Vulnerability-Lookup

CNVD-2021-16361

Vulnerability from cnvd - Published: 2021-03-10

Title

CGAL libcgal越界读取漏洞（CNVD-2021-16361）

Description

Libcgal是一个提供几何算法以进行快速可靠的数据处理的开源C++库。 CGAL libcgal CGAL-5.1.1中的Nef_S2/SNC_io_parser.h SNC_io_parser::read_sface() sfh->volume()存在越界读取漏洞，攻击者可通过提供恶意输入利用该漏洞实现代码执行。

Severity

中

Patch Name

CGAL libcgal越界读取漏洞（CNVD-2021-16361）的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/CGAL/cgal

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-35636

Impacted products

Name
CGAL libcgal CGAL-5.1.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-35636",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-35636"
    }
  },
  "description": "Libcgal\u662f\u4e00\u4e2a\u63d0\u4f9b\u51e0\u4f55\u7b97\u6cd5\u4ee5\u8fdb\u884c\u5feb\u901f\u53ef\u9760\u7684\u6570\u636e\u5904\u7406\u7684\u5f00\u6e90C++\u5e93\u3002\n\nCGAL libcgal CGAL-5.1.1\u4e2d\u7684Nef_S2/SNC_io_parser.h SNC_io_parser::read_sface() sfh-\u003evolume()\u5b58\u5728\u8d8a\u754c\u8bfb\u53d6\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u63d0\u4f9b\u6076\u610f\u8f93\u5165\u5229\u7528\u8be5\u6f0f\u6d1e\u5b9e\u73b0\u4ee3\u7801\u6267\u884c\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/CGAL/cgal",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-16361",
  "openTime": "2021-03-10",
  "patchDescription": "Libcgal\u662f\u4e00\u4e2a\u63d0\u4f9b\u51e0\u4f55\u7b97\u6cd5\u4ee5\u8fdb\u884c\u5feb\u901f\u53ef\u9760\u7684\u6570\u636e\u5904\u7406\u7684\u5f00\u6e90C++\u5e93\u3002\r\n\r\nCGAL libcgal CGAL-5.1.1\u4e2d\u7684Nef_S2/SNC_io_parser.h SNC_io_parser::read_sface() sfh-\u003evolume()\u5b58\u5728\u8d8a\u754c\u8bfb\u53d6\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u63d0\u4f9b\u6076\u610f\u8f93\u5165\u5229\u7528\u8be5\u6f0f\u6d1e\u5b9e\u73b0\u4ee3\u7801\u6267\u884c\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": "CGAL libcgal\u8d8a\u754c\u8bfb\u53d6\u6f0f\u6d1e\uff08CNVD-2021-16361\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "CGAL libcgal CGAL-5.1.1"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-35636",
  "serverity": "\u4e2d",
  "submitTime": "2021-03-05",
  "title": "CGAL libcgal\u8d8a\u754c\u8bfb\u53d6\u6f0f\u6d1e\uff08CNVD-2021-16361\uff09"
}

CVE-2020-35636 (GCVE-0-2020-35636)

Vulnerability from cvelistv5 – Published: 2021-03-04 00:00 – Updated: 2025-04-23 19:44

Summary

A code execution vulnerability exists in the Nef polygon-parsing functionality of CGAL libcgal CGAL-5.1.1 in Nef_S2/SNC_io_parser.h SNC_io_parser::read_sface() sfh->volume() OOB read. A specially crafted malformed file can lead to an out-of-bounds read and type confusion, which could lead to code execution. An attacker can provide malicious input to trigger this vulnerability.

Severity

10 (Critical)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-23 13:12 UTC

CWE

CWE-129 - Improper Validation of Array Index

Assigner

talos mitre root

References

3 references

URL	Tags
https://talosintelligence.com/vulnerability_repor…
https://lists.debian.org/debian-lts-announce/2022…	mailing-list
https://security.gentoo.org/glsa/202305-34	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
n/a	CGAL Project	Affected: CGAL Project libcgal CGAL-5.1.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T17:09:14.629Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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        "references": [
          {
            "tags": [
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            ],
            "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2020-1225"
          },
          {
            "name": "[debian-lts-announce] 20221206 [SECURITY] [DLA 3226-1] cgal security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00011.html"
          },
          {
            "name": "GLSA-202305-34",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202305-34"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2020-35636",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-23T13:12:24.434301Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-23T19:44:35.825Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
      "affected": [
        {
          "product": "CGAL Project",
          "vendor": "n/a",
          "versions": [
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              "version": "CGAL Project libcgal CGAL-5.1.1"
            }
          ]
        }
      ],
      "descriptions": [
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          "lang": "en",
          "value": "A code execution vulnerability exists in the Nef polygon-parsing functionality of CGAL libcgal CGAL-5.1.1 in Nef_S2/SNC_io_parser.h SNC_io_parser::read_sface() sfh-\u003evolume() OOB read. A specially crafted malformed file can lead to an out-of-bounds read and type confusion, which could lead to code execution. An attacker can provide malicious input to trigger this vulnerability."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
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          "descriptions": [
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              "cweId": "CWE-129",
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              "lang": "en",
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      "providerMetadata": {
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      },
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        },
        {
          "name": "[debian-lts-announce] 20221206 [SECURITY] [DLA 3226-1] cgal security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00011.html"
        },
        {
          "name": "GLSA-202305-34",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/202305-34"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b86d76f8-0f8a-4a96-a78d-d8abfc7fc29b",
    "assignerShortName": "talos",
    "cveId": "CVE-2020-35636",
    "datePublished": "2021-03-04T00:00:00.000Z",
    "dateReserved": "2020-12-22T00:00:00.000Z",
    "dateUpdated": "2025-04-23T19:44:35.825Z",
    "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.