14f00a2c7a
* tests/sparse06.at: Skip the test if genfile is unable to create sparse files. * tests/sptrcreat.at: Likewise. * tests/sptrdiff00.at: Likewise. * tests/sptrdiff01.at: Likewise.
59 lines
2.0 KiB
Plaintext
59 lines
2.0 KiB
Plaintext
# Process this file with autom4te to create testsuite. -*- Autotest -*-
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# Test suite for GNU tar.
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# Copyright 2018-2019 Free Software Foundation, Inc.
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# This file is part of GNU tar.
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# GNU tar is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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# GNU tar is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Tar up to 1.30 would loop endlessly if a sparse file had been truncated
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# while being archived (with --sparse flag).
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#
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# The bug has been assigned id CVE-2018-20482 (on the grounds that it is a
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# denial of service possibility).
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#
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# Reported by: Chris Siebenmann <cks.gnutar-01@cs.toronto.edu>
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# References: <20181226223948.781EB32008E@apps1.cs.toronto.edu>,
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# <http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.html>
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# <https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug>
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# <https://nvd.nist.gov/vuln/detail/CVE-2018-20482>
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AT_SETUP([sparse file truncated while archiving])
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AT_KEYWORDS([truncate filechange sparse sptr sptrcreat])
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AT_TAR_CHECK([
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genfile --sparse --block-size=1024 --file foo \
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0 ABCDEFGHIJ 1M ABCDEFGHIJ 10M ABCDEFGHIJ 200M ABCDEFGHIJ || AT_SKIP_TEST
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genfile --file baz
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genfile --run --checkpoint 3 --length 200m --truncate foo -- \
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tar --sparse -vcf bar foo baz
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echo Exit status: $?
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echo separator
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genfile --file foo --seek 200m --length 11575296 --pattern=zeros
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tar dvf bar | sed '/foo: Mod time differs/d'],
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[0],
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[foo
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baz
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Exit status: 1
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separator
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foo
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baz
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],
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[tar: foo: File shrank by 11575296 bytes; padding with zeros
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],
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[],[],[posix, gnu, oldgnu])
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AT_CLEANUP
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