CVE-2013-0340 (GCVE-0-2013-0340)
Vulnerability from cvelistv5 – Published: 2014-01-21 18:00 – Updated: 2025-11-25 16:27
VLAI
EPSS
VEX
Summary
expat before version 2.4.0 does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because expat already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed, and each affected application would need its own CVE.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
25 references
Date Public
2013-02-21 00:00
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},
{
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],
"url": "http://seclists.org/fulldisclosure/2021/Sep/40"
},
{
"source": "secalert@redhat.com",
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},
{
"source": "secalert@redhat.com",
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],
"url": "http://www.openwall.com/lists/oss-security/2013/04/12/6"
},
{
"source": "secalert@redhat.com",
"tags": [
"Mailing List",
"Third Party Advisory"
],
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},
{
"source": "secalert@redhat.com",
"tags": [
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],
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},
{
"source": "secalert@redhat.com",
"tags": [
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"Third Party Advisory",
"VDB Entry"
],
"url": "http://www.securityfocus.com/bid/58233"
},
{
"source": "secalert@redhat.com",
"url": "https://github.com/libexpat/libexpat/blob/R_2_4_1/expat/Changes"
},
{
"source": "secalert@redhat.com",
"url": "https://lists.apache.org/thread.html/r41eca5f4f09e74436cbb05dec450fc2bef37b5d3e966aa7cc5fada6d%40%3Cannounce.apache.org%3E"
},
{
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},
{
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],
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},
{
"source": "secalert@redhat.com",
"tags": [
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],
"url": "https://support.apple.com/kb/HT212804"
},
{
"source": "secalert@redhat.com",
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],
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},
{
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],
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},
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],
"url": "https://support.apple.com/kb/HT212814"
},
{
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],
"url": "https://support.apple.com/kb/HT212815"
},
{
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"tags": [
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],
"url": "https://support.apple.com/kb/HT212819"
},
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"tags": [
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],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-611"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-12-09T09:11:01+00:00",
"cve": "CVE-2013-0340",
"id": "CVE-2013-0340",
"initial_release_date": "2013-02-19T00:00:00+00:00",
"product_status:fixed": "93",
"product_status:known_affected": "8",
"product_status:known_not_affected": "100",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "expat: internal entity expansion",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2013/cve-2013-0340.json",
"version": "3"
}
}
}
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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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