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============================================================================
Ubuntu Security Notice USN-2496-1
February 09, 2015

binutils vulnerabilities
============================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS

Summary:

Applications from GNU binutils could be made to crash, run programs,
or delete arbitrary files as your login if they opened a specially
crafted file.

Software Description:
- binutils: GNU assembler, linker and binary utilities

Details:

Michal Zalewski discovered that the setup_group function in libbfd in
GNU binutils did not properly check group headers in ELF files. An
attacker could use this to craft input that could cause a denial
of service (application crash) or possibly execute arbitrary code.
(CVE-2014-8485)

Hanno B=F6ck discovered that the _bfd_XXi_swap_aouthdr_in function
in libbfd in GNU binutils allowed out-of-bounds writes. An
attacker could use this to craft input that could cause a denial
of service (application crash) or possibly execute arbitrary code.
(CVE-2014-8501)

Hanno B=F6ck discovered a heap-based buffer overflow in the
pe_print_edata function in libbfd in GNU binutils. An attacker
could use this to craft input that could cause a denial of service
(application crash) or possibly execute arbitrary code. (CVE-2014-8502)

Alexander Cherepanov discovered multiple directory traversal
vulnerabilities in GNU binutils. An attacker could use this to craft
input that could delete arbitrary files. (CVE-2014-8737)

Alexander Cherepanov discovered the _bfd_slurp_extended_name_table
function in libbfd in GNU binutils allowed invalid writes when handling
extended name tables in an archive. An attacker could use this to
craft input that could cause a denial of service (application crash)
or possibly execute arbitrary code. (CVE-2014-8738)

Hanno B=F6ck discovered a stack-based buffer overflow in the ihex_scan
function in libbfd in GNU binutils. An attacker could use this
to craft input that could cause a denial of service (application
crash). (CVE-2014-8503)

Michal Zalewski discovered a stack-based buffer overflow in the
srec_scan function in libbfd in GNU binutils. An attacker could
use this to to craft input that could cause a denial of service
(application crash); the GNU C library's Fortify Source printf
protection should prevent the possibility of executing arbitrary code.
(CVE-2014-8504)

Michal Zalewski discovered that the srec_scan function in libbfd
in GNU binutils allowed out-of-bounds reads. An attacker could
use this to craft input to cause a denial of service. This issue
only affected Ubuntu 14.04 LTS, Ubuntu 12.04 LTS, and Ubuntu 10.04
LTS. (CVE-2014-8484)

Sang Kil Cha discovered multiple integer overflows in the
_objalloc_alloc function and objalloc_alloc macro in binutils. This
could allow an attacker to cause a denial of service (application
crash). This issue only affected Ubuntu 12.04 LTS and Ubuntu 10.04 LTS.
(CVE-2012-3509)

Alexander Cherepanov and Hanno B=F6ck discovered multiple additional
out-of-bounds reads and writes in GNU binutils. An attacker could use
these to craft input that could cause a denial of service (application
crash) or possibly execute arbitrary code. A few of these issues may
be limited in exposure to a denial of service (application abort)
by the GNU C library's Fortify Source printf protection.

The strings(1) utility in GNU binutils used libbfd by default when
examining executable object files; unfortunately, libbfd was not
originally developed with the expectation of hostile input. As
a defensive measure, the behavior of strings has been changed to
default to 'strings --all' behavior, which does not use libbfd; use
the new argument to strings, '--data', to recreate the old behavior.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 14.10:
  binutils                        2.24.90.20141014-0ubuntu3.1
  binutils-multiarch              2.24.90.20141014-0ubuntu3.1

Ubuntu 14.04 LTS:
  binutils                        2.24-5ubuntu3.1
  binutils-multiarch              2.24-5ubuntu3.1

Ubuntu 12.04 LTS:
  binutils                        2.22-6ubuntu1.2
  binutils-multiarch              2.22-6ubuntu1.2

Ubuntu 10.04 LTS:
  binutils                        2.20.1-3ubuntu7.2
  binutils-multiarch              2.20.1-3ubuntu7.2

In general, a standard system update will make all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-2496-1
  CVE-2012-3509, CVE-2014-8484, CVE-2014-8485, CVE-2014-8501,
  CVE-2014-8502, CVE-2014-8503, CVE-2014-8504, CVE-2014-8737,
  CVE-2014-8738

Package Information:
  https://launchpad.net/ubuntu/+source/binutils/2.24.90.20141014-0ubuntu3.1
  https://launchpad.net/ubuntu/+source/binutils/2.24-5ubuntu3.1
  https://launchpad.net/ubuntu/+source/binutils/2.22-6ubuntu1.2
  https://launchpad.net/ubuntu/+source/binutils/2.20.1-3ubuntu7.2