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binutils: Security Fix CVE-2017-9039

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Source: binutils-gbd.git
MR: 72742
Type: Security Fix
Disposition: Backport from git://sourceware.org/binutils-gdb.git
ChangeID: 280f36838862ea67fdcd65b162c1a4835cf924dc
Description:

Affects: <= 2.28

(From OE-Core rev: 9d5c9ad603947136e23325b123bc37c4b939d783)

Signed-off-by: Armin Kuster <akuster@mvista.com>
Reviewed-by  Jeremy Puhlman <jpuhlman@mvista.com>

Signed-off-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Armin Kuster
2017-06-21 10:28:29 -07:00
committed by Richard Purdie
parent 0251f82c13
commit 4be76c16e3
3 changed files with 130 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
meta/recipes-devtools/binutils/binutils-2.27.inc
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@@ -47,6 +47,8 @@ SRC_URI = "\
file://CVE-2017-7210.patch \
file://CVE-2017-7614.patch \
file://CVE-2017-9038.patch \
file://CVE-2017-9039.patch \
file://CVE-2017-9039_1.patch \
"
S = "${WORKDIR}/git"

72
meta/recipes-devtools/binutils/binutils/CVE-2017-9039.patch Normal file
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@@ -0,0 +1,72 @@
From 75ec1fdbb797a389e4fe4aaf2e15358a070dcc19 Mon Sep 17 00:00:00 2001
From: Nick Clifton <nickc@redhat.com>
Date: Mon, 3 Apr 2017 11:13:21 +0100
Subject: [PATCH] Fix runtime seg-fault in readelf when parsing a corrupt MIPS
binary.
PR binutils/21344
* readelf.c (process_mips_specific): Check for an out of range GOT
entry before reading the module pointer.
Upstream-Status: Backport
CVE: CVE-2017-9039 supporting patch
VER: <= 2.28
Signed-off-by: Armin kuster <akuster@mvista.com>
---
binutils/ChangeLog | 6 ++++++
binutils/readelf.c | 26 ++++++++++++++++++--------
2 files changed, 24 insertions(+), 8 deletions(-)
Index: git/binutils/readelf.c
===================================================================
--- git.orig/binutils/readelf.c
+++ git/binutils/readelf.c
@@ -14987,14 +14987,24 @@ process_mips_specific (FILE * file)
printf (_(" Lazy resolver\n"));
if (ent == (bfd_vma) -1)
goto got_print_fail;
- if (data
- && (byte_get (data + ent - pltgot, addr_size)
- >> (addr_size * 8 - 1)) != 0)
+
+ if (data)
{
- ent = print_mips_got_entry (data, pltgot, ent, data_end);
- printf (_(" Module pointer (GNU extension)\n"));
- if (ent == (bfd_vma) -1)
- goto got_print_fail;
+ /* PR 21344 */
+ if (data + ent - pltgot > data_end - addr_size)
+ {
+ error (_("Invalid got entry - %#lx - overflows GOT table\n"), ent);
+ goto got_print_fail;
+ }
+
+ if (byte_get (data + ent - pltgot, addr_size)
+ >> (addr_size * 8 - 1) != 0)
+ {
+ ent = print_mips_got_entry (data, pltgot, ent, data_end);
+ printf (_(" Module pointer (GNU extension)\n"));
+ if (ent == (bfd_vma) -1)
+ goto got_print_fail;
+ }
}
printf ("\n");
Index: git/bfd/ChangeLog
===================================================================
--- git.orig/bfd/ChangeLog
+++ git/bfd/ChangeLog
@@ -1,5 +1,11 @@
2017-04-03 Nick Clifton <nickc@redhat.com>
+ PR binutils/21344
+ * readelf.c (process_mips_specific): Check for an out of range GOT
+ entry before reading the module pointer.
+
+2017-04-03 Nick Clifton <nickc@redhat.com>
+
PR binutils/21343
* readelf.c (get_unwind_section_word): Fix snafu checking for
invalid word offsets in ARM unwind information.

56
meta/recipes-devtools/binutils/binutils/CVE-2017-9039_1.patch Normal file
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@@ -0,0 +1,56 @@
From 82156ab704b08b124d319c0decdbd48b3ca2dac5 Mon Sep 17 00:00:00 2001
From: Nick Clifton <nickc@redhat.com>
Date: Mon, 3 Apr 2017 12:14:06 +0100
Subject: [PATCH] readelf: Fix overlarge memory allocation when reading a
binary with an excessive number of program headers.
PR binutils/21345
* readelf.c (get_program_headers): Check for there being too many
program headers before attempting to allocate space for them.
Upstream-Status: Backport
CVE: CVE-2017-9039
VER: <= 2.28
Signed-off-by: Armin Kuster <akuster@mvista.com>
---
binutils/ChangeLog | 6 ++++++
binutils/readelf.c | 17 ++++++++++++++---
2 files changed, 20 insertions(+), 3 deletions(-)
Index: git/binutils/readelf.c
===================================================================
--- git.orig/binutils/readelf.c
+++ git/binutils/readelf.c
@@ -4705,9 +4705,19 @@ get_program_headers (FILE * file)
if (program_headers != NULL)
return 1;
- phdrs = (Elf_Internal_Phdr *) cmalloc (elf_header.e_phnum,
- sizeof (Elf_Internal_Phdr));
+ /* Be kind to memory checkers by looking for
+ e_phnum values which we know must be invalid. */
+ if (elf_header.e_phnum
+ * (is_32bit_elf ? sizeof (Elf32_External_Phdr) : sizeof (Elf64_External_Phdr))
+ >= current_file_size)
+ {
+ error (_("Too many program headers - %#x - the file is not that big\n"),
+ elf_header.e_phnum);
+ return FALSE;
+ }
+ phdrs = (Elf_Internal_Phdr *) cmalloc (elf_header.e_phnum,
+ sizeof (Elf_Internal_Phdr));
if (phdrs == NULL)
{
error (_("Out of memory reading %u program headers\n"),
@@ -14993,7 +15003,8 @@ process_mips_specific (FILE * file)
/* PR 21344 */
if (data + ent - pltgot > data_end - addr_size)
{
- error (_("Invalid got entry - %#lx - overflows GOT table\n"), ent);
+ error (_("Invalid got entry - %#lx - overflows GOT table\n"),
+ (long) ent);
goto got_print_fail;
}