Vulnerability-Lookup

CNVD-2020-63002

Vulnerability from cnvd - Published: 2020-11-13

Title

Alerta身份验证绕过漏洞

Description

Alerta是个人开发者的一个Python 编写的监控系统。 Alerta 8.1.0之前版本存在身份验证绕过漏洞，该漏洞源于用户在将Alerta服务器配置为使用LDAP作为授权提供程序时提供一个空密码，那么他们就可以绕过LDAP身份验证。目前没有详细的漏洞细节提供。

Severity

高

Patch Name

Alerta身份验证绕过漏洞的补丁

Patch Description

Alerta是个人开发者的一个Python 编写的监控系统。 Alerta 8.1.0之前版本存在身份验证绕过漏洞，该漏洞源于用户在将Alerta服务器配置为使用LDAP作为授权提供程序时提供一个空密码，那么他们就可以绕过LDAP身份验证。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

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jh

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-26214

Impacted products

Name
Alerta Alerta <8.1.0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-26214",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-26214"
    }
  },
  "description": "Alerta\u662f\u4e2a\u4eba\u5f00\u53d1\u8005\u7684\u4e00\u4e2aPython \u7f16\u5199\u7684\u76d1\u63a7\u7cfb\u7edf\u3002\n\nAlerta 8.1.0\u4e4b\u524d\u7248\u672c\u5b58\u5728\u8eab\u4efd\u9a8c\u8bc1\u7ed5\u8fc7\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7528\u6237\u5728\u5c06Alerta\u670d\u52a1\u5668\u914d\u7f6e\u4e3a\u4f7f\u7528LDAP\u4f5c\u4e3a\u6388\u6743\u63d0\u4f9b\u7a0b\u5e8f\u65f6\u63d0\u4f9b\u4e00\u4e2a\u7a7a\u5bc6\u7801\uff0c\u90a3\u4e48\u4ed6\u4eec\u5c31\u53ef\u4ee5\u7ed5\u8fc7LDAP\u8eab\u4efd\u9a8c\u8bc1\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jh",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-63002",
  "openTime": "2020-11-13",
  "patchDescription": "Alerta\u662f\u4e2a\u4eba\u5f00\u53d1\u8005\u7684\u4e00\u4e2aPython \u7f16\u5199\u7684\u76d1\u63a7\u7cfb\u7edf\u3002\r\n\r\nAlerta 8.1.0\u4e4b\u524d\u7248\u672c\u5b58\u5728\u8eab\u4efd\u9a8c\u8bc1\u7ed5\u8fc7\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7528\u6237\u5728\u5c06Alerta\u670d\u52a1\u5668\u914d\u7f6e\u4e3a\u4f7f\u7528LDAP\u4f5c\u4e3a\u6388\u6743\u63d0\u4f9b\u7a0b\u5e8f\u65f6\u63d0\u4f9b\u4e00\u4e2a\u7a7a\u5bc6\u7801\uff0c\u90a3\u4e48\u4ed6\u4eec\u5c31\u53ef\u4ee5\u7ed5\u8fc7LDAP\u8eab\u4efd\u9a8c\u8bc1\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": "Alerta\u8eab\u4efd\u9a8c\u8bc1\u7ed5\u8fc7\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Alerta Alerta \u003c8.1.0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-26214",
  "serverity": "\u9ad8",
  "submitTime": "2020-11-09",
  "title": "Alerta\u8eab\u4efd\u9a8c\u8bc1\u7ed5\u8fc7\u6f0f\u6d1e"
}

CVE-2020-26214 (GCVE-0-2020-26214)

Vulnerability from cvelistv5 – Published: 2020-11-06 17:50 – Updated: 2024-08-04 15:49

Title

LDAP authentication bypass in Alerta

Summary

In Alerta before version 8.1.0, users may be able to bypass LDAP authentication if they provide an empty password when Alerta server is configure to use LDAP as the authorization provider. Only deployments where LDAP servers are configured to allow unauthenticated authentication mechanism for anonymous authorization are affected. A fix has been implemented in version 8.1.0 that returns HTTP 401 Unauthorized response for any authentication attempts where the password field is empty. As a workaround LDAP administrators can disallow unauthenticated bind requests by clients.

Severity

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE

CWE-287 - Improper Authentication

Assigner

GitHub_M mitre root Scorecard

References

6 references

URL	Tags
https://github.com/alerta/alerta/security/advisor…	x_refsource_CONFIRM
https://github.com/alerta/alerta/issues/1277	x_refsource_MISC
https://github.com/alerta/alerta/pull/1345	x_refsource_MISC
https://github.com/alerta/alerta/commit/2bfa31779…	x_refsource_MISC
https://pypi.org/project/alerta-server/8.1.0/	x_refsource_MISC
https://tools.ietf.org/html/rfc4513#section-5.1.2	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
alerta	alerta	Affected: < 8.1.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T15:49:07.233Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jh"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/alerta/alerta/issues/1277"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/alerta/alerta/pull/1345"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/alerta/alerta/commit/2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://pypi.org/project/alerta-server/8.1.0/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://tools.ietf.org/html/rfc4513#section-5.1.2"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "alerta",
          "vendor": "alerta",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 8.1.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In Alerta before version 8.1.0, users may be able to bypass LDAP authentication if they provide an empty password when Alerta server is configure to use LDAP as the authorization provider. Only deployments where LDAP servers are configured to allow unauthenticated authentication mechanism for anonymous authorization are affected. A fix has been implemented in version 8.1.0 that returns HTTP 401 Unauthorized response for any authentication attempts where the password field is empty. As a workaround LDAP administrators can disallow unauthenticated bind requests by clients."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287: Improper Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-11-06T17:50:17.000Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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          "url": "https://github.com/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jh"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/alerta/alerta/issues/1277"
        },
        {
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            "x_refsource_MISC"
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          "url": "https://github.com/alerta/alerta/pull/1345"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/alerta/alerta/commit/2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://pypi.org/project/alerta-server/8.1.0/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://tools.ietf.org/html/rfc4513#section-5.1.2"
        }
      ],
      "source": {
        "advisory": "GHSA-5hmm-x8q8-w5jh",
        "discovery": "UNKNOWN"
      },
      "title": "LDAP authentication bypass in Alerta",
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        },
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    "dateReserved": "2020-10-01T00:00:00.000Z",
    "dateUpdated": "2024-08-04T15:49:07.233Z",
    "state": "PUBLISHED"
  },
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  "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.

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CNVD-2020-63002

CVE-2020-26214 (GCVE-0-2020-26214)

Tags

Sightings

Nomenclature

Related by attack behaviour