Vulnerability-Lookup

CNVD-2020-04120

Vulnerability from cnvd - Published: 2020-02-07

Title

ezXML无限循环漏洞

Description

ezXML是一个用于解析XML文档的C库。 ezXML存在无限循环漏洞。该漏洞源于ezxml_parse_*函数不能正确处理XML实体。攻击者可通过恶意XML文件利用该漏洞导致拒绝服务。

Severity

中

Formal description

厂商尚未提供漏洞修复方案，请关注厂商主页更新： http://ezxml.sourceforge.net/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2019-20201

Impacted products

Name
ezXML ezXML >=0.8.3，<=0.8.6

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-20201",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2019-20201"
    }
  },
  "description": "ezXML\u662f\u4e00\u4e2a\u7528\u4e8e\u89e3\u6790XML\u6587\u6863\u7684C\u5e93\u3002\n\nezXML\u5b58\u5728\u65e0\u9650\u5faa\u73af\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8eezxml_parse_*\u51fd\u6570\u4e0d\u80fd\u6b63\u786e\u5904\u7406XML\u5b9e\u4f53\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u6076\u610fXML\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u5382\u5546\u5c1a\u672a\u63d0\u4f9b\u6f0f\u6d1e\u4fee\u590d\u65b9\u6848\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u66f4\u65b0\uff1a\r\nhttp://ezxml.sourceforge.net/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-04120",
  "openTime": "2020-02-07",
  "products": {
    "product": "ezXML ezXML \u003e=0.8.3\uff0c\u003c=0.8.6"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2019-20201",
  "serverity": "\u4e2d",
  "submitTime": "2020-01-02",
  "title": "ezXML\u65e0\u9650\u5faa\u73af\u6f0f\u6d1e"
}

CVE-2019-20201 (GCVE-0-2019-20201)

Vulnerability from cvelistv5 – Published: 2019-12-31 20:30 – Updated: 2024-08-05 02:39

Summary

An issue was discovered in ezXML 0.8.3 through 0.8.6. The ezxml_parse_* functions mishandle XML entities, leading to an infinite loop in which memory allocations occur.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://sourceforge.net/p/ezxml/bugs/16/	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

{
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      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T02:39:09.518Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://sourceforge.net/p/ezxml/bugs/16/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
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          "lang": "en",
          "value": "An issue was discovered in ezXML 0.8.3 through 0.8.6. The ezxml_parse_* functions mishandle XML entities, leading to an infinite loop in which memory allocations occur."
        }
      ],
      "problemTypes": [
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          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2019-12-31T20:30:33.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://sourceforge.net/p/ezxml/bugs/16/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2019-20201",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
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          }
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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            }
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        },
        "problemtype": {
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        },
        "references": {
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              "refsource": "MISC",
              "url": "https://sourceforge.net/p/ezxml/bugs/16/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2019-20201",
    "datePublished": "2019-12-31T20:30:33.000Z",
    "dateReserved": "2019-12-31T00:00:00.000Z",
    "dateUpdated": "2024-08-05T02:39:09.518Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Detection rules are retrieved from Rulezet.

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.