CVE-2024-42367 (GCVE-0-2024-42367)

Vulnerability from cvelistv5 – Published: 2024-08-09 17:25 – Updated: 2025-06-09 12:17
VLAI?
Title
In aiohttp, compressed files as symlinks are not protected from path traversal
Summary
aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. In versions on the 3.10 branch prior to version 3.10.2, static routes which contain files with compressed variants (`.gz` or `.br` extension) are vulnerable to path traversal outside the root directory if those variants are symbolic links. The server protects static routes from path traversal outside the root directory when `follow_symlinks=False` (default). It does this by resolving the requested URL to an absolute path and then checking that path relative to the root. However, these checks are not performed when looking for compressed variants in the `FileResponse` class, and symbolic links are then automatically followed when performing the `Path.stat()` and `Path.open()` to send the file. Version 3.10.2 contains a patch for the issue.
Severity ?
4.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
Impacted products
Vendor Product Version
aio-libs aiohttp Affected: >= 3.10.0b1, < 3.10.2
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-42367",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-08-09T18:18:15.360284Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-08-09T18:18:23.758Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "aiohttp",
          "vendor": "aio-libs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 3.10.0b1, \u003c 3.10.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. In versions on the 3.10 branch prior to version 3.10.2, static routes which contain files with compressed variants (`.gz` or `.br` extension) are vulnerable to path traversal outside the root directory if those variants are symbolic links. The server protects static routes from path traversal outside the root directory when `follow_symlinks=False` (default).  It does this by resolving the requested URL to an absolute path and then checking that path relative to the root. However, these checks are not performed when looking for compressed variants in the `FileResponse` class, and symbolic links are then automatically followed when performing the `Path.stat()` and `Path.open()` to send the file. Version 3.10.2 contains a patch for the issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-61",
              "description": "CWE-61: UNIX Symbolic Link (Symlink) Following",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-09T12:17:50.733Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jwhx-xcg6-8xhj",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jwhx-xcg6-8xhj"
        },
        {
          "name": "https://github.com/aio-libs/aiohttp/pull/8653",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/aio-libs/aiohttp/pull/8653"
        },
        {
          "name": "https://github.com/aio-libs/aiohttp/commit/ce2e9758814527589b10759a20783fb03b98339f",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/aio-libs/aiohttp/commit/ce2e9758814527589b10759a20783fb03b98339f"
        },
        {
          "name": "https://github.com/aio-libs/aiohttp/blob/e0ff5246e1d29b7710ab1a2bbc972b48169f1c05/aiohttp/web_fileresponse.py#L177",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/aio-libs/aiohttp/blob/e0ff5246e1d29b7710ab1a2bbc972b48169f1c05/aiohttp/web_fileresponse.py#L177"
        },
        {
          "name": "https://github.com/aio-libs/aiohttp/blob/e0ff5246e1d29b7710ab1a2bbc972b48169f1c05/aiohttp/web_urldispatcher.py#L674",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/aio-libs/aiohttp/blob/e0ff5246e1d29b7710ab1a2bbc972b48169f1c05/aiohttp/web_urldispatcher.py#L674"
        }
      ],
      "source": {
        "advisory": "GHSA-jwhx-xcg6-8xhj",
        "discovery": "UNKNOWN"
      },
      "title": "In aiohttp, compressed files as symlinks are not protected from path traversal"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-42367",
    "datePublished": "2024-08-09T17:25:22.562Z",
    "dateReserved": "2024-07-30T14:01:33.923Z",
    "dateUpdated": "2025-06-09T12:17:50.733Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-42367",
      "date": "2026-05-24",
      "epss": "0.00352",
      "percentile": "0.57712"
    },
    "fkie_nvd": {
