CVE-2018-20482

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).

Affected products

Alt Linux, Gnu Tar, Linuxmint, Suse, Ubuntu

Gnu Tar

≤ 1.30

CVSS 3.1

4.7 MEDIUM

EPSS

0.5% (42th percentile)

Weakness

CWE-835

NVD status

Modified

Published

2018-12-26