CVE-2021-40818
9.8 CRITICALscheme/webauthn.c in Glewlwyd SSO server through 2.5.3 has a buffer overflow during FIDO2 signature validation in webauthn registration
Published: 2021-09-08 · Last updated: 2026-06-17
Severity and scoring
- CVSS
- 9.8 CRITICAL
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-120
Affected products
| Vendor | Product |
|---|---|
| glewlwyd_sso_server_project | glewlwyd_sso_server |
Description
scheme/webauthn.c in Glewlwyd SSO server through 2.5.3 has a buffer overflow during FIDO2 signature validation in webauthn registration.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-40818
- [Other]https://bugs.debian.org/993867
- [Patch]https://github.com/babelouest/glewlwyd/commit/0efd112bb62f566877750ad62ee828bff579b4e2
- [Other]https://bugs.debian.org/993867
- [Patch]https://github.com/babelouest/glewlwyd/commit/0efd112bb62f566877750ad62ee828bff579b4e2
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