fkie_cve-2021-23986
Vulnerability from fkie_nvd
Published
2021-03-31 14:15
Modified
2024-11-21 05:52
Severity ?
Summary
A malicious extension with the 'search' permission could have installed a new search engine whose favicon referenced a cross-origin URL. The response to this cross-origin request could have been read by the extension, allowing a same-origin policy bypass by the extension, which should not have cross-origin permissions. This cross-origin request was made without cookies, so the sensitive information disclosed by the violation was limited to local-network resources or resources that perform IP-based authentication. This vulnerability affects Firefox < 87.
References
| ▶ | URL | Tags | |
|---|---|---|---|
| security@mozilla.org | https://bugzilla.mozilla.org/show_bug.cgi?id=1692623 | Issue Tracking, Permissions Required, Vendor Advisory | |
| security@mozilla.org | https://www.mozilla.org/security/advisories/mfsa2021-10/ | Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://bugzilla.mozilla.org/show_bug.cgi?id=1692623 | Issue Tracking, Permissions Required, Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://www.mozilla.org/security/advisories/mfsa2021-10/ | Vendor Advisory |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*",
"matchCriteriaId": "3533FF74-0FD6-447B-9C37-D491D18EA529",
"versionEndExcluding": "87.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A malicious extension with the \u0027search\u0027 permission could have installed a new search engine whose favicon referenced a cross-origin URL. The response to this cross-origin request could have been read by the extension, allowing a same-origin policy bypass by the extension, which should not have cross-origin permissions. This cross-origin request was made without cookies, so the sensitive information disclosed by the violation was limited to local-network resources or resources that perform IP-based authentication. This vulnerability affects Firefox \u003c 87."
},
{
"lang": "es",
"value": "Una extensi\u00f3n maliciosa con el permiso de \"search\" podr\u00eda haber instalado un nuevo motor de b\u00fasqueda cuyo favicon hiciera referencia a una URL de origen cruzado.\u0026#xa0;La respuesta a esta petici\u00f3n de origen cruzado podr\u00eda haber sido le\u00edda por la extensi\u00f3n, permitiendo a la extensi\u00f3n omitir la pol\u00edtica del mismo origen, que no deber\u00eda tener permisos de origen cruzado.\u0026#xa0;Esta petici\u00f3n de origen cruzado fue hecha sin cookies, por lo que la informaci\u00f3n confidencial divulgada por la infracci\u00f3n se limit\u00f3 a los recursos de la red local o los recursos que llevan a cabo la autenticaci\u00f3n basada en IP.\u0026#xa0;Esta vulnerabilidad afecta a Firefox versiones anteriores a 87."
}
],
"id": "CVE-2021-23986",
"lastModified": "2024-11-21T05:52:09.577",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": true
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-03-31T14:15:19.343",
"references": [
{
"source": "security@mozilla.org",
"tags": [
"Issue Tracking",
"Permissions Required",
"Vendor Advisory"
],
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1692623"
},
{
"source": "security@mozilla.org",
"tags": [
"Vendor Advisory"
],
"url": "https://www.mozilla.org/security/advisories/mfsa2021-10/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Issue Tracking",
"Permissions Required",
"Vendor Advisory"
],
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1692623"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://www.mozilla.org/security/advisories/mfsa2021-10/"
}
],
"sourceIdentifier": "security@mozilla.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-346"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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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