VDB
ALPINE-CVE-2021-3671
ALPINE-CVE-2021-3671
PUBLISHED
CVSS 6.5 MEDIUM
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.
Risk Scores
CVSS v3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.22 | heimdal | 1.6_rc2-r5, 1.2.1-r0, 1.2.1-r1 |
| Alpine:v3.21 | heimdal | 7.7.0-r8, 1.5.3-r0, 1.5.2-r8 |
| Alpine:v3.18 | samba | 3.3.5-r2, 3.5.4-r1, 3.5.3-r0 |
| Alpine:v3.21 | samba | 3.6.19-r1, 4.7.0-r0, 4.6.6-r1 |
| Alpine:v3.22 | samba | 3.5.6-r1, 3.6.13-r0, 3.5.6-r0 |
| Alpine:v3.23 | samba | 4.8.8-r0, 4.8.7-r0, 4.8.5-r0 |
| Alpine:v3.17 | samba | 4.1.1-r0, 4.4.2-r1, 4.4.3-r0 |
| Alpine:v3.20 | samba | 3.6.3-r0, 3.6.4-r0, 3.6.4-r1 |
| Alpine:v3.15 | heimdal | 1.4-r9, 0, 1.2.1-r0 |
| Alpine:v3.18 | heimdal | 7.5.0-r0, 7.5.0-r1, 7.5.0-r2 |
| Alpine:v3.14 | heimdal | 1.3.1-r1, 1.3.1-r3, 0 |
| Alpine:v3.17 | heimdal | 7.7.0-r8, 7.7.0-r7, 7.7.0-r6 |
| Alpine:v3.15 | samba | 3.5.6-r0, 3.5.4-r0, 3.5.3-r0 |
| Alpine:v3.20 | heimdal | 1.5.3-r1, 1.6_rc2-r1, 1.6_rc2-r2 |
| Alpine:v3.19 | samba | 4.8.5-r0, 4.8.8-r0, 4.8.7-r0 |
| Alpine:v3.14 | samba | 3.4.5-r0, 3.2.11-r0, 3.2.11-r1 |
| Alpine:v3.16 | samba | 0, 4.7.2-r0, 3.2.10-r0 |
| Alpine:v3.16 | heimdal | 7.7.0-r8, 7.7.0-r7, 7.7.0-r6 |
| Alpine:v3.19 | heimdal | 1.2.1-r4, 0, 7.7.0-r8 |
| Alpine:v3.23 | heimdal | 7.7.0-r7, 7.7.0-r8, 1.2.1-r0 |
Timeline
- Oct 12, 2021 CVE Published
- Dec 3, 2025 CVE Updated
- Apr 30, 2026 Distribution Patch