CVE-2021-40818: Buffer Overflow
First published: Wed Sep 08 2021(Updated: )
scheme/webauthn.c in Glewlwyd SSO server through 2.5.3 has a buffer overflow during FIDO2 signature validation in webauthn registration.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Glewlwyd Sso Server Project Glewlwyd Sso Server | <=2.5.3 |
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.
Reference Links
Frequently Asked Questions
What is CVE-2021-40818?
CVE-2021-40818 is a vulnerability in Glewlwyd SSO server through version 2.5.3 that allows for a buffer overflow during FIDO2 signature validation in webauthn registration.
How severe is CVE-2021-40818?
CVE-2021-40818 has a severity of 9.8 (critical).
What software is affected by CVE-2021-40818?
Glewlwyd SSO server through version 2.5.3 is affected by CVE-2021-40818.
How can I fix CVE-2021-40818?
The recommended fix for CVE-2021-40818 is to update Glewlwyd SSO server to a version higher than 2.5.3.
Where can I find more information about CVE-2021-40818?
More information about CVE-2021-40818 can be found at the following references: [link1](https://bugs.debian.org/993867), [link2](https://github.com/babelouest/glewlwyd/commit/0efd112bb62f566877750ad62ee828bff579b4e2).
- collector/nvd-index
- agent/author
- agent/severity
- agent/type
- agent/description
- agent/softwarecombine
- agent/first-publish-date
- agent/last-modified-date
- agent/references
- agent/event
- agent/remedy
- agent/tags
- agent/weakness
- collector/mitre-cve
- source/MITRE
- vendor/glewlwyd sso server project
- canonical/glewlwyd sso server project glewlwyd sso server
- version/glewlwyd sso server project glewlwyd sso server/2.5.3