binutils: CVE-2017-9753_and_CVE-2017-9754

Source: binutils-gdb.git
MR: 73958, 73945
Type: Security Fix
Disposition: Backport from binutils-2_29
ChangeID: a39fdc82900af3f5d6ae396c913ac902f4ef7f60
Description:

    Fix seg-faults in objdump when disassembling a corrupt versados binary.

        PR binutils/21591
        * versados.c (versados_mkobject): Zero the allocated tdata structure.
        (process_otr): Check for an invalid offset in the otr structure.

Affects: <= 2.28
Author: Nick Clifton <nickc@redhat.com>
Signed-off-by: Thiruvadi Rajaraman <trajaraman@mvista.com>
Reviewed-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

diff --git a/meta/recipes-devtools/binutils/binutils-2.27.inc b/meta/recipes-devtools/binutils/binutils-2.27.inc
index 54fb5d61c3598885f31185ba552ff162390f5d61..2b35cb154d59d519899ffeafb8cc992f4efb4636 100644 (file)
--- a/meta/recipes-devtools/binutils/binutils-2.27.inc
+++ b/meta/recipes-devtools/binutils/binutils-2.27.inc
@@ -85,6 +85,7 @@ SRC_URI = "\
      file://CVE-2017-9747.patch \
      file://CVE-2017-9750.patch \
      file://CVE-2017-9752.patch \
+     file://CVE-2017-9753_9754.patch \
 "
 S  = "${WORKDIR}/git"
 

diff --git a/meta/recipes-devtools/binutils/binutils/CVE-2017-9753_9754.patch b/meta/recipes-devtools/binutils/binutils/CVE-2017-9753_9754.patch
new file mode 100644 (file)
index 0000000..fe1f9a1
--- /dev/null
+++ b/meta/recipes-devtools/binutils/binutils/CVE-2017-9753_9754.patch
@@ -0,0 +1,76 @@
+commit 04f963fd489cae724a60140e13984415c205f4ac
+Author: Nick Clifton <nickc@redhat.com>
+Date:   Wed Jun 14 10:35:16 2017 +0100
+
+    Fix seg-faults in objdump when disassembling a corrupt versados binary.
+    
+       PR binutils/21591
+       * versados.c (versados_mkobject): Zero the allocated tdata structure.
+       (process_otr): Check for an invalid offset in the otr structure.
+
+Upstream-Status: Backport
+
+CVE: CVE-2017-9753 and CVE-2017-9754
+Signed-off-by: Thiruvadi Rajaraman <trajaraman@mvista.com>
+
+Index: git/bfd/versados.c
+===================================================================
+--- git.orig/bfd/versados.c    2017-09-21 15:08:34.445197987 +0530
++++ git/bfd/versados.c 2017-09-21 15:08:34.429197878 +0530
+@@ -149,7 +149,7 @@
+   if (abfd->tdata.versados_data == NULL)
+     {
+       bfd_size_type amt = sizeof (tdata_type);
+-      tdata_type *tdata = bfd_alloc (abfd, amt);
++      tdata_type *tdata = bfd_zalloc (abfd, amt);
+ 
+       if (tdata == NULL)
+       return FALSE;
+@@ -344,13 +344,13 @@
+ };
+ 
+ static int
+-get_offset (int len, unsigned char *ptr)
++get_offset (unsigned int len, unsigned char *ptr)
+ {
+   int val = 0;
+ 
+   if (len)
+     {
+-      int i;
++      unsigned int i;
+ 
+       val = *ptr++;
+       if (val & 0x80)
+@@ -393,9 +393,13 @@
+         int flag = *srcp++;
+         int esdids = (flag >> 5) & 0x7;
+         int sizeinwords = ((flag >> 3) & 1) ? 2 : 1;
+-        int offsetlen = flag & 0x7;
++        unsigned int offsetlen = flag & 0x7;
+         int j;
+ 
++        /* PR 21591: Check for invalid lengths.  */
++        if (srcp + esdids + offsetlen >= endp)
++          return;
++
+         if (esdids == 0)
+           {
+             /* A zero esdid means the new pc is the offset given.  */
+Index: git/bfd/ChangeLog
+===================================================================
+--- git.orig/bfd/ChangeLog     2017-09-21 15:08:34.445197987 +0530
++++ git/bfd/ChangeLog  2017-09-21 15:08:34.429197878 +0530
+@@ -90,6 +90,12 @@
+       (_bfd_vms_slurp_etir): Add checks for attempts to read beyond the
+       end of etir record.
+ 
++2017-06-14  Nick Clifton  <nickc@redhat.com>
++
++      PR binutils/21591
++      * versados.c (versados_mkobject): Zero the allocated tdata structure.
++      (process_otr): Check for an invalid offset in the otr structure.
++
+ 2017-04-29  Alan Modra  <amodra@gmail.com>
+ 
+        PR 21432