ghsa-jwhx-xcg6-8xhj
Vulnerability from github
6.3 (Medium) - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Summary
Static routes which contain files with compressed variants (.gz
or .br
extension) were vulnerable to path traversal outside the root directory if those variants are symbolic links.
Details
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 Path.stat()
and Path.open()
to send the file.
Impact
Servers with static routes that contain compressed variants as symbolic links, pointing outside the root directory, or that permit users to upload or create such links, are impacted.
Patch: https://github.com/aio-libs/aiohttp/pull/8653/files
{ "affected": [ { "package": { "ecosystem": "PyPI", "name": "aiohttp" }, "ranges": [ { "events": [ { "introduced": "0" }, { "fixed": "3.10.2" } ], "type": "ECOSYSTEM" } ] } ], "aliases": [ "CVE-2024-42367" ], "database_specific": { "cwe_ids": [ "CWE-61" ], "github_reviewed": true, "github_reviewed_at": "2024-08-09T16:49:58Z", "nvd_published_at": "2024-08-12T13:38:34Z", "severity": "MODERATE" }, "details": "### Summary\nStatic routes which contain files with compressed variants (`.gz` or `.br` extension) were vulnerable to path traversal outside the root directory if those variants are symbolic links.\n\n### Details\nThe 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 `Path.stat()` and `Path.open()` to send the file.\n\n### Impact\nServers with static routes that contain compressed variants as symbolic links, pointing outside the root directory, or that permit users to upload or create such links, are impacted.\n\n----\n\nPatch: https://github.com/aio-libs/aiohttp/pull/8653/files", "id": "GHSA-jwhx-xcg6-8xhj", "modified": "2024-08-12T16:02:22Z", "published": "2024-08-09T16:49:58Z", "references": [ { "type": "WEB", "url": "https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jwhx-xcg6-8xhj" }, { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42367" }, { "type": "WEB", "url": "https://github.com/aio-libs/aiohttp/pull/8653" }, { "type": "WEB", "url": "https://github.com/aio-libs/aiohttp/commit/ce2e9758814527589b10759a20783fb03b98339f" }, { "type": "PACKAGE", "url": "https://github.com/aio-libs/aiohttp" }, { "type": "WEB", "url": "https://github.com/aio-libs/aiohttp/blob/e0ff5246e1d29b7710ab1a2bbc972b48169f1c05/aiohttp/web_fileresponse.py#L177" }, { "type": "WEB", "url": "https://github.com/aio-libs/aiohttp/blob/e0ff5246e1d29b7710ab1a2bbc972b48169f1c05/aiohttp/web_urldispatcher.py#L674" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N", "type": "CVSS_V3" }, { "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N", "type": "CVSS_V4" } ], "summary": "In aiohttp, compressed files as symlinks are not protected from path traversal" }
Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.