CVE-2018-20482
Medium
Description
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).
SeverityMedium
CVSS4.7
Exploit probability—
Product
Gnu Tar
PublishedDec 26, 2018
First seenDec 26, 2018
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gnu tar | v ≤ 1.30 | — |
| debian debian_linux | 8.0, 9.0 | — |
| opensuse leap | 15.0 | — |
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