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).

Link	Resource
https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug	Patch Third Party Advisory
https://twitter.com/thatcks/status/1076166645708668928	Patch Third Party Advisory
https://news.ycombinator.com/item?id=18745431	Exploit Third Party Advisory
http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.html	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/12/msg00023.html	Mailing List Third Party Advisory
http://www.securityfocus.com/bid/106354	Third Party Advisory VDB Entry
http://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414eca1a49294bff454	Patch Third Party Advisory
https://security.gentoo.org/glsa/201903-05	Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/11/msg00025.html	Mailing List Third Party Advisory

Configuration 1

cpe:2.3:a:gnu:tar:*:*:*:*:*:*:*:* cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*

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Published : 2018-12-26 06:29

Updated : 2021-11-30 07:52

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NVD link : CVE-2018-20482

Mitre link : CVE-2018-20482

No products.

CWE-835