FKIE_CVE-2021-29978
Vulnerability from fkie_nvd - Published: 2021-08-05 20:15 - Updated: 2026-06-17 03:48
Severity
Summary
Multiple low security issues were discovered and fixed in a security audit of Mozilla VPN 2.x branch as part of a 3rd party security audit. This vulnerability affects Mozilla VPN < 2.3.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| mozilla | mozilla_vpn | * |
{
"affected": [
{
"affectedData": [
{
"product": "Mozilla VPN",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "2.3",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
],
"source": "security@mozilla.org"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:mozilla:mozilla_vpn:*:*:*:*:*:*:*:*",
"matchCriteriaId": "E9286282-AEFD-45D4-BE0A-1A9865A7E2E8",
"versionEndExcluding": "2.3",
"versionStartIncluding": "2.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Multiple low security issues were discovered and fixed in a security audit of Mozilla VPN 2.x branch as part of a 3rd party security audit. This vulnerability affects Mozilla VPN \u003c 2.3."
},
{
"lang": "es",
"value": "Multiples problemas de baja seguridad se detectaron y corrigieron en una auditor\u00eda de seguridad de la rama Mozilla VPN versi\u00f3n 2.x como parte de una auditor\u00eda de seguridad de terceros. Esta vulnerabilidad afecta a Mozilla VPN versiones anteriores a 2.3"
}
],
"id": "CVE-2021-29978",
"lastModified": "2026-06-17T03:48:32.737",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 10.0,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"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": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-08-05T20:15:08.857",
"references": [
{
"source": "security@mozilla.org",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/797"
},
{
"source": "security@mozilla.org",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/798"
},
{
"source": "security@mozilla.org",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/799"
},
{
"source": "security@mozilla.org",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/800"
},
{
"source": "security@mozilla.org",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/801"
},
{
"source": "security@mozilla.org",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/803"
},
{
"source": "security@mozilla.org",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/804"
},
{
"source": "security@mozilla.org",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/805"
},
{
"source": "security@mozilla.org",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/806"
},
{
"source": "security@mozilla.org",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/808"
},
{
"source": "security@mozilla.org",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/809"
},
{
"source": "security@mozilla.org",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/810"
},
{
"source": "security@mozilla.org",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/812"
},
{
"source": "security@mozilla.org",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/pull/816"
},
{
"source": "security@mozilla.org",
"tags": [
"Vendor Advisory"
],
"url": "https://www.mozilla.org/security/advisories/mfsa2021-31/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/797"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/798"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/799"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/800"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/801"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/803"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/804"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/805"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/806"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/808"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/809"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/810"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/issues/812"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://github.com/mozilla-mobile/mozilla-vpn-client/pull/816"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://www.mozilla.org/security/advisories/mfsa2021-31/"
}
],
"sourceIdentifier": "security@mozilla.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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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