CVE ID:	CVE-2018-20482
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).
Test IDs:	1.3.6.1.4.1.25623.1.1.2.2020.1068   1.3.6.1.4.1.25623.1.1.2.2019.1346   1.3.6.1.4.1.25623.1.1.2.2019.1129   1.3.6.1.4.1.25623.1.0.891623   1.3.6.1.4.1.25623.1.1.4.2022.1548.1   1.3.6.1.4.1.25623.1.1.10.2019.0034   1.3.6.1.4.1.25623.1.1.2.2019.1154   1.3.6.1.4.1.25623.1.1.2.2019.1262   1.3.6.1.4.1.25623.1.0.892830   1.3.6.1.4.1.25623.1.1.2.2020.1035
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2018-20482 BugTraq ID: 106354 http://www.securityfocus.com/bid/106354 https://security.gentoo.org/glsa/201903-05 http://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414eca1a49294bff454 http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.html https://news.ycombinator.com/item?id=18745431 https://twitter.com/thatcks/status/1076166645708668928 https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug https://lists.debian.org/debian-lts-announce/2018/12/msg00023.html https://lists.debian.org/debian-lts-announce/2021/11/msg00025.html SuSE Security Announcement: openSUSE-SU-2019:1237 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.html