VDB
ALPINE-CVE-2018-20482
ALPINE-CVE-2018-20482
PUBLISHED
CVSS 4.699999809265137 MEDIUM
GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local users to cause a denial of service (infinite read loop in sparse_dump_region in sparse.c) by modifying a file that is supposed to be archived by a different user's process (e.g., a system backup running as root).
Risk Scores
CVSS 3.1
4.699999809265137
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Alpine:v3.6 | tar | 1.22-r1, 1.29-r1, 1.29-r0 |
| Alpine:v3.24 | tar | 0 |
| Alpine:v3.10 | tar | 1.23-r0, 1.30-r0, 1.24-r0 |
| Alpine:v3.19 | tar | 1.23-r0, 1.21-r0, 1.22-r0 |
| Alpine:v3.8 | tar | 1.26-r0, 0, 1.30-r0 |
| Alpine:v3.22 | tar | 1.22-r0, 1.22-r1, 1.23-r1 |
| Alpine:v3.15 | tar | 1.22-r1, 0, 1.30-r1 |
| Alpine:v3.14 | tar | 1.21-r0, 1.22-r1, 1.23-r0 |
| Alpine:v3.21 | tar | 1.28-r0, 0, 1.21-r0 |
| Alpine:v3.7 | tar | 1.27.1-r0, 1.22-r1, 1.22-r0 |
| Alpine:v3.9 | tar | 1.22-r0, 1.24-r0, 0 |
| Alpine:v3.23 | tar | 0, 1.21-r0, 1.22-r0 |
| Alpine:v3.17 | tar | 1.21-r0, 0, 1.22-r0 |
| Alpine:v3.16 | tar | 0, 0, 1.30-r1 |
| Alpine:v3.13 | tar | 0, 0, 1.30-r1 |
| Alpine:v3.20 | tar | 1.21-r0, 0, 1.30-r1 |
| Alpine:v3.12 | tar | 1.30-r0, 1.28-r0, 1.27-r0 |
| Alpine:v3.18 | tar | 1.23-r1, 1.25-r0, 1.26-r0 |
| Alpine:v3.11 | tar | 1.24-r0, 0, 1.30-r1 |
Exploit Intelligence
- TestCommand.yaml (github-poc)
Timeline
- Dec 26, 2018 CVE Published
- Apr 30, 2026 Distribution Patch
- Jun 9, 2026 CVE Updated