- ---------------------------------------------------------------------                   Red Hat Security Advisory

Synopsis:          Low: gdb security and bug fix update
Advisory ID:       RHSA-2007:0469-01
Advisory URL:      https://access.redhat.com/errata/RHSA-2007:0469.html
Issue date:        2007-06-07
Updated on:        2007-06-11
Product:           Red Hat Enterprise Linux
Keywords:          stack buffer overflow dwarf
CVE Names:         CVE-2006-4146 
- ---------------------------------------------------------------------1. Summary:

An updated gdb package that fixes a security issue and various bugs is now
available.

This update has been rated as having low security impact by the Red Hat
Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Desktop version 3 - i386, x86_64
Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64

3. Problem description:

GDB, the GNU debugger, allows debugging of programs written in C, C++, and
other languages by executing them in a controlled fashion and then printing
their data.

Various buffer overflows and underflows were found in the DWARF expression
computation stack in GDB.  If an attacker could trick a user into loading
an executable containing malicious debugging information into GDB, they may
be able to execute arbitrary code with the privileges of the user.
(CVE-2006-4146)

This updated package also addresses the following issues:

* Support on 64-bit hosts shared libraries debuginfo larger than 2GB.

* Fix a race occasionally leaving the detached processes stopped.

* Fix segmentation fault on the source display by ^X 1.

* Fix a crash on an opaque type dereference.

All users of gdb should upgrade to this updated package, which contains
backported patches to resolve these issues.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.  Use Red Hat
Network to download and update your packages.  To launch the Red Hat
Update Agent, use the following command:

    up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

    http://www.redhat.com/docs/manuals/enterprise/

5. Bug IDs fixed (http://bugzilla.redhat.com/):

135488 - gdb internal error with incomplete type
189607 - pstack can cause process to suspend
203875 - CVE-2006-4146 GDB buffer overflow

6. RPMs required:

Red Hat Enterprise Linux AS version 3:

SRPMS:
5d20efee6cc926efbe60cb3759fed958  gdb-6.3.0.0-1.138.el3.src.rpm

i386:
c8d483d2dd0a03e29186ff119c2ba175  gdb-6.3.0.0-1.138.el3.i386.rpm
9f6f95ff1e5543bd8cf2443ce9ac9e1f  gdb-debuginfo-6.3.0.0-1.138.el3.i386.rpm

ia64:
c8d483d2dd0a03e29186ff119c2ba175  gdb-6.3.0.0-1.138.el3.i386.rpm
a570435ed2d6ef5416f5ed16e9fbf86e  gdb-6.3.0.0-1.138.el3.ia64.rpm
9f6f95ff1e5543bd8cf2443ce9ac9e1f  gdb-debuginfo-6.3.0.0-1.138.el3.i386.rpm
36d4622e760b9b10d9902de0e1a6267b  gdb-debuginfo-6.3.0.0-1.138.el3.ia64.rpm

ppc:
4581a63c4e8f72c324eb83cb124dc36a  gdb-6.3.0.0-1.138.el3.ppc.rpm
e125035130a60bb9daaf5454b1110577  gdb-6.3.0.0-1.138.el3.ppc64.rpm
5a8ce553c885efbe63a104701e92cd5d  gdb-debuginfo-6.3.0.0-1.138.el3.ppc.rpm
438387cb7b7d80563c121be3ae1e55f7  gdb-debuginfo-6.3.0.0-1.138.el3.ppc64.rpm

s390:
37fd6c49eae317b511b7323bf23c73e6  gdb-6.3.0.0-1.138.el3.s390.rpm
4282c2753ddbacddd99c9916d3219243  gdb-debuginfo-6.3.0.0-1.138.el3.s390.rpm

s390x:
37fd6c49eae317b511b7323bf23c73e6  gdb-6.3.0.0-1.138.el3.s390.rpm
0a8d164aeaaed8071f395812b1f6a4a2  gdb-6.3.0.0-1.138.el3.s390x.rpm
4282c2753ddbacddd99c9916d3219243  gdb-debuginfo-6.3.0.0-1.138.el3.s390.rpm
71302f9655b23f38ecd18082cb9aed61  gdb-debuginfo-6.3.0.0-1.138.el3.s390x.rpm

x86_64:
c8d483d2dd0a03e29186ff119c2ba175  gdb-6.3.0.0-1.138.el3.i386.rpm
bfd9abd47d6aa910408cc860d81dcb74  gdb-6.3.0.0-1.138.el3.x86_64.rpm
9f6f95ff1e5543bd8cf2443ce9ac9e1f  gdb-debuginfo-6.3.0.0-1.138.el3.i386.rpm
ca05c259b0ce05211cbc7935071c9464  gdb-debuginfo-6.3.0.0-1.138.el3.x86_64.rpm

