CVE-2018-20482
- State
- Published
- Severity
- Not scored
- Published
- Dec 26, 2018
- Updated
- Oct 14, 2026
- Reserved
- Dec 26, 2018
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).
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug
- http://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414eca1a49294bff454
- [debian-lts-announce] 20181231 [SECURITY] [DLA 1623-1] tar security updatemailing-list
- https://news.ycombinator.com/item?id=18745431
- 106354vdb-entry
- GLSA-201903-05vendor-advisory
- http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.html
- https://twitter.com/thatcks/status/1076166645708668928
- openSUSE-SU-2019:1237vendor-advisory
- [debian-lts-announce] 20211128 [SECURITY] [DLA 2830-1] tar security updatemailing-list
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
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