Vulnerability-Lookup

CNVD-2021-44963

Vulnerability from cnvd - Published: 2021-06-25

Title

Http4s路径遍历漏洞（CNVD-2021-44963）

Description

Http4s是一款开源的用于Scala的流HTTP服务器。 Http4s存在路径遍历漏洞，攻击者可利用该漏洞获取敏感信息。

Severity

中

Patch Name

Http4s路径遍历漏洞（CNVD-2021-44963）的补丁

Patch Description

Http4s是一款开源的用于Scala的流HTTP服务器。 Http4s存在路径遍历漏洞，攻击者可利用该漏洞获取敏感信息。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/http4s/http4s/security/advisories/GHSA-6h7w-fc84-x7p6

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-32643

Impacted products

Name
['http4s http4s >=0.21.7，<=0.21.23', 'http4s http4s >=0.22.0-M1，<=0.22.0-M8', 'http4s http4s >=0.23.0-M1', 'http4s http4s >=1.0.0-M1，<=1.0.0-M22']

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JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-32643"
    }
  },
  "description": "Http4s\u662f\u4e00\u6b3e\u5f00\u6e90\u7684\u7528\u4e8eScala\u7684\u6d41HTTP\u670d\u52a1\u5668\u3002\n\nHttp4s\u5b58\u5728\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u654f\u611f\u4fe1\u606f\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/http4s/http4s/security/advisories/GHSA-6h7w-fc84-x7p6",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-44963",
  "openTime": "2021-06-25",
  "patchDescription": "Http4s\u662f\u4e00\u6b3e\u5f00\u6e90\u7684\u7528\u4e8eScala\u7684\u6d41HTTP\u670d\u52a1\u5668\u3002\r\n\r\nHttp4s\u5b58\u5728\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u654f\u611f\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": "Http4s\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff08CNVD-2021-44963\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "http4s http4s \u003e=0.21.7\uff0c\u003c=0.21.23",
      "http4s http4s \u003e=0.22.0-M1\uff0c\u003c=0.22.0-M8",
      "http4s http4s \u003e=0.23.0-M1",
      "http4s http4s \u003e=1.0.0-M1\uff0c\u003c=1.0.0-M22"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-32643",
  "serverity": "\u4e2d",
  "submitTime": "2021-05-28",
  "title": "Http4s\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff08CNVD-2021-44963\uff09"
}

CVE-2021-32643 (GCVE-0-2021-32643)

Vulnerability from cvelistv5 – Published: 2021-05-27 17:15 – Updated: 2024-08-03 23:25

Title

StaticFile.fromUrl can leak presence of a directory

Summary

Http4s is a Scala interface for HTTP services. `StaticFile.fromUrl` can leak the presence of a directory on a server when the `URL` scheme is not `file://`, and the URL points to a fetchable resource under its scheme and authority. The function returns `F[None]`, indicating no resource, if `url.getFile` is a directory, without first checking the scheme or authority of the URL. If a URL connection to the scheme and URL would return a stream, and the path in the URL exists as a directory on the server, the presence of the directory on the server could be inferred from the 404 response. The contents and other metadata about the directory are not exposed. This affects http4s versions: 0.21.7 through 0.21.23, 0.22.0-M1 through 0.22.0-M8, 0.23.0-M1, and 1.0.0-M1 through 1.0.0-M22. The [patch](https://github.com/http4s/http4s/commit/52e1890665410b4385e37b96bc49c5e3c708e4e9) is available in the following versions: v0.21.24, v0.22.0-M9, v0.23.0-M2, v1.0.0-M23. As a workaround users can avoid calling `StaticFile.fromUrl` with non-file URLs.

Severity

5.8 (Medium)


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

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/http4s/http4s/security/advisor…	x_refsource_CONFIRM
https://github.com/http4s/http4s/commit/52e189066…	x_refsource_MISC
https://mvnrepository.com/artifact/org.http4s/htt…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
http4s	http4s	Affected: >= 0.21.7, < 0.21.24 Affected: >= 0.22.0-M1, <= 0.22.0-M8 Affected: = 0.23.0-M1 Affected: >= 1.0.0-M1, < 1.0.0-M23

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JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T23:25:30.936Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/http4s/http4s/security/advisories/GHSA-6h7w-fc84-x7p6"
          },
          {
            "tags": [
              "x_refsource_MISC",
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            "url": "https://github.com/http4s/http4s/commit/52e1890665410b4385e37b96bc49c5e3c708e4e9"
          },
          {
            "tags": [
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              "x_transferred"
            ],
            "url": "https://mvnrepository.com/artifact/org.http4s/http4s-core"
          }
        ],
        "title": "CVE Program Container"
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          "vendor": "http4s",
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              "version": "\u003e= 0.22.0-M1, \u003c= 0.22.0-M8"
            },
            {
              "status": "affected",
              "version": "= 0.23.0-M1"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.0.0-M1, \u003c 1.0.0-M23"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Http4s is a Scala interface for HTTP services. `StaticFile.fromUrl` can leak the presence of a directory on a server when the `URL` scheme is not `file://`, and the URL points to a fetchable resource under its scheme and authority. The function returns `F[None]`, indicating no resource, if `url.getFile` is a directory, without first checking the scheme or authority of the URL. If a URL connection to the scheme and URL would return a stream, and the path in the URL exists as a directory on the server, the presence of the directory on the server could be inferred from the 404 response. The contents and other metadata about the directory are not exposed. This affects http4s versions: 0.21.7 through 0.21.23, 0.22.0-M1 through 0.22.0-M8, 0.23.0-M1, and 1.0.0-M1 through 1.0.0-M22. The [patch](https://github.com/http4s/http4s/commit/52e1890665410b4385e37b96bc49c5e3c708e4e9) is available in the following versions: v0.21.24, v0.22.0-M9, v0.23.0-M2, v1.0.0-M23. As a workaround users can avoid calling `StaticFile.fromUrl` with non-file URLs."
        }
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      "metrics": [
        {
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            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
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              "cweId": "CWE-22",
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              "lang": "en",
              "type": "CWE"
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      "providerMetadata": {
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          "tags": [
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        },
        {
          "tags": [
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          "url": "https://github.com/http4s/http4s/commit/52e1890665410b4385e37b96bc49c5e3c708e4e9"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://mvnrepository.com/artifact/org.http4s/http4s-core"
        }
      ],
      "source": {
        "advisory": "GHSA-6h7w-fc84-x7p6",
        "discovery": "UNKNOWN"
      },
      "title": "StaticFile.fromUrl can leak presence of a directory",
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        },
        "affects": {
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                          {
                            "version_value": "\u003e= 0.22.0-M1, \u003c= 0.22.0-M8"
                          },
                          {
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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.