Vulnerability-Lookup

CNVD-2021-38661

Vulnerability from cnvd - Published: 2021-06-02

Title

Github authelia输入验证错误漏洞

Description

Github authelia是美国Github公司的一个应用软件。一个开源身份验证和授权服务器，可通过Web门户为应用程序提供2要素身份验证和单点登录（SSO）。 Authelia 4.27.4版本及之前版本存在输入验证错误漏洞，攻击者可利用该漏洞可以利用HTTP查询参数将用户从web应用程序重定向到任何域，包括潜在的恶意站点。

Severity

中

Patch Name

Github authelia输入验证错误漏洞的补丁

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://github.com/authelia/authelia/security/advisories/GHSA-36f2-fcrx-fp4j

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-29456

Impacted products

Name
github authelia <=4.27.4

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-29456"
    }
  },
  "description": "Github authelia\u662f\u7f8e\u56fdGithub\u516c\u53f8\u7684\u4e00\u4e2a\u5e94\u7528\u8f6f\u4ef6\u3002\u4e00\u4e2a\u5f00\u6e90\u8eab\u4efd\u9a8c\u8bc1\u548c\u6388\u6743\u670d\u52a1\u5668\uff0c\u53ef\u901a\u8fc7Web\u95e8\u6237\u4e3a\u5e94\u7528\u7a0b\u5e8f\u63d0\u4f9b2\u8981\u7d20\u8eab\u4efd\u9a8c\u8bc1\u548c\u5355\u70b9\u767b\u5f55\uff08SSO\uff09\u3002\n\nAuthelia 4.27.4\u7248\u672c\u53ca\u4e4b\u524d\u7248\u672c\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u53ef\u4ee5\u5229\u7528HTTP\u67e5\u8be2\u53c2\u6570\u5c06\u7528\u6237\u4eceweb\u5e94\u7528\u7a0b\u5e8f\u91cd\u5b9a\u5411\u5230\u4efb\u4f55\u57df\uff0c\u5305\u62ec\u6f5c\u5728\u7684\u6076\u610f\u7ad9\u70b9\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/authelia/authelia/security/advisories/GHSA-36f2-fcrx-fp4j",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-38661",
  "openTime": "2021-06-02",
  "patchDescription": "Github authelia\u662f\u7f8e\u56fdGithub\u516c\u53f8\u7684\u4e00\u4e2a\u5e94\u7528\u8f6f\u4ef6\u3002\u4e00\u4e2a\u5f00\u6e90\u8eab\u4efd\u9a8c\u8bc1\u548c\u6388\u6743\u670d\u52a1\u5668\uff0c\u53ef\u901a\u8fc7Web\u95e8\u6237\u4e3a\u5e94\u7528\u7a0b\u5e8f\u63d0\u4f9b2\u8981\u7d20\u8eab\u4efd\u9a8c\u8bc1\u548c\u5355\u70b9\u767b\u5f55\uff08SSO\uff09\u3002\r\n\r\nAuthelia 4.27.4\u7248\u672c\u53ca\u4e4b\u524d\u7248\u672c\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u53ef\u4ee5\u5229\u7528HTTP\u67e5\u8be2\u53c2\u6570\u5c06\u7528\u6237\u4eceweb\u5e94\u7528\u7a0b\u5e8f\u91cd\u5b9a\u5411\u5230\u4efb\u4f55\u57df\uff0c\u5305\u62ec\u6f5c\u5728\u7684\u6076\u610f\u7ad9\u70b9\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": "Github authelia\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "github authelia \u003c=4.27.4"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-29456",
  "serverity": "\u4e2d",
  "submitTime": "2021-04-22",
  "title": "Github authelia\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2021-29456 (GCVE-0-2021-29456)

Vulnerability from cvelistv5 – Published: 2021-04-21 18:50 – Updated: 2024-08-03 22:02

Title

Authelia allows open redirects on the logout endpoint

Summary

Authelia is an open-source authentication and authorization server providing 2-factor authentication and single sign-on (SSO) for your applications via a web portal. In versions 4.27.4 and earlier, utilizing a HTTP query parameter an attacker is able to redirect users from the web application to any domain, including potentially malicious sites. This security issue does not directly impact the security of the web application itself. As a workaround, one can use a reverse proxy to strip the query parameter from the affected endpoint. There is a patch for version 4.28.0.

Severity

5.7 (Medium)


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

CWE

CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Assigner

GitHub_M mitre root

References

1 reference

URL	Tags
https://github.com/authelia/authelia/security/adv…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
authelia	authelia	Affected: <= 4.27.4

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T22:02:51.933Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/authelia/authelia/security/advisories/GHSA-36f2-fcrx-fp4j"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "authelia",
          "vendor": "authelia",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 4.27.4"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Authelia is an open-source authentication and authorization server providing 2-factor authentication and single sign-on (SSO) for your applications via a web portal. In versions 4.27.4 and earlier, utilizing a HTTP query parameter an attacker is able to redirect users from the web application to any domain, including potentially malicious sites. This security issue does not directly impact the security of the web application itself. As a workaround, one can use a reverse proxy to strip the query parameter from the affected endpoint. There is a patch for version 4.28.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-601",
              "description": "CWE-601 URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-04-21T18:50:14.000Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/authelia/authelia/security/advisories/GHSA-36f2-fcrx-fp4j"
        }
      ],
      "source": {
        "advisory": "GHSA-36f2-fcrx-fp4j",
        "discovery": "UNKNOWN"
      },
      "title": "Authelia allows open redirects on the logout endpoint",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-29456",
          "STATE": "PUBLIC",
          "TITLE": "Authelia allows open redirects on the logout endpoint"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "authelia",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003c= 4.27.4"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "authelia"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Authelia is an open-source authentication and authorization server providing 2-factor authentication and single sign-on (SSO) for your applications via a web portal. In versions 4.27.4 and earlier, utilizing a HTTP query parameter an attacker is able to redirect users from the web application to any domain, including potentially malicious sites. This security issue does not directly impact the security of the web application itself. As a workaround, one can use a reverse proxy to strip the query parameter from the affected endpoint. There is a patch for version 4.28.0."
            }
          ]
        },
        "impact": {
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-601 URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/authelia/authelia/security/advisories/GHSA-36f2-fcrx-fp4j",
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          "discovery": "UNKNOWN"
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    "datePublished": "2021-04-21T18:50:14.000Z",
    "dateReserved": "2021-03-30T00:00:00.000Z",
    "dateUpdated": "2024-08-03T22:02:51.933Z",
    "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.
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CNVD-2021-38661

CVE-2021-29456 (GCVE-0-2021-29456)

Tags

Sightings

Nomenclature

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