Red Hat Desktop version 3:

SRPMS:
5d20efee6cc926efbe60cb3759fed958  gdb-6.3.0.0-1.138.el3.src.rpm

i386:
c8d483d2dd0a03e29186ff119c2ba175  gdb-6.3.0.0-1.138.el3.i386.rpm
9f6f95ff1e5543bd8cf2443ce9ac9e1f  gdb-debuginfo-6.3.0.0-1.138.el3.i386.rpm

x86_64:
c8d483d2dd0a03e29186ff119c2ba175  gdb-6.3.0.0-1.138.el3.i386.rpm
bfd9abd47d6aa910408cc860d81dcb74  gdb-6.3.0.0-1.138.el3.x86_64.rpm
9f6f95ff1e5543bd8cf2443ce9ac9e1f  gdb-debuginfo-6.3.0.0-1.138.el3.i386.rpm
ca05c259b0ce05211cbc7935071c9464  gdb-debuginfo-6.3.0.0-1.138.el3.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
5d20efee6cc926efbe60cb3759fed958  gdb-6.3.0.0-1.138.el3.src.rpm

i386:
c8d483d2dd0a03e29186ff119c2ba175  gdb-6.3.0.0-1.138.el3.i386.rpm
9f6f95ff1e5543bd8cf2443ce9ac9e1f  gdb-debuginfo-6.3.0.0-1.138.el3.i386.rpm

ia64:
c8d483d2dd0a03e29186ff119c2ba175  gdb-6.3.0.0-1.138.el3.i386.rpm
a570435ed2d6ef5416f5ed16e9fbf86e  gdb-6.3.0.0-1.138.el3.ia64.rpm
9f6f95ff1e5543bd8cf2443ce9ac9e1f  gdb-debuginfo-6.3.0.0-1.138.el3.i386.rpm
36d4622e760b9b10d9902de0e1a6267b  gdb-debuginfo-6.3.0.0-1.138.el3.ia64.rpm

x86_64:
c8d483d2dd0a03e29186ff119c2ba175  gdb-6.3.0.0-1.138.el3.i386.rpm
bfd9abd47d6aa910408cc860d81dcb74  gdb-6.3.0.0-1.138.el3.x86_64.rpm
9f6f95ff1e5543bd8cf2443ce9ac9e1f  gdb-debuginfo-6.3.0.0-1.138.el3.i386.rpm
ca05c259b0ce05211cbc7935071c9464  gdb-debuginfo-6.3.0.0-1.138.el3.x86_64.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
5d20efee6cc926efbe60cb3759fed958  gdb-6.3.0.0-1.138.el3.src.rpm

i386:
c8d483d2dd0a03e29186ff119c2ba175  gdb-6.3.0.0-1.138.el3.i386.rpm
9f6f95ff1e5543bd8cf2443ce9ac9e1f  gdb-debuginfo-6.3.0.0-1.138.el3.i386.rpm

ia64:
c8d483d2dd0a03e29186ff119c2ba175  gdb-6.3.0.0-1.138.el3.i386.rpm
a570435ed2d6ef5416f5ed16e9fbf86e  gdb-6.3.0.0-1.138.el3.ia64.rpm
9f6f95ff1e5543bd8cf2443ce9ac9e1f  gdb-debuginfo-6.3.0.0-1.138.el3.i386.rpm
36d4622e760b9b10d9902de0e1a6267b  gdb-debuginfo-6.3.0.0-1.138.el3.ia64.rpm

x86_64:
c8d483d2dd0a03e29186ff119c2ba175  gdb-6.3.0.0-1.138.el3.i386.rpm
bfd9abd47d6aa910408cc860d81dcb74  gdb-6.3.0.0-1.138.el3.x86_64.rpm
9f6f95ff1e5543bd8cf2443ce9ac9e1f  gdb-debuginfo-6.3.0.0-1.138.el3.i386.rpm
ca05c259b0ce05211cbc7935071c9464  gdb-debuginfo-6.3.0.0-1.138.el3.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4146
http://www.redhat.com/security/updates/classification/#low

8. Contact:

The Red Hat security contact is .  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2007 Red Hat, Inc.