CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
AI Score
Confidence
Low
EPSS
Percentile
16.3%
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.
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.
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.
github.com/aio-libs/aiohttp
github.com/aio-libs/aiohttp/blob/e0ff5246e1d29b7710ab1a2bbc972b48169f1c05/aiohttp/web_fileresponse.py#L177
github.com/aio-libs/aiohttp/blob/e0ff5246e1d29b7710ab1a2bbc972b48169f1c05/aiohttp/web_urldispatcher.py#L674
github.com/aio-libs/aiohttp/commit/ce2e9758814527589b10759a20783fb03b98339f
github.com/aio-libs/aiohttp/pull/8653
github.com/aio-libs/aiohttp/security/advisories/GHSA-jwhx-xcg6-8xhj
nvd.nist.gov/vuln/detail/CVE-2024-42367
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
AI Score
Confidence
Low
EPSS
Percentile
16.3%