Vulnerability-Lookup

GHSA-W3V2-46WF-PQ33

Vulnerability from github – Published: 2022-05-05 02:48 – Updated: 2025-11-25 18:32

Details

expat 2.1.0 and earlier 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.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2013-0340"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2014-01-21T18:55:00Z",
    "severity": "MODERATE"
  },
  "details": "expat 2.1.0 and earlier 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.",
  "id": "GHSA-w3v2-46wf-pq33",
  "modified": "2025-11-25T18:32:00Z",
  "published": "2022-05-05T02:48:51Z",
  "references": [
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      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2013-0340"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libexpat/libexpat/blob/R_2_4_1/expat/Changes"
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      "url": "https://lists.apache.org/thread.html/r41eca5f4f09e74436cbb05dec450fc2bef37b5d3e966aa7cc5fada6d%40%3Cannounce.apache.org%3E"
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}

CVE-2013-0340 (GCVE-0-2013-0340)

Vulnerability from cvelistv5 – Published: 2014-01-21 18:00 – Updated: 2025-11-25 16:27

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

Assigner

redhat redhat root

References

25 references

URL	Tags
http://openwall.com/lists/oss-security/2013/02/22/3	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2013/04/12/6	mailing-listx_refsource_MLIST
http://www.osvdb.org/90634	vdb-entryx_refsource_OSVDB
http://securitytracker.com/id?1028213	vdb-entryx_refsource_SECTRACK
https://security.gentoo.org/glsa/201701-21	vendor-advisoryx_refsource_GENTOO
http://www.securityfocus.com/bid/58233	vdb-entryx_refsource_BID
https://support.apple.com/kb/HT212805	x_refsource_CONFIRM
https://support.apple.com/kb/HT212804	x_refsource_CONFIRM
https://support.apple.com/kb/HT212807	x_refsource_CONFIRM
https://support.apple.com/kb/HT212819	x_refsource_CONFIRM
https://support.apple.com/kb/HT212814	x_refsource_CONFIRM
https://support.apple.com/kb/HT212815	x_refsource_CONFIRM
http://seclists.org/fulldisclosure/2021/Sep/33	mailing-listx_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Sep/34	mailing-listx_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Sep/40	mailing-listx_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Sep/35	mailing-listx_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Sep/38	mailing-listx_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Sep/39	mailing-listx_refsource_FULLDISC
https://lists.apache.org/thread.html/r41eca5f4f09…	mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rfb2c1933604…	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/10/07/4	mailing-listx_refsource_MLIST
http://seclists.org/fulldisclosure/2021/Oct/62	mailing-listx_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Oct/63	mailing-listx_refsource_FULLDISC
http://seclists.org/fulldisclosure/2021/Oct/61	mailing-listx_refsource_FULLDISC
https://github.com/libexpat/libexpat/blob/R_2_4_1…

Impacted products

1 product

Vendor	Product	Version
		Affected: 0 , < 2.4.0 (semver)

Date Public

2013-02-21 00:00

Show details on NVD website

JSON

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            "x_refsource_FULLDISC"
          ],
          "url": "http://seclists.org/fulldisclosure/2021/Oct/61"
        },
        {
          "name": "Expat 2.4.0 and 2.4.1 Changelog",
          "url": "https://github.com/libexpat/libexpat/blob/R_2_4_1/expat/Changes"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2013-0340",
    "datePublished": "2014-01-21T18:00:00.000Z",
    "dateReserved": "2012-12-06T00:00:00.000Z",
    "dateUpdated": "2025-11-25T16:27:56.273Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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.

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.

Action not permitted

GHSA-W3V2-46WF-PQ33

CVE-2013-0340 (GCVE-0-2013-0340)

Tags

Sightings

Nomenclature

Related by attack behaviour