      "descriptions": "[{\"lang\": \"en\", \"value\": \"aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.10.2, static routes which contain files with compressed variants (`.gz` or `.br` extension) are vulnerable to path traversal outside the root directory if those variants are symbolic links. The server protects static routes from path traversal outside the root directory when `follow_symlinks=False` (default).  It does this by resolving the requested URL to an absolute path and then checking that path relative to the root. However, these checks are not performed when looking for compressed variants in the `FileResponse` class, and symbolic links are then automatically followed when performing the `Path.stat()` and `Path.open()` to send the file. Version 3.10.2 contains a patch for the issue.\"}, {\"lang\": \"es\", \"value\": \"aiohttp es un framework cliente/servidor HTTP as\\u00edncrono para asyncio y Python. Antes de la versi\\u00f3n 3.10.2, las rutas est\\u00e1ticas que contienen archivos con variantes comprimidas (extensi\\u00f3n `.gz` o `.br`) son vulnerables al path traversal fuera del directorio ra\\u00edz si esas variantes son enlaces simb\\u00f3licos. El servidor protege las rutas est\\u00e1ticas contra el path traversal fuera del directorio ra\\u00edz cuando `follow_symlinks=False` (predeterminado). Para ello, resuelve la URL solicitada en una ruta absoluta y luego verifica esa ruta en relaci\\u00f3n con la ra\\u00edz. Sin embargo, estas comprobaciones no se realizan cuando se buscan variantes comprimidas en la clase `FileResponse`, y los enlaces simb\\u00f3licos se siguen autom\\u00e1ticamente al realizar `Path.stat()` y `Path.open()` para enviar el archivo. La versi\\u00f3n 3.10.2 contiene un parche para el problema.\"}]",
      "id": "CVE-2024-42367",
      "lastModified": "2024-08-12T13:41:36.517",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"security-advisories@github.com\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N\", \"baseScore\": 4.8, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 2.2, \"impactScore\": 2.5}]}",
      "published": "2024-08-12T13:38:34.240",
      "references": "[{\"url\": \"https://github.com/aio-libs/aiohttp/blob/e0ff5246e1d29b7710ab1a2bbc972b48169f1c05/aiohttp/web_fileresponse.py#L177\", \"source\": \"security-advisories@github.com\"}, {\"url\": \"https://github.com/aio-libs/aiohttp/blob/e0ff5246e1d29b7710ab1a2bbc972b48169f1c05/aiohttp/web_urldispatcher.py#L674\", \"source\": \"security-advisories@github.com\"}, {\"url\": \"https://github.com/aio-libs/aiohttp/commit/ce2e9758814527589b10759a20783fb03b98339f\", \"source\": \"security-advisories@github.com\"}, {\"url\": \"https://github.com/aio-libs/aiohttp/pull/8653\", \"source\": \"security-advisories@github.com\"}, {\"url\": \"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jwhx-xcg6-8xhj\", \"source\": \"security-advisories@github.com\"}]",
      "sourceIdentifier": "security-advisories@github.com",
      "vulnStatus": "Awaiting Analysis",
      "weaknesses": "[{\"source\": \"security-advisories@github.com\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-61\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-42367\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2024-08-12T13:38:34.240\",\"lastModified\":\"2025-08-19T15:12:45.730\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. In versions on the 3.10 branch prior to version 3.10.2, static routes which contain files with compressed variants (`.gz` or `.br` extension) are vulnerable to path traversal outside the root directory if those variants are symbolic links. The server protects static routes from path traversal outside the root directory when `follow_symlinks=False` (default).  It does this by resolving the requested URL to an absolute path and then checking that path relative to the root. However, these checks are not performed when looking for compressed variants in the `FileResponse` class, and symbolic links are then automatically followed when performing the `Path.stat()` and `Path.open()` to send the file. Version 3.10.2 contains a patch for the issue.\"},{\"lang\":\"es\",\"value\":\"aiohttp es un framework cliente/servidor HTTP as\u00edncrono para asyncio y Python. Antes de la versi\u00f3n 3.10.2, las rutas est\u00e1ticas que contienen archivos con variantes comprimidas (extensi\u00f3n `.gz` o `.br`) son vulnerables al path traversal fuera del directorio ra\u00edz si esas variantes son enlaces simb\u00f3licos. El servidor protege las rutas est\u00e1ticas contra el path traversal fuera del directorio ra\u00edz cuando `follow_symlinks=False` (predeterminado). Para ello, resuelve la URL solicitada en una ruta absoluta y luego verifica esa ruta en relaci\u00f3n con la ra\u00edz. Sin embargo, estas comprobaciones no se realizan cuando se buscan variantes comprimidas en la clase `FileResponse`, y los enlaces simb\u00f3licos se siguen autom\u00e1ticamente al realizar `Path.stat()` y `Path.open()` para enviar el archivo. La versi\u00f3n 3.10.2 contiene un parche para el problema.