Vulnerability-Lookup

CNVD-2021-95143

Vulnerability from cnvd - Published: 2021-12-07

Title

LibreDWG缓冲区溢出漏洞

Description

Libredwg是美国Free Software Foundation基金会的一个免费的C 库。用于读写 Dwg 文件。 LibreDWG存在缓冲区溢出漏洞，该漏洞源于在LibreDWG v0.12.3 版本的 out_dxfb.c中包含一个 NULL 指针取消引用。目前没有详细的漏洞细节提供。

Severity

中

Patch Name

LibreDWG缓冲区溢出漏洞的补丁

Patch Description

Libredwg是美国Free Software Foundation基金会的一个免费的C 库。用于读写 Dwg 文件。 LibreDWG存在缓冲区溢出漏洞，该漏洞源于在LibreDWG v0.12.3 版本的 out_dxfb.c中包含一个 NULL 指针取消引用。目前没有详细的漏洞细节提供。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://github.com/LibreDWG/libredwg/issues/324

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-28236

Impacted products

Name
GNU LibreDWG 0.12.3

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-28236"
    }
  },
  "description": "Libredwg\u662f\u7f8e\u56fdFree Software Foundation\u57fa\u91d1\u4f1a\u7684\u4e00\u4e2a\u514d\u8d39\u7684C \u5e93\u3002\u7528\u4e8e\u8bfb\u5199 Dwg \u6587\u4ef6\u3002\n\nLibreDWG\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728LibreDWG v0.12.3 \u7248\u672c\u7684 out_dxfb.c\u4e2d\u5305\u542b\u4e00\u4e2a NULL \u6307\u9488\u53d6\u6d88\u5f15\u7528\u3002 \u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://github.com/LibreDWG/libredwg/issues/324",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-95143",
  "openTime": "2021-12-07",
  "patchDescription": "Libredwg\u662f\u7f8e\u56fdFree Software Foundation\u57fa\u91d1\u4f1a\u7684\u4e00\u4e2a\u514d\u8d39\u7684C \u5e93\u3002\u7528\u4e8e\u8bfb\u5199 Dwg \u6587\u4ef6\u3002\r\n\r\nLibreDWG\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728LibreDWG v0.12.3 \u7248\u672c\u7684 out_dxfb.c\u4e2d\u5305\u542b\u4e00\u4e2a NULL \u6307\u9488\u53d6\u6d88\u5f15\u7528\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "LibreDWG\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "GNU LibreDWG 0.12.3"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-28236",
  "serverity": "\u4e2d",
  "submitTime": "2021-12-06",
  "title": "LibreDWG\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2021-28236 (GCVE-0-2021-28236)

Vulnerability from cvelistv5 – Published: 2021-12-02 21:47 – Updated: 2024-08-03 21:40

Summary

LibreDWG v0.12.3 was discovered to contain a NULL pointer dereference via out_dxfb.c.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/LibreDWG/libredwg/issues/324	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-03T21:40:12.968Z",
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              "x_transferred"
            ],
            "url": "https://github.com/LibreDWG/libredwg/issues/324"
          }
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      }
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      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/LibreDWG/libredwg/issues/324"
        }
      ],
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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.