Vulnerability-Lookup

CNVD-2021-88720

Vulnerability from cnvd - Published: 2021-11-18

Title

Jenkins存在未明漏洞（CNVD-2021-88720）

Description

Jenkins是Jenkins开源的一个应用软件。一个开源自动化服务器Jenkins提供了数百个插件来支持构建，部署和自动化任何项目。 Jenkins 存在安全漏洞，该漏洞源于Jenkins 2.318 及更早版本、LTS 2.303.2 及更早版本的文件路径过滤实现中存在多个漏洞。攻击者可利用该漏洞允许代理进程在Jenkins控制器文件系统上读写任意文件，并获取有关 Jenkins 控制器文件系统的一些信息。

Severity

高

Patch Name

Jenkins存在未明漏洞（CNVD-2021-88720）的补丁

Patch Description

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://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455

Reference

https://access.redhat.com/security/cve/cve-2021-21691

Impacted products

Name
['Jenkins Jenkins <2.319', 'Jenkins Jenkins LTS <2.303.3']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-21691"
    }
  },
  "description": "Jenkins\u662fJenkins\u5f00\u6e90\u7684\u4e00\u4e2a\u5e94\u7528\u8f6f\u4ef6\u3002\u4e00\u4e2a\u5f00\u6e90\u81ea\u52a8\u5316\u670d\u52a1\u5668Jenkins\u63d0\u4f9b\u4e86\u6570\u767e\u4e2a\u63d2\u4ef6\u6765\u652f\u6301\u6784\u5efa\uff0c\u90e8\u7f72\u548c\u81ea\u52a8\u5316\u4efb\u4f55\u9879\u76ee\u3002\n\nJenkins \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eJenkins 2.318 \u53ca\u66f4\u65e9\u7248\u672c\u3001LTS 2.303.2 \u53ca\u66f4\u65e9\u7248\u672c\u7684\u6587\u4ef6\u8def\u5f84\u8fc7\u6ee4\u5b9e\u73b0\u4e2d\u5b58\u5728\u591a\u4e2a\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5141\u8bb8\u4ee3\u7406\u8fdb\u7a0b\u5728Jenkins\u63a7\u5236\u5668\u6587\u4ef6\u7cfb\u7edf\u4e0a\u8bfb\u5199\u4efb\u610f\u6587\u4ef6\uff0c\u5e76\u83b7\u53d6\u6709\u5173 Jenkins \u63a7\u5236\u5668\u6587\u4ef6\u7cfb\u7edf\u7684\u4e00\u4e9b\u4fe1\u606f\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://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-88720",
  "openTime": "2021-11-18",
  "patchDescription": "Jenkins\u662fJenkins\u5f00\u6e90\u7684\u4e00\u4e2a\u5e94\u7528\u8f6f\u4ef6\u3002\u4e00\u4e2a\u5f00\u6e90\u81ea\u52a8\u5316\u670d\u52a1\u5668Jenkins\u63d0\u4f9b\u4e86\u6570\u767e\u4e2a\u63d2\u4ef6\u6765\u652f\u6301\u6784\u5efa\uff0c\u90e8\u7f72\u548c\u81ea\u52a8\u5316\u4efb\u4f55\u9879\u76ee\u3002\r\n\r\nJenkins \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eJenkins 2.318 \u53ca\u66f4\u65e9\u7248\u672c\u3001LTS 2.303.2 \u53ca\u66f4\u65e9\u7248\u672c\u7684\u6587\u4ef6\u8def\u5f84\u8fc7\u6ee4\u5b9e\u73b0\u4e2d\u5b58\u5728\u591a\u4e2a\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5141\u8bb8\u4ee3\u7406\u8fdb\u7a0b\u5728Jenkins\u63a7\u5236\u5668\u6587\u4ef6\u7cfb\u7edf\u4e0a\u8bfb\u5199\u4efb\u610f\u6587\u4ef6\uff0c\u5e76\u83b7\u53d6\u6709\u5173 Jenkins \u63a7\u5236\u5668\u6587\u4ef6\u7cfb\u7edf\u7684\u4e00\u4e9b\u4fe1\u606f\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": "Jenkins\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2021-88720\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Jenkins Jenkins \u003c2.319",
      "Jenkins Jenkins LTS \u003c2.303.3"
    ]
  },
  "referenceLink": "https://access.redhat.com/security/cve/cve-2021-21691",
  "serverity": "\u9ad8",
  "submitTime": "2021-11-08",
  "title": "Jenkins\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\uff08CNVD-2021-88720\uff09"
}

CVE-2021-21691 (GCVE-0-2021-21691)

Vulnerability from cvelistv5 – Published: 2021-11-04 16:30 – Updated: 2024-08-03 18:23

Summary

Creating symbolic links is possible without the 'symlink' agent-to-controller access control permission in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.

Severity

No CVSS data available.

Assigner

jenkins mitre root

References

1 reference

URL	Tags
https://www.jenkins.io/security/advisory/2021-11-…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
Jenkins project	Jenkins	Affected: unspecified , ≤ 2.318 (custom) Affected: unspecified , ≤ LTS 2.303.2 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T18:23:27.504Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Jenkins",
          "vendor": "Jenkins project",
          "versions": [
            {
              "lessThanOrEqual": "2.318",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "LTS 2.303.2",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Creating symbolic links is possible without the \u0027symlink\u0027 agent-to-controller access control permission in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-10-24T15:52:03.167Z",
        "orgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b",
        "shortName": "jenkins"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "jenkinsci-cert@googlegroups.com",
          "ID": "CVE-2021-21691",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Jenkins",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c=",
                            "version_value": "2.318"
                          },
                          {
                            "version_affected": "\u003c=",
                            "version_value": "LTS 2.303.2"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Jenkins project"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Creating symbolic links is possible without the \u0027symlink\u0027 agent-to-controller access control permission in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-863: Incorrect Authorization"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455",
              "refsource": "CONFIRM",
              "url": "https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b",
    "assignerShortName": "jenkins",
    "cveId": "CVE-2021-21691",
    "datePublished": "2021-11-04T16:30:33.000Z",
    "dateReserved": "2021-01-04T00:00:00.000Z",
    "dateUpdated": "2024-08-03T18:23:27.504Z",
    "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.

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

CNVD-2021-88720

CVE-2021-21691 (GCVE-0-2021-21691)

Tags

Sightings

Nomenclature

Related by attack behaviour