.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "The SNKRDUNK Market Place App for iOS versions prior to 2.2.0 does not verify server certificate properly, which allows man-in-the-middle attackers to eavesdrop on and/or alter encrypted communication via a crafted certificate."
},
{
"lang": "es",
"value": "SNKRDUNK Market Place App para iOS versiones anteriores a la 2.2.0, no verifica correctamente el certificado del servidor, que permite a atacantes de tipo man-in-the-middle espiar y/o alterar la comunicaci\u00f3n cifrada por medio de un certificado dise\u00f1ado"
}
],
"id": "CVE-2021-20833",
"lastModified": "2024-11-21T05:47:14.910",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.8,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 5.2,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-10-13T09:15:08.337",
"references": [
{
"source": "vultures@jpcert.or.jp",
"tags": [
"Third Party Advisory"
],
"url": "https://jvn.jp/en/jp/JVN10168753/index.html"
},
{
"source": "vultures@jpcert.or.jp",
"tags": [
"Mitigation",
"Vendor Advisory"
],
"url": "https://snkrdunk.com/information/37/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://jvn.jp/en/jp/JVN10168753/index.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mitigation",
"Vendor Advisory"
],
"url": "https://snkrdunk.com/information/37/"
}
],
"sourceIdentifier": "vultures@jpcert.or.jp",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-295"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"nvd": {
"cve": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:soda-inc:snkrdunk:*:*:*:*:*:iphone_os:*:*",
"matchCriteriaId": "B76C5F85-3C3F-4C56-96AB-D256C3F224CA",
"versionEndExcluding": "2.2.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The SNKRDUNK Market Place App for iOS versions prior to 2.2.0 does not verify server certificate properly, which allows man-in-the-middle attackers to eavesdrop on and/or alter encrypted communication via a crafted certificate."
},
{
"lang": "es",
"value": "SNKRDUNK Market Place App para iOS versiones anteriores a la 2.2.0, no verifica correctamente el certificado del servidor, que permite a atacantes de tipo man-in-the-middle espiar y/o alterar la comunicaci\u00f3n cifrada por medio de un certificado dise\u00f1ado"
}
],
"id": "CVE-2021-20833",
"lastModified": "2024-11-21T05:47:14.910",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.8,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 5.2,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-10-13T09:15:08.337",
"references": [
{
"source": "vultures@jpcert.or.jp",
"tags": [
"Third Party Advisory"
],
"url": "https://jvn.jp/en/jp/JVN10168753/index.html"
},
{
"source": "vultures@jpcert.or.jp",
"tags": [
"Mitigation",
"Vendor Advisory"
],
"url": "https://snkrdunk.com/information/37/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://jvn.jp/en/jp/JVN10168753/index.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mitigation",
"Vendor Advisory"
],
"url": "https://snkrdunk.com/information/37/"
}
],
"sourceIdentifier": "vultures@jpcert.or.jp",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-295"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-03-27T14:59:42+00:00",
"cve": "CVE-2021-20833",
"id": "CVE-2021-20833",
"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-2021-20833",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-20833.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…
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…