Vulnerability Description
aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. In aiohttp before version 3.7.4 there is an open redirect vulnerability. A maliciously crafted link to an aiohttp-based web-server could redirect the browser to a different website. It is caused by a bug in the `aiohttp.web_middlewares.normalize_path_middleware` middleware. This security problem has been fixed in 3.7.4. Upgrade your dependency using pip as follows "pip install aiohttp >= 3.7.4". If upgrading is not an option for you, a workaround can be to avoid using `aiohttp.web_middlewares.normalize_path_middleware` in your applications.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Aiohttp | Aiohttp | < 3.7.4 |
| Debian | Debian Linux | 10.0 |
| Fedoraproject | Fedora | 33 |
Related Weaknesses (CWE)
References
- https://github.com/aio-libs/aiohttp/blob/master/CHANGES.rst#374-2021-02-25Third Party Advisory
- https://github.com/aio-libs/aiohttp/commit/2545222a3853e31ace15d87ae0e2effb7da0cPatchThird Party Advisory
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-v6wp-4m6f-gcjgThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://pypi.org/project/aiohttp/ProductThird Party Advisory
- https://security.gentoo.org/glsa/202208-19Third Party Advisory
- https://www.debian.org/security/2021/dsa-4864Third Party Advisory
- https://github.com/aio-libs/aiohttp/blob/master/CHANGES.rst#374-2021-02-25Third Party Advisory
- https://github.com/aio-libs/aiohttp/commit/2545222a3853e31ace15d87ae0e2effb7da0cPatchThird Party Advisory
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-v6wp-4m6f-gcjgThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://pypi.org/project/aiohttp/ProductThird Party Advisory
- https://security.gentoo.org/glsa/202208-19Third Party Advisory
FAQ
What is CVE-2021-21330?
CVE-2021-21330 is a vulnerability with a CVSS score of 3.1 (LOW). aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. In aiohttp before version 3.7.4 there is an open redirect vulnerability. A maliciously crafted link to an aiohttp-based ...
How severe is CVE-2021-21330?
CVE-2021-21330 has been rated LOW with a CVSS base score of 3.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-21330?
Check the references section above for vendor advisories and patch information. Affected products include: Aiohttp Aiohttp, Debian Debian Linux, Fedoraproject Fedora.