39 lines
1.1 KiB
Plaintext
39 lines
1.1 KiB
Plaintext
PURPOSE of /tools/glibc/Regression/bz503723-fopen-mode-x-ignored-in-some-cases
|
|
Description: Test for bz503723 (fopen mode 'x' ignored in some cases)
|
|
Author: Petr Muller <pmuller@redhat.com>
|
|
Bug summary: fopen mode 'x' ignored in some cases
|
|
Bugzilla link: https://bugzilla.redhat.com/show_bug.cgi?id=503723
|
|
|
|
Description:
|
|
|
|
Created an attachment (id=346240)
|
|
fopen.c - test for fopen modes
|
|
|
|
Description of problem:
|
|
O_EXCL is not used if mode is "wbex", but O_EXCL is used if mode is "wbxe".
|
|
|
|
This bug can cause security vulnerabilities in software relying on this glibc extension.
|
|
|
|
Version-Release number of selected component (if applicable):
|
|
2.10.1-2, 2.9.90-3
|
|
|
|
How reproducible:
|
|
always
|
|
|
|
Steps to Reproduce:
|
|
1. compile attached C source file
|
|
2. run with options ababab wbex, and ababab wbxe
|
|
3.
|
|
|
|
Actual results:
|
|
'x' may be ignored
|
|
|
|
Expected results:
|
|
'x' not ignored
|
|
|
|
Additional info:
|
|
$ strace -eopen ./a.out ababab wbxe 2>&1 | grep ababab ; rm -f ababab
|
|
open("ababab", O_WRONLY|O_CREAT|O_EXCL|O_TRUNC|O_CLOEXEC, 0666) = 3
|
|
$ strace -eopen ./a.out ababab wbex 2>&1 | grep ababab ; rm -f ababab
|
|
open("ababab", O_WRONLY|O_CREAT|O_TRUNC|O_CLOEXEC, 0666) = 3
|