CVE-2018-20482
בינונית 4.7
תיאור (מקור, אנגלית)
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).
מדדים
- CVSS 3.1
-
4.7 (MEDIUM)
מקור הציון: NVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — סבירות ניצול
- 1% (אחוזון 000) נכון ל-18/10/2026
- CWE
- CWE-835
מוצרים מושפעים
gnu: tar; debian: debian linux; opensuse: leap
קישורים
- http://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414ec… PatchThird Party Advisory
- https://twitter.com/thatcks/status/1076166645708668928 PatchThird Party Advisory
- https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug PatchThird Party Advisory
- http://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414ec… PatchThird Party Advisory
- https://twitter.com/thatcks/status/1076166645708668928 PatchThird Party Advisory
- https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug PatchThird Party Advisory
- https://news.ycombinator.com/item?id=18745431 ExploitThird Party Advisory
- https://news.ycombinator.com/item?id=18745431 ExploitThird Party Advisory
- http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.html Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.html Mailing ListThird Party Advisory