2022-05-31 07:29:27 +00:00
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summary: Test for bz503723 (fopen mode 'x' ignored in some cases)
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description: |
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Bug summary: fopen mode 'x' ignored in some cases
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Bugzilla link: https://bugzilla.redhat.com/show_bug.cgi?id=503723
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Description:
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Created an attachment (id=346240)
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fopen.c - test for fopen modes
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Description of problem:
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O_EXCL is not used if mode is "wbex", but O_EXCL is used if mode is "wbxe".
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This bug can cause security vulnerabilities in software relying on this glibc extension.
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Version-Release number of selected component (if applicable):
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2.10.1-2, 2.9.90-3
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How reproducible:
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always
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Steps to Reproduce:
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1. compile attached C source file
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2. run with options ababab wbex, and ababab wbxe
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3.
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Actual results:
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'x' may be ignored
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Expected results:
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'x' not ignored
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Additional info:
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$ strace -eopen ./a.out ababab wbxe 2>&1 | grep ababab ; rm -f ababab
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open("ababab", O_WRONLY|O_CREAT|O_EXCL|O_TRUNC|O_CLOEXEC, 0666) = 3
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$ strace -eopen ./a.out ababab wbex 2>&1 | grep ababab ; rm -f ababab
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open("ababab", O_WRONLY|O_CREAT|O_TRUNC|O_CLOEXEC, 0666) = 3
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contact: Petr Muller <pmuller@redhat.com>
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component:
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- glibc
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test: ./runtest.sh
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framework: shell
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recommend:
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- glibc
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- perl
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- strace
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- python
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- python3
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- python38
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2022-07-08 10:41:28 +00:00
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tag:
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- simple
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- tier1_mfranc
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- mfranc_stable
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- noEWA
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- Tier1
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- not-er15271
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- glibc-buildroot-ready
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- NoRHEL4
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2022-05-31 07:29:27 +00:00
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duration: 90m
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link:
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- relates: https://bugzilla.redhat.com/show_bug.cgi?id=503723
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extra-summary: /tools/glibc/Regression/bz503723-fopen-mode-x-ignored-in-some-cases
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extra-task: /tools/glibc/Regression/bz503723-fopen-mode-x-ignored-in-some-cases
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