DEBIAN-CVE-2021-3671

Advisory lineage Upstream: 1 Downstream: 2
Upstream
CVE-2021-3671
Published: 12 Oct 2021, 18:15
Last modified:28 Apr 2026, 20:22

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

12 Oct 2021, 18:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:22
Last Modified
Vulnerability information updated

Description

A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Systems

  • debian•heimdal

    < 7.7.0+dfsg-2+deb11u2 | < 7.7.0+dfsg-3 | < 7.7.0+dfsg-3 | < 7.7.0+dfsg-3

  • debian•samba

    < 2:4.13.13+dfsg-1~deb11u1 | < 2:4.13.13+dfsg-1 | < 2:4.13.13+dfsg-1 | < 2:4.13.13+dfsg-1

References (1)