National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-20482 Detail

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).

Source:  MITRE
Description Last Modified:  12/26/2018

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Hyperlink Resource
http://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414eca1a49294bff454
http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.html
http://www.securityfocus.com/bid/106354
https://lists.debian.org/debian-lts-announce/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

Technical Details

Vulnerability Type (View All)

Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-20482
NVD Published Date:
12/26/2018
NVD Last Modified:
01/03/2019