medium
6.1
CWE
601
Advisory Published
CVE Published
Updated

CVE-2021-21330: Open redirect vulnerability in aiohttp

First published: Fri Feb 26 2021(Updated: )

### Impact 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. ### Patches This security problem has been fixed in v3.7.4. Upgrade your dependency as follows: [`pip install aiohttp >= 3.7.4`] ### Workarounds If upgrading is not an option for you, a workaround can be to avoid using `aiohttp.web_middlewares.normalize_path_middleware` in your applications. ### References * [aiohttp @ PyPI] * [GHSA-v6wp-4m6f-gcjg] * [OWASP page on open redirects] ### For more information If you have any questions or comments about this advisory: * Open an issue in the [aiohttp repo](https://github.com/aio-libs/aiohttp/issues/new/choose) * Email us at wk+aio-libs-security@sydorenko.org.ua and/or andrew.svetlov+aio-libs-security@gmail.com Credit: [Jelmer Vernooij] and [Beast Glatisant]. [aiohttp @ PyPI]: https://pypi.org/p/aiohttp [`pip install aiohttp >= 3.7.4`]: https://pypi.org/project/aiohttp/3.7.4/ [GHSA-v6wp-4m6f-gcjg]: https://github.com/aio-libs/aiohttp/security/advisories/GHSA-v6wp-4m6f-gcjg [OWASP page on open redirects]: https://cheatsheetseries.owasp.org/cheatsheets/Unvalidated_Redirects_and_Forwards_Cheat_Sheet.html [Jelmer Vernooij]: https://jelmer.uk [Beast Glatisant]: https://github.com/g147

Credit: security-advisories@github.com security-advisories@github.com security-advisories@github.com

Affected SoftwareAffected VersionHow to fix
debian/python-aiohttp
3.5.1-1+deb10u1
3.7.4-1
3.8.4-1
3.8.6-1
Aiohttp Project Aiohttp<3.7.4
Debian Debian Linux=10.0
Fedoraproject Fedora=33
Fedoraproject Fedora=34
Aiohttp Aiohttp<3.7.4
pip/aiohttp<3.7.4
3.7.4
redhat/python-aiohttp<3.7.4
3.7.4
<3.7.4
=10.0
=33
=34

Remedy

https://github.com/aio-libs/aiohttp/commit/2545222a3853e31ace15d87ae0e2effb7da0c96b

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Frequently Asked Questions

  • What is the impact of CVE-2021-21330?

    The impact of CVE-2021-21330 is an open redirect vulnerability that could redirect the browser to a different website.

  • How does CVE-2021-21330 affect aiohttp-based web servers?

    CVE-2021-21330 affects aiohttp-based web servers by allowing a maliciously crafted link to redirect the browser to a different website.

  • Which middleware in aiohttp is responsible for the vulnerability?

    The vulnerability in aiohttp is caused by a bug in the `aiohttp.web_middlewares.normalize_path_middleware` middleware.

  • What is the severity of CVE-2021-21330?

    The severity of CVE-2021-21330 is medium with a CVSSv3 score of 6.1.

  • How do I fix CVE-2021-21330 in aiohttp?

    To fix CVE-2021-21330 in aiohttp, update to version 3.7.4.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2024 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203