FKIE_CVE-2012-4203
Vulnerability from fkie_nvd - Published: 2012-11-21 12:55 - Updated: 2026-06-16 23:44
Severity
Summary
The New Tab page in Mozilla Firefox before 17.0 uses a privileged context for execution of JavaScript code by bookmarklets, which allows user-assisted remote attackers to run arbitrary programs by leveraging a javascript: URL in a bookmark.
References
Impacted products
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"source": "cve@mitre.org"
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],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The New Tab page in Mozilla Firefox before 17.0 uses a privileged context for execution of JavaScript code by bookmarklets, which allows user-assisted remote attackers to run arbitrary programs by leveraging a javascript: URL in a bookmark."
},
{
"lang": "es",
"value": "P\u00e1gina en nueva pesta\u00f1a en Mozilla Firefox antes de v17.0, utiliza un contexto con privilegios elevados para la ejecuci\u00f3n de c\u00f3digo javascript de bookmarklets, lo que permite a atacantes remotos asistidos por el usuario ejecutar programas arbitrarios mediante el aprovechamiento de una javascript: URL de un marcador."
}
],
"id": "CVE-2012-4203",
"lastModified": "2026-06-16T23:44:36.227",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 6.8,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": true
}
]
},
"published": "2012-11-21T12:55:01.680",
"references": [
{
"source": "cve@mitre.org",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00021.html"
},
{
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"url": "http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00022.html"
},
{
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"url": "http://lists.opensuse.org/opensuse-updates/2012-11/msg00090.html"
},
{
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"url": "http://lists.opensuse.org/opensuse-updates/2012-11/msg00093.html"
},
{
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"url": "http://secunia.com/advisories/51369"
},
{
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"url": "http://secunia.com/advisories/51434"
},
{
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},
{
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"tags": [
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],
"url": "http://www.mozilla.org/security/announce/2012/mfsa2012-95.html"
},
{
"source": "cve@mitre.org",
"url": "http://www.securityfocus.com/bid/56623"
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{
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{
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{
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"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=765628"
},
{
"source": "cve@mitre.org",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16503"
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"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.ubuntu.com/usn/USN-1638-1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.ubuntu.com/usn/USN-1638-2"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.ubuntu.com/usn/USN-1638-3"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=765628"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16503"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-264"
}
],
"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.
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.
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