ALPINE-CVE-2021-3671

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2021-3671
Published: 12 Oct 2021, 18:15
Last modified:08 Jul 2026, 04:31

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
3.1 (osv_alpine)
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
08 Jul 2026, 04:31
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

  • alpine•heimdal

    < 7.7.1-r0 | < 7.7.1-r0 | < 7.7.1-r0 | < 7.7.1-r0 | < 7.7.1-r0 | < 7.7.1-r0 | < 7.7.1-r0 | < 7.7.1-r0 | < 7.7.1-r0 | < 7.7.1-r0 | < 7.7.1-r0

  • alpine•samba

    < 4.14.8-r0 | < 4.15.0-r0 | < 4.15.0-r0 | < 4.15.0-r0 | < 4.15.0-r0 | < 4.15.0-r0 | < 4.15.0-r0 | < 4.15.0-r0 | < 4.15.0-r0 | < 4.15.0-r0 | < 4.15.0-r0 | ≥ 4.14.0, < 4.14.8-r0 | ≥ 4.14.0, < 4.15.0-r0 | ≥ 4.14.0, < 4.15.0-r0 | ≥ 4.14.0, < 4.15.0-r0 | ≥ 4.14.0, < 4.15.0-r0 | ≥ 4.14.0, < 4.15.0-r0 | ≥ 4.14.0, < 4.15.0-r0 | ≥ 4.14.0, < 4.15.0-r0 | ≥ 4.14.0, < 4.15.0-r0 | ≥ 4.14.0, < 4.15.0-r0 | ≥ 4.14.0, < 4.15.0-r0

References (1)