DEBIAN-CVE-2021-4209

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Source
https://security-tracker.debian.org/tracker/CVE-2021-4209
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-4209.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2021-4209
Upstream
Published
2022-08-24T16:15:09.927Z
Modified
2025-11-20T10:15:10.874589Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.

References

Affected packages

Debian:11 / gnutls28

Package

Name
gnutls28
Purl
pkg:deb/debian/gnutls28?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.7.1-5+deb11u1

Affected versions

3.*

3.7.1-5

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / gnutls28

Package

Name
gnutls28
Purl
pkg:deb/debian/gnutls28?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.7.3-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / gnutls28

Package

Name
gnutls28
Purl
pkg:deb/debian/gnutls28?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.7.3-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / gnutls28

Package

Name
gnutls28
Purl
pkg:deb/debian/gnutls28?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.7.3-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}