CVE-2018-20482
tar: GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local users t...
CVE-2018-20482 is fixed in 2 products on 1 platform, first by tar 1.29b-2ubuntu0.2, released March 22, 2019. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
n/a
Low
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0053
45th percentile
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).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| tar · Ubuntu 18.04.6 LTS (bionic) | 1.29b-2ubuntu0.2 | tar 1.29b-2ubuntu0.2 | Mar 22, 2019 |
| tar-scripts · Ubuntu 18.04.6 LTS (bionic) | 1.29b-2ubuntu0.2 | tar-scripts 1.29b-2ubuntu0.2 | Mar 22, 2019 |