FKIE_CVE-2011-0420
Vulnerability from fkie_nvd - Published: 2011-02-19 01:00 - Updated: 2026-06-16 23:27
Severity
Summary
The grapheme_extract function in the Internationalization extension (Intl) for ICU for PHP 5.3.5 allows context-dependent attackers to cause a denial of service (crash) via an invalid size argument, which triggers a NULL pointer dereference.
References
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "cret@cert.org"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:php:php:5.3.5:*:*:*:*:*:*:*",
"matchCriteriaId": "A9E6D530-91FC-42F4-A427-6601238E0187",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The grapheme_extract function in the Internationalization extension (Intl) for ICU for PHP 5.3.5 allows context-dependent attackers to cause a denial of service (crash) via an invalid size argument, which triggers a NULL pointer dereference."
},
{
"lang": "es",
"value": "La funci\u00f3n grapheme_extract en la extensi\u00f3n de Internacionalizaci\u00f3n (Intl) para ICU para PHP v5.3.5 permite provocar una denegaci\u00f3n de servicio (con ca\u00edda de la aplicaci\u00f3n) a atacantes dependientes del contexto a trav\u00e9s de un argumento de tama\u00f1o no v\u00e1lido, lo que provoca una desreferencia de puntero NULL."
}
],
"evaluatorComment": "Per: http://cwe.mitre.org/data/definitions/476.html\r\n\u0027CWE-476: NULL Pointer Dereference\u0027",
"id": "CVE-2011-0420",
"lastModified": "2026-06-16T23:27:19.550",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2011-02-19T01:00:02.933",
"references": [
{
"source": "cret@cert.org",
"url": "http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html"
},
{
"source": "cret@cert.org",
"tags": [
"Exploit"
],
"url": "http://securityreason.com/achievement_securityalert/94"
},
{
"source": "cret@cert.org",
"url": "http://securityreason.com/securityalert/8087"
},
{
"source": "cret@cert.org",
"url": "http://support.apple.com/kb/HT5002"
},
{
"source": "cret@cert.org",
"tags": [
"Patch"
],
"url": "http://svn.php.net/viewvc/php/php-src/trunk/ext/intl/grapheme/grapheme_string.c?r1=306449\u0026r2=306448\u0026pathrev=306449"
},
{
"source": "cret@cert.org",
"url": "http://www.debian.org/security/2011/dsa-2266"
},
{
"source": "cret@cert.org",
"url": "http://www.exploit-db.com/exploits/16182"
},
{
"source": "cret@cert.org",
"tags": [
"US Government Resource"
],
"url": "http://www.kb.cert.org/vuls/id/210829"
},
{
"source": "cret@cert.org",
"url": "http://www.securityfocus.com/archive/1/516504/100/0/threaded"
},
{
"source": "cret@cert.org",
"url": "http://www.securityfocus.com/archive/1/516518/100/0/threaded"
},
{
"source": "cret@cert.org",
"tags": [
"Exploit"
],
"url": "http://www.securityfocus.com/bid/46429"
},
{
"source": "cret@cert.org",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/65437"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit"
],
"url": "http://securityreason.com/achievement_securityalert/94"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://securityreason.com/securityalert/8087"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://support.apple.com/kb/HT5002"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "http://svn.php.net/viewvc/php/php-src/trunk/ext/intl/grapheme/grapheme_string.c?r1=306449\u0026r2=306448\u0026pathrev=306449"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.debian.org/security/2011/dsa-2266"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.exploit-db.com/exploits/16182"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"US Government Resource"
],
"url": "http://www.kb.cert.org/vuls/id/210829"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/archive/1/516504/100/0/threaded"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/archive/1/516518/100/0/threaded"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit"
],
"url": "http://www.securityfocus.com/bid/46429"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/65437"
}
],
"sourceIdentifier": "cret@cert.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-Other"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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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