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N\",\"baseScore\":4.8,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.2,\"impactScore\":2.5},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N\",\"baseScore\":4.8,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.2,\"impactScore\":2.5}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-61\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.10.0\",\"versionEndExcluding\":\"3.10.2\",\"matchCriteriaId\":\"7030D57D-4198-4DBF-B6DE-D45360918BC5\"}]}]}],\"references\":[{\"url\":\"https://github.com/aio-libs/aiohttp/blob/e0ff5246e1d29b7710ab1a2bbc972b48169f1c05/aiohttp/web_fileresponse.py#L177\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Product\"]},{\"url\":\"https://github.com/aio-libs/aiohttp/blob/e0ff5246e1d29b7710ab1a2bbc972b48169f1c05/aiohttp/web_urldispatcher.py#L674\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Product\"]},{\"url\":\"https://github.com/aio-libs/aiohttp/commit/ce2e9758814527589b10759a20783fb03b98339f\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/aio-libs/aiohttp/pull/8653\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jwhx-xcg6-8xhj\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-42367\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-08-09T18:18:15.360284Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-08-09T18:18:20.688Z\"}}], \"cna\": {\"title\": \"In aiohttp, compressed files as symlinks are not protected from path traversal\", \"source\": {\"advisory\": \"GHSA-jwhx-xcg6-8xhj\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.8, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"LOW\"}}], \"affected\": [{\"vendor\": \"aio-libs\", \"product\": \"aiohttp\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 3.10.0b1, \u003c 3.10.2\"}]}], \"references\": [{\"url\": \"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jwhx-xcg6-8xhj\", \"name\": \"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jwhx-xcg6-8xhj\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/aio-libs/aiohttp/pull/8653\", \"name\": \"https://github.com/aio-libs/aiohttp/pull/8653\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/aio-libs/aiohttp/commit/ce2e9758814527589b10759a20783fb03b98339f\", \"name\": \"https://github.com/aio-libs/aiohttp/commit/ce2e9758814527589b10759a20783fb03b98339f\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/aio-libs/aiohttp/blob/e0ff5246e1d29b7710ab1a2bbc972b48169f1c05/aiohttp/web_fileresponse.py#L177\", \"name\": \"https://github.com/aio-libs/aiohttp/blob/e0ff5246e1d29b7710ab1a2bbc972b48169f1c05/aiohttp/web_fileresponse.py#L177\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/aio-libs/aiohttp/blob/e0ff5246e1d29b7710ab1a2bbc972b48169f1c05/aiohttp/web_urldispatcher.py#L674\", \"name\": \"https://github.com/aio-libs/aiohttp/blob/e0ff5246e1d29b7710ab1a2bbc972b48169f1c05/aiohttp/web_urldispatcher.py#L674\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. In versions on the 3.10 branch prior to version 3.10.2, static routes which contain files with compressed variants (`.gz` or `.br` extension) are vulnerable to path traversal outside the root directory if those variants are symbolic links. The server protects static routes from path traversal outside the root directory when `follow_symlinks=False` (default).  It does this by resolving the requested URL to an absolute path and then checking that path relative to the root. However, these checks are not performed when looking for compressed variants in the `FileResponse` class, and symbolic links are then automatically followed when performing the `Path.stat()` and `Path.open()` to send the file. Version 3.10.2 contains a patch for the issue.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-61\", \"description\": \"CWE-61: UNIX Symbolic Link (Symlink) Following\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2025-06-09T12:17:50.733Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-42367\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-06-09T12:17:50.733Z\", \"dateReserved\": \"2024-07-30T14:01:33.923Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2024-08-09T17:25:22.562Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.