ALT-PU-2019-1004-1
Closed vulnerabilities
Published: 2018-12-26
BDU:2019-01641
Уязвимость фунции sparse_dump_region архиватора GNU Tar, связанная с чтением за границами буфера, позволяющая нарушителю вызвать отказ в обслуживании
Severity: MEDIUM (4.7)
Vector: AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
References:
Published: 2018-12-26
Modified: 2024-11-21
Modified: 2024-11-21
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).
Severity: MEDIUM (4.7)
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
References:
- http://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414eca1a49294bff454
- http://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414eca1a49294bff454
- http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.html
- http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.html
- openSUSE-SU-2019:1237
- openSUSE-SU-2019:1237
- 106354
- 106354
- [debian-lts-announce] 20181231 [SECURITY] [DLA 1623-1] tar security update
- [debian-lts-announce] 20181231 [SECURITY] [DLA 1623-1] tar security update
- [debian-lts-announce] 20211128 [SECURITY] [DLA 2830-1] tar security update
- [debian-lts-announce] 20211128 [SECURITY] [DLA 2830-1] tar security update
- https://news.ycombinator.com/item?id=18745431
- https://news.ycombinator.com/item?id=18745431
- GLSA-201903-05
- GLSA-201903-05
- https://twitter.com/thatcks/status/1076166645708668928
- https://twitter.com/thatcks/status/1076166645708668928
- https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug
- https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug