glibc: remove version 2.19
Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com> Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Vicente Olivert Riera
Peter Korsgaard
parent
d15b3df04e
commit
775c0e011b
@ -1,173 +0,0 @@
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Patch from https://bugzilla.redhat.com/show_bug.cgi?id=1157689
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Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
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WARNING !!! WARNING !!! WARNING !!! WARNING !!! WARNING !!! WARNING !!!
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EMBARGOED !!! EMBARGOED !!! EMARGOED !!! EMBARGOED !!! EMBARGOED !!!
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SECURITY !!! SECURITY !!! SECURITY !!! SECURITY !!! SECURITY !!!
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CVE-2014-7817:
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The function wordexp() fails to properly handle the WRDE_NOCMD
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flag when processing arithmetic inputs in the form of "$((... ``))"
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where "..." can be anything valid. The backticks in the arithmetic
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epxression are evaluated by in a shell even if WRDE_NOCMD forbade
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command substitution. This allows an attacker to attempt to pass
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dangerous commands via constructs of the above form, and bypass
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the WRDE_NOCMD flag. This patch fixes this by checking for WRDE_NOCMD
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in parse_arith(). The patch also hardens parse_backticks() and
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parse_comm() to check for WRDE_NOCMD flag and return an error instead
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of ever running a shell.
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We expand the testsuite and add 3 new regression tests of roughtly
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the same form but with a couple of nested levels.
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On top of the 3 new tests we add fork validation to the WRDE_NOCMD
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testing. If any forks are detected during the execution of a wordexp()
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call with WRDE_NOCMD, the test is marked as failed. This is slightly
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heuristic since vfork might be used, but it provides a higher level
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of assurance that no shells were executed as part of command substitution
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with WRDE_NOCMD in effect. In addition it doesn't require libpthread or
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libdl, instead we use the public implementation namespace function
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__register_atfork (already part of the public ABI for libpthread).
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Tested on x86_64 with no regressions.
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2014-10-27 Carlos O'Donell <carlos@redhat.com>
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* wordexp-test.c (__dso_handle): Add prototype.
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(__register_atfork): Likewise.
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(__app_register_atfork): New function.
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(registered_forks): New global.
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(register_fork): New function.
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(test_case): Add 3 new tests for WRDE_CMDSUB.
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(main): Call __app_register_atfork.
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(testit): If WRDE_NOCMD set registered_forks to zero, run test, and
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if fork count is non-zero fail the test.
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* posix/wordexp.c (parse_arith): Return WRDE_NOCMD if WRDE_NOCMD flag
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is set and parsing '`'.
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(parse_comm): Return WRDE_NOCMD if WRDE_NOCMD flag is set.
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(parse_backtick): Return WRDE_NOCMD if WRDE_NOCMD flag is set and
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parsing '`'.
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diff --git a/posix/wordexp-test.c b/posix/wordexp-test.c
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index 4957006..5ce2a1b 100644
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--- a/posix/wordexp-test.c
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+++ b/posix/wordexp-test.c
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@@ -27,6 +27,25 @@
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#define IFS " \n\t"
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+extern void *__dso_handle __attribute__ ((__weak__, __visibility__ ("hidden")));
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+extern int __register_atfork (void (*) (void), void (*) (void), void (*) (void), void *);
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+
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+static int __app_register_atfork (void (*prepare) (void), void (*parent) (void), void (*child) (void))
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+{
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+ return __register_atfork (prepare, parent, child,
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+ &__dso_handle == NULL ? NULL : __dso_handle);
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+}
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+
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+/* Number of forks seen. */
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+static int registered_forks;
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+
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+/* For each fork increment the fork count. */
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+static void
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+register_fork (void)
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+{
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+ registered_forks++;
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+}
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+
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struct test_case_struct
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{
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int retval;
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@@ -206,6 +225,12 @@ struct test_case_struct
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{ WRDE_SYNTAX, NULL, "$((2+))", 0, 0, { NULL, }, IFS },
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{ WRDE_SYNTAX, NULL, "`", 0, 0, { NULL, }, IFS },
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{ WRDE_SYNTAX, NULL, "$((010+4+))", 0, 0, { NULL }, IFS },
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+ /* Test for CVE-2014-7817. We test 3 combinations of command
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+ substitution inside an arithmetic expression to make sure that
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+ no commands are executed and error is returned. */
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+ { WRDE_CMDSUB, NULL, "$((`echo 1`))", WRDE_NOCMD, 0, { NULL, }, IFS },
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+ { WRDE_CMDSUB, NULL, "$((1+`echo 1`))", WRDE_NOCMD, 0, { NULL, }, IFS },
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+ { WRDE_CMDSUB, NULL, "$((1+$((`echo 1`))))", WRDE_NOCMD, 0, { NULL, }, IFS },
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{ -1, NULL, NULL, 0, 0, { NULL, }, IFS },
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};
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@@ -258,6 +283,15 @@ main (int argc, char *argv[])
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return -1;
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}
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+ /* If we are not allowed to do command substitution, we install
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+ fork handlers to verify that no forks happened. No forks should
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+ happen at all if command substitution is disabled. */
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+ if (__app_register_atfork (register_fork, NULL, NULL) != 0)
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+ {
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+ printf ("Failed to register fork handler.\n");
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+ return -1;
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+ }
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+
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for (test = 0; test_case[test].retval != -1; test++)
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if (testit (&test_case[test]))
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++fail;
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@@ -367,6 +401,9 @@ testit (struct test_case_struct *tc)
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printf ("Test %d (%s): ", ++tests, tc->words);
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+ if (tc->flags & WRDE_NOCMD)
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+ registered_forks = 0;
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+
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if (tc->flags & WRDE_APPEND)
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{
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/* initial wordexp() call, to be appended to */
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@@ -378,6 +415,13 @@ testit (struct test_case_struct *tc)
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}
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retval = wordexp (tc->words, &we, tc->flags);
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+ if ((tc->flags & WRDE_NOCMD)
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+ && (registered_forks > 0))
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+ {
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+ printf ("FAILED fork called for WRDE_NOCMD\n");
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+ return 1;
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+ }
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+
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if (tc->flags & WRDE_DOOFFS)
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start_offs = sav_we.we_offs;
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diff --git a/posix/wordexp.c b/posix/wordexp.c
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index b6b65dd..d6a158f 100644
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--- a/posix/wordexp.c
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+++ b/posix/wordexp.c
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@@ -693,6 +693,12 @@ parse_arith (char **word, size_t *word_length, size_t *max_length,
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break;
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case '`':
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+ if (flags & WRDE_NOCMD)
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+ {
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+ free (expr);
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+ return WRDE_NOCMD;
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+ }
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+
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(*offset)++;
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error = parse_backtick (&expr, &expr_length, &expr_maxlen,
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words, offset, flags, NULL, NULL, NULL);
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@@ -1144,6 +1150,10 @@ parse_comm (char **word, size_t *word_length, size_t *max_length,
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size_t comm_maxlen;
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char *comm = w_newword (&comm_length, &comm_maxlen);
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+ /* Do nothing if command substitution should not succeed. */
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+ if (flags & WRDE_NOCMD)
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+ return WRDE_CMDSUB;
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+
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for (; words[*offset]; ++(*offset))
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{
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switch (words[*offset])
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@@ -2121,6 +2131,9 @@ parse_backtick (char **word, size_t *word_length, size_t *max_length,
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switch (words[*offset])
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{
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case '`':
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+ if (flags & WRDE_NOCMD)
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+ return WRDE_NOCMD;
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+
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/* Go -- give the script to the shell */
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error = exec_comm (comm, word, word_length, max_length, flags,
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pwordexp, ifs, ifs_white);
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@ -1,141 +0,0 @@
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Backport from https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commit;h=41488498b6
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See https://bugzilla.redhat.com/show_bug.cgi?id=1135841
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Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
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diff -Nura glibc-2.19.orig/iconvdata/ibm1364.c glibc-2.19/iconvdata/ibm1364.c
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--- glibc-2.19.orig/iconvdata/ibm1364.c 2015-01-08 16:02:54.370960818 -0300
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+++ glibc-2.19/iconvdata/ibm1364.c 2015-01-08 16:02:57.607688939 -0300
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@@ -220,7 +220,8 @@
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++rp2; \
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\
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uint32_t res; \
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- if (__builtin_expect (ch < rp2->start, 0) \
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+ if (__builtin_expect (rp2->start == 0xffff, 0) \
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+ || __builtin_expect (ch < rp2->start, 0) \
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|| (res = DB_TO_UCS4[ch + rp2->idx], \
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__builtin_expect (res, L'\1') == L'\0' && ch != '\0')) \
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{ \
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diff -Nura glibc-2.19.orig/iconvdata/ibm932.c glibc-2.19/iconvdata/ibm932.c
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--- glibc-2.19.orig/iconvdata/ibm932.c 2015-01-08 16:02:54.357953873 -0300
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+++ glibc-2.19/iconvdata/ibm932.c 2015-01-08 16:02:57.608689473 -0300
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@@ -73,11 +73,12 @@
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} \
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\
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ch = (ch * 0x100) + inptr[1]; \
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+ /* ch was less than 0xfd. */ \
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+ assert (ch < 0xfd00); \
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while (ch > rp2->end) \
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++rp2; \
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\
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- if (__builtin_expect (rp2 == NULL, 0) \
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- || __builtin_expect (ch < rp2->start, 0) \
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+ if (__builtin_expect (ch < rp2->start, 0) \
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|| (res = __ibm932db_to_ucs4[ch + rp2->idx], \
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__builtin_expect (res, '\1') == 0 && ch !=0)) \
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{ \
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diff -Nura glibc-2.19.orig/iconvdata/ibm933.c glibc-2.19/iconvdata/ibm933.c
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--- glibc-2.19.orig/iconvdata/ibm933.c 2015-01-08 16:02:54.369960284 -0300
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+++ glibc-2.19/iconvdata/ibm933.c 2015-01-08 16:02:57.608689473 -0300
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@@ -161,7 +161,7 @@
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while (ch > rp2->end) \
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++rp2; \
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\
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- if (__builtin_expect (rp2 == NULL, 0) \
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+ if (__builtin_expect (rp2->start == 0xffff, 0) \
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|| __builtin_expect (ch < rp2->start, 0) \
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|| (res = __ibm933db_to_ucs4[ch + rp2->idx], \
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__builtin_expect (res, L'\1') == L'\0' && ch != '\0')) \
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diff -Nura glibc-2.19.orig/iconvdata/ibm935.c glibc-2.19/iconvdata/ibm935.c
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--- glibc-2.19.orig/iconvdata/ibm935.c 2015-01-08 16:02:54.373962421 -0300
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+++ glibc-2.19/iconvdata/ibm935.c 2015-01-08 16:02:57.608689473 -0300
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@@ -161,7 +161,7 @@
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while (ch > rp2->end) \
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++rp2; \
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\
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- if (__builtin_expect (rp2 == NULL, 0) \
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+ if (__builtin_expect (rp2->start == 0xffff, 0) \
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|| __builtin_expect (ch < rp2->start, 0) \
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|| (res = __ibm935db_to_ucs4[ch + rp2->idx], \
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__builtin_expect (res, L'\1') == L'\0' && ch != '\0')) \
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diff -Nura glibc-2.19.orig/iconvdata/ibm937.c glibc-2.19/iconvdata/ibm937.c
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--- glibc-2.19.orig/iconvdata/ibm937.c 2015-01-08 16:02:54.368959749 -0300
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+++ glibc-2.19/iconvdata/ibm937.c 2015-01-08 16:02:57.608689473 -0300
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@@ -161,7 +161,7 @@
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while (ch > rp2->end) \
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++rp2; \
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\
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- if (__builtin_expect (rp2 == NULL, 0) \
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+ if (__builtin_expect (rp2->start == 0xffff, 0) \
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|| __builtin_expect (ch < rp2->start, 0) \
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|| (res = __ibm937db_to_ucs4[ch + rp2->idx], \
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__builtin_expect (res, L'\1') == L'\0' && ch != '\0')) \
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diff -Nura glibc-2.19.orig/iconvdata/ibm939.c glibc-2.19/iconvdata/ibm939.c
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--- glibc-2.19.orig/iconvdata/ibm939.c 2015-01-08 16:02:54.369960284 -0300
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+++ glibc-2.19/iconvdata/ibm939.c 2015-01-08 16:02:57.609690007 -0300
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@@ -161,7 +161,7 @@
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while (ch > rp2->end) \
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++rp2; \
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\
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- if (__builtin_expect (rp2 == NULL, 0) \
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+ if (__builtin_expect (rp2->start == 0xffff, 0) \
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|| __builtin_expect (ch < rp2->start, 0) \
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|| (res = __ibm939db_to_ucs4[ch + rp2->idx], \
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__builtin_expect (res, L'\1') == L'\0' && ch != '\0')) \
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diff -Nura glibc-2.19.orig/iconvdata/ibm943.c glibc-2.19/iconvdata/ibm943.c
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--- glibc-2.19.orig/iconvdata/ibm943.c 2015-01-08 16:02:54.370960818 -0300
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+++ glibc-2.19/iconvdata/ibm943.c 2015-01-08 16:02:57.609690007 -0300
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@@ -74,11 +74,12 @@
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} \
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\
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ch = (ch * 0x100) + inptr[1]; \
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+ /* ch was less than 0xfd. */ \
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+ assert (ch < 0xfd00); \
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while (ch > rp2->end) \
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++rp2; \
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\
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- if (__builtin_expect (rp2 == NULL, 0) \
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- || __builtin_expect (ch < rp2->start, 0) \
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+ if (__builtin_expect (ch < rp2->start, 0) \
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|| (res = __ibm943db_to_ucs4[ch + rp2->idx], \
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__builtin_expect (res, '\1') == 0 && ch !=0)) \
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{ \
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diff -Nura glibc-2.19.orig/iconvdata/Makefile glibc-2.19/iconvdata/Makefile
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--- glibc-2.19.orig/iconvdata/Makefile 2015-01-08 16:02:54.344946929 -0300
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+++ glibc-2.19/iconvdata/Makefile 2015-01-08 16:03:21.748578005 -0300
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@@ -299,6 +299,7 @@
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$(objpfx)iconv-test.out: run-iconv-test.sh $(objpfx)gconv-modules \
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$(addprefix $(objpfx),$(modules.so)) \
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$(common-objdir)/iconv/iconv_prog TESTS
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+ iconv_modules="$(modules)" \
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$(SHELL) $< $(common-objdir) '$(test-wrapper)' > $@
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$(objpfx)tst-tables.out: tst-tables.sh $(objpfx)gconv-modules \
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diff -Nura glibc-2.19.orig/iconvdata/run-iconv-test.sh glibc-2.19/iconvdata/run-iconv-test.sh
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--- glibc-2.19.orig/iconvdata/run-iconv-test.sh 2015-01-08 16:02:54.322935176 -0300
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+++ glibc-2.19/iconvdata/run-iconv-test.sh 2015-01-08 16:02:57.609690007 -0300
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@@ -188,6 +188,24 @@
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done < TESTS2
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+# Check for crashes in decoders.
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+printf '\016\377\377\377\377\377\377\377' > $temp1
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+for from in $iconv_modules ; do
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+ echo $ac_n "test decoder $from $ac_c"
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+ PROG=`eval echo $ICONV`
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+ if $PROG < $temp1 >/dev/null 2>&1 ; then
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+ : # fall through
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+ else
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+ status=$?
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+ if test $status -gt 1 ; then
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+ echo "/FAILED"
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+ failed=1
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+ continue
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+ fi
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+ fi
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+ echo "OK"
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+done
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+
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exit $failed
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# Local Variables:
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# mode:shell-script
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@ -1,24 +0,0 @@
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Fix CVE-2014-9402 - denial of service in getnetbyname function.
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Backport from https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=11e3417af6e354f1942c68a271ae51e892b2814d
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See https://bugzilla.redhat.com/show_bug.cgi?id=1175369
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Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
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diff --git a/resolv/nss_dns/dns-network.c b/resolv/nss_dns/dns-network.c
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index 0a77c8b..08cf0a6 100644
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--- a/resolv/nss_dns/dns-network.c
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+++ b/resolv/nss_dns/dns-network.c
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@@ -398,8 +398,8 @@ getanswer_r (const querybuf *answer, int anslen, struct netent *result,
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case BYNAME:
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{
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- char **ap = result->n_aliases++;
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- while (*ap != NULL)
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+ char **ap;
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+ for (ap = result->n_aliases; *ap != NULL; ++ap)
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{
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/* Check each alias name for being of the forms:
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4.3.2.1.in-addr.arpa = net 1.2.3.4
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--
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1.7.1
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@ -32,9 +32,6 @@ choice
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prompt "glibc version"
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default BR2_GLIBC_VERSION_2_20
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config BR2_GLIBC_VERSION_2_19
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bool "2.19"
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config BR2_GLIBC_VERSION_2_20
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bool "2.20"
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@ -4,6 +4,5 @@ md5 b395b021422a027d89884992e91734fc eglibc-2.18-svnr23787.tar.bz2
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sha1 224d9e655e8f0ad04ffde47b97a11c64e2255b56 eglibc-2.18-svnr23787.tar.bz2
|
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md5 197836c2ba42fb146e971222647198dd eglibc-2.19-svnr25243.tar.bz2
|
||||
sha1 8013c1935b46fd50d2d1fbfad3b0af362b75fb28 eglibc-2.19-svnr25243.tar.bz2
|
||||
sha256 2d3997f588401ea095a0b27227b1d50cdfdd416236f6567b564549d3b46ea2a2 glibc-2.19.tar.xz
|
||||
sha256 f84b6d42aecc288d593c397b0a3d02260a33ee686bce0c634eb9b32798f36ba5 glibc-2.20.tar.xz
|
||||
sha256 aeeb362437965a5d3f40b151094ca79def04a115bd363fdd4a9a0c69482923b8 glibc-2.21.tar.xz
|
||||
|
||||
Loading…
Reference in New Issue
Block a user