Articles / Red Hat: Updated gdb packag…

Red Hat: Updated gdb packages fix a security issue

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. Fixed packages are available from updates.redhat.com.
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                   Red Hat Security Advisory

Synopsis:          Low: gdb security and bug fix update
Advisory ID:       RHSA-2007:0469-01
Advisory URL:      https://rhn.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 
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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:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/gdb-6.3.0.0-1.138.el3.src.rpm
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:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/gdb-6.3.0.0-1.138.el3.src.rpm
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:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/gdb-6.3.0.0-1.138.el3.src.rpm
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:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/gdb-6.3.0.0-1.138.el3.src.rpm
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.
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