Author: aurel32
Date: 2015-01-31 15:37:22 +0000 (Sat, 31 Jan 2015)
New Revision: 6345
Added:
glibc-package/trunk/debian/patches/any/cvs-wordexp.diff
Log:
Add patch missing in previous commit
Added: glibc-package/trunk/debian/patches/any/cvs-wordexp.diff
===================================================================
--- glibc-package/trunk/debian/patches/any/cvs-wordexp.diff
(rev 0)
+++ glibc-package/trunk/debian/patches/any/cvs-wordexp.diff 2015-01-31
15:37:22 UTC (rev 6345)
@@ -0,0 +1,149 @@
+2014-11-19 Carlos O'Donell <[email protected]>
+ Florian Weimer <[email protected]>
+ Joseph Myers <[email protected]>
+ Adam Conrad <[email protected]>
+ Andreas Schwab <[email protected]>
+ Brooks <[email protected]>
+
+ [BZ #17625]
+ * wordexp-test.c (__dso_handle): Add prototype.
+ (__register_atfork): Likewise.
+ (__app_register_atfork): New function.
+ (registered_forks): New global.
+ (register_fork): New function.
+ (test_case): Add 3 new tests for WRDE_CMDSUB.
+ (main): Call __app_register_atfork.
+ (testit): If WRDE_NOCMD set registered_forks to zero, run test, and if
+ fork count is non-zero fail the test.
+ * posix/wordexp.c (exec_comm): Return WRDE_CMDSUB if WRDE_NOCMD flag
+ is set.
+ (parse_dollars): Remove check for WRDE_NOCMD.
+ (parse_dquote): Likewise.
+
+--- a/posix/wordexp-test.c
++++ b/posix/wordexp-test.c
+@@ -27,6 +27,25 @@
+
+ #define IFS " \n\t"
+
++extern void *__dso_handle __attribute__ ((__weak__, __visibility__
("hidden")));
++extern int __register_atfork (void (*) (void), void (*) (void), void (*)
(void), void *);
++
++static int __app_register_atfork (void (*prepare) (void), void (*parent)
(void), void (*child) (void))
++{
++ return __register_atfork (prepare, parent, child,
++ &__dso_handle == NULL ? NULL : __dso_handle);
++}
++
++/* Number of forks seen. */
++static int registered_forks;
++
++/* For each fork increment the fork count. */
++static void
++register_fork (void)
++{
++ registered_forks++;
++}
++
+ struct test_case_struct
+ {
+ int retval;
+@@ -206,6 +225,12 @@ struct test_case_struct
+ { WRDE_SYNTAX, NULL, "$((2+))", 0, 0, { NULL, }, IFS },
+ { WRDE_SYNTAX, NULL, "`", 0, 0, { NULL, }, IFS },
+ { WRDE_SYNTAX, NULL, "$((010+4+))", 0, 0, { NULL }, IFS },
++ /* Test for CVE-2014-7817. We test 3 combinations of command
++ substitution inside an arithmetic expression to make sure that
++ no commands are executed and error is returned. */
++ { WRDE_CMDSUB, NULL, "$((`echo 1`))", WRDE_NOCMD, 0, { NULL, }, IFS },
++ { WRDE_CMDSUB, NULL, "$((1+`echo 1`))", WRDE_NOCMD, 0, { NULL, }, IFS },
++ { WRDE_CMDSUB, NULL, "$((1+$((`echo 1`))))", WRDE_NOCMD, 0, { NULL, },
IFS },
+
+ { -1, NULL, NULL, 0, 0, { NULL, }, IFS },
+ };
+@@ -258,6 +283,15 @@ main (int argc, char *argv[])
+ return -1;
+ }
+
++ /* If we are not allowed to do command substitution, we install
++ fork handlers to verify that no forks happened. No forks should
++ happen at all if command substitution is disabled. */
++ if (__app_register_atfork (register_fork, NULL, NULL) != 0)
++ {
++ printf ("Failed to register fork handler.\n");
++ return -1;
++ }
++
+ for (test = 0; test_case[test].retval != -1; test++)
+ if (testit (&test_case[test]))
+ ++fail;
+@@ -367,6 +401,9 @@ testit (struct test_case_struct *tc)
+
+ printf ("Test %d (%s): ", ++tests, tc->words);
+
++ if (tc->flags & WRDE_NOCMD)
++ registered_forks = 0;
++
+ if (tc->flags & WRDE_APPEND)
+ {
+ /* initial wordexp() call, to be appended to */
+@@ -378,6 +415,13 @@ testit (struct test_case_struct *tc)
+ }
+ retval = wordexp (tc->words, &we, tc->flags);
+
++ if ((tc->flags & WRDE_NOCMD)
++ && (registered_forks > 0))
++ {
++ printf ("FAILED fork called for WRDE_NOCMD\n");
++ return 1;
++ }
++
+ if (tc->flags & WRDE_DOOFFS)
+ start_offs = sav_we.we_offs;
+
+--- a/posix/wordexp.c
++++ b/posix/wordexp.c
+@@ -893,6 +893,10 @@ exec_comm (char *comm, char **word, size_t *word_length,
size_t *max_length,
+ pid_t pid;
+ int noexec = 0;
+
++ /* Do nothing if command substitution should not succeed. */
++ if (flags & WRDE_NOCMD)
++ return WRDE_CMDSUB;
++
+ /* Don't fork() unless necessary */
+ if (!comm || !*comm)
+ return 0;
+@@ -2082,9 +2086,6 @@ parse_dollars (char **word, size_t *word_length, size_t
*max_length,
+ }
+ }
+
+- if (flags & WRDE_NOCMD)
+- return WRDE_CMDSUB;
+-
+ (*offset) += 2;
+ return parse_comm (word, word_length, max_length, words, offset, flags,
+ quoted? NULL : pwordexp, ifs, ifs_white);
+@@ -2196,9 +2197,6 @@ parse_dquote (char **word, size_t *word_length, size_t
*max_length,
+ break;
+
+ case '`':
+- if (flags & WRDE_NOCMD)
+- return WRDE_CMDSUB;
+-
+ ++(*offset);
+ error = parse_backtick (word, word_length, max_length, words,
+ offset, flags, NULL, NULL, NULL);
+@@ -2357,12 +2355,6 @@ wordexp (const char *words, wordexp_t *pwordexp, int
flags)
+ break;
+
+ case '`':
+- if (flags & WRDE_NOCMD)
+- {
+- error = WRDE_CMDSUB;
+- goto do_error;
+- }
+-
+ ++words_offset;
+ error = parse_backtick (&word, &word_length, &max_length, words,
+ &words_offset, flags, pwordexp, ifs,
--
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