DEBIAN-CVE-2021-40818

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Source
https://security-tracker.debian.org/tracker/CVE-2021-40818
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-40818.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2021-40818
Upstream
Published
2021-09-08T22:15:11.383Z
Modified
2025-12-09T22:13:46.983179Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

scheme/webauthn.c in Glewlwyd SSO server through 2.5.3 has a buffer overflow during FIDO2 signature validation in webauthn registration.

References

Affected packages

Debian:11 / glewlwyd

Package

Name
glewlwyd
Purl
pkg:deb/debian/glewlwyd?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.5.2-2+deb11u1

Affected versions

2.*
2.5.2-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-40818.json"

Debian:12 / glewlwyd

Package

Name
glewlwyd
Purl
pkg:deb/debian/glewlwyd?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.5.2-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-40818.json"

Debian:13 / glewlwyd

Package

Name
glewlwyd
Purl
pkg:deb/debian/glewlwyd?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.5.2-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-40818.json"