CVE-2011-1331 (GCVE-0-2011-1331)
Vulnerability from cvelistv5 – Published: 2011-07-18 22:00 – Updated: 2024-08-06 22:21Summary
JustSystems Ichitaro 2005 through 2011, Ichitaro Government 6, Ichitaro Government 2006 through 2010, Ichitaro Portable, Ichitaro Pro, and Ichitaro Viewer allow remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via a crafted document, as exploited in the wild in early 2011.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
7 references
| URL | Tags |
|---|---|
| http://secunia.com/advisories/44956 | third-party-advisoryx_refsource_SECUNIA |
| http://www.securityfocus.com/bid/48283 | vdb-entryx_refsource_BID |
| http://jvndb.jvn.jp/jvndb/JVNDB-2011-000043 | third-party-advisoryx_refsource_JVNDB |
| https://exchange.xforce.ibmcloud.com/vulnerabilit… | vdb-entryx_refsource_XF |
| http://www.justsystems.com/jp/info/js11001.html | x_refsource_CONFIRM |
| http://www.symantec.com/connect/blogs/targeted-at… | x_refsource_MISC |
| http://jvn.jp/en/jp/JVN87239473/index.html | third-party-advisoryx_refsource_JVN |
Date Public
2011-06-16 00:00
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: df3a170e-77b2-41ec-a152-65684daa3dcf
Exploited: Yes
Timestamps
First Seen: 2011-07-18
Asserted: 2011-07-18
Scope
Notes: KEVIntel entry: JustSystems Ichitaro 2005 through 2011, Ichitaro Government 6, Ichitaro Government 2006 through 2010, Ichitaro Portable, Ichitaro Pro, and Ichitaro... | Affected: JustSystems / Ichitaro | CVSS: 9.3 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | JustSystems Ichitaro 2005 through 2011, Ichitaro Government 6, Ichitaro Government 2006 through 2010, Ichitaro Portable, Ichitaro Pro, and Ichitaro... |
| Vendor | JustSystems |
| Product | Ichitaro |
| Added Date | 2011-07-18T22:00:00.000Z |
| Cvss Score | 9.3 |
| Epss Score | None |
| Cvss Severity | HIGH |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | True |
References
Created: 2026-06-23 14:04 UTC
| Updated: 2026-07-10 06:14 UTC
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},
{
"criteria": "cpe:2.3:a:justsystems:ichitaro_viewer:*:*:*:*:*:*:*:*",
"matchCriteriaId": "6FB0BAF8-1958-4CA5-801F-BE36FA327726",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:justsystems:ichitaro_viewer:5.1.3.0:*:*:*:*:*:*:*",
"matchCriteriaId": "B34749C6-8E19-47B2-B5F7-0F98B122FCE1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:justsystems:ichitaro_viewer:19.0.1.0:*:*:*:*:*:*:*",
"matchCriteriaId": "7D726C33-139F-4514-BDFC-FE8F046B47CF",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:justsystems:ichitaro_viewer:19.0.2.0:*:*:*:*:*:*:*",
"matchCriteriaId": "FF6BBB43-6E50-4E6F-80A3-217A431D9A6A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:justsystems:ichitaro_viewer:19.0.3.0:*:*:*:*:*:*:*",
"matchCriteriaId": "6A008907-514E-4924-953C-3F09329CF26A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:justsystems:ichitaro_viewer:20.0.2.0:*:*:*:*:*:*:*",
"matchCriteriaId": "52CAFFC5-453F-49DD-8A71-8FB98C045A4C",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "JustSystems Ichitaro 2005 through 2011, Ichitaro Government 6, Ichitaro Government 2006 through 2010, Ichitaro Portable, Ichitaro Pro, and Ichitaro Viewer allow remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via a crafted document, as exploited in the wild in early 2011."
},
{
"lang": "es",
"value": "JustSystems Ichitaro v2005 hasta v2011, Ichitaro Government v6, Ichitaro Gobierno de v2006 a v2010, Ichitaro port\u00e1til, Ichitaro Pro, y el Visor de Ichitaro permite a atacantes remotos ejecutar c\u00f3digo arbitrario o causar una denegaci\u00f3n de servicio (corrupci\u00f3n de memoria heap ) a trav\u00e9s de un documento manipulado, como se exploto a principios de 2011."
}
],
"id": "CVE-2011-1331",
"lastModified": "2026-04-29T01:13:23.040",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 9.3,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 10.0,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": true
}
]
},
"published": "2011-07-18T22:55:01.033",
"references": [
{
"source": "vultures@jpcert.or.jp",
"url": "http://jvn.jp/en/jp/JVN87239473/index.html"
},
{
"source": "vultures@jpcert.or.jp",
"url": "http://jvndb.jvn.jp/jvndb/JVNDB-2011-000043"
},
{
"source": "vultures@jpcert.or.jp",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/44956"
},
{
"source": "vultures@jpcert.or.jp",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.justsystems.com/jp/info/js11001.html"
},
{
"source": "vultures@jpcert.or.jp",
"url": "http://www.securityfocus.com/bid/48283"
},
{
"source": "vultures@jpcert.or.jp",
"tags": [
"Exploit"
],
"url": "http://www.symantec.com/connect/blogs/targeted-attacks-2011-using-ichitaro-zero-day-vulnerability"
},
{
"source": "vultures@jpcert.or.jp",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/68072"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://jvn.jp/en/jp/JVN87239473/index.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://jvndb.jvn.jp/jvndb/JVNDB-2011-000043"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/44956"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "http://www.justsystems.com/jp/info/js11001.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/bid/48283"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit"
],
"url": "http://www.symantec.com/connect/blogs/targeted-attacks-2011-using-ichitaro-zero-day-vulnerability"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/68072"
}
],
"sourceIdentifier": "vultures@jpcert.or.jp",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-119"
}
],
"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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