A new update is available for Red Hat Enterprise Linux. Here the announcement:
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Red Hat Security Advisory
Synopsis: Low: gdb security and bug fix update
Advisory ID: RHSA-2007:0229-02
Advisory URL: https://rhn.redhat.com/errata/RHSA-2007-0229.html
Issue date: 2007-05-01
Updated on: 2007-05-01
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 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - 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 a user loaded an executable containing
malicious debugging information into GDB, an attacker might be able to
execute arbitrary code with the privileges of the user. (CVE-2006-4146)
This updated package also addresses the following issues:
* Fixed bogus 0x0 unwind of the thread's topmost function clone(3).
* Fixed deadlock accessing invalid address; for corrupted backtraces.
* Fixed a race which occasionally left the detached processes stopped.
* Fixed 'gcore' command for 32bit debugged processes on 64bit hosts.
* Added support for TLS 'errno' for threaded programs missing its '-debuginfo' package..
* Suggest TLS 'errno' resolving by hand if no threading was found..
* Added a fix to prevent stepping into asynchronously invoked signal handlers.
* Added a fix to avoid false warning on shared objects bfd close on Itanium.
* Fixed segmentation fault on the source display by ^X 1.
* Fixed object names keyboard completion.
* Added a fix to avoid crash of 'info threads' if stale threads exist.
* Fixed a bug where shared libraries occasionally failed to load .
* Fixed handling of exec() called by a threaded debugged program.
* Fixed rebuilding requirements of the gdb package itself on multilib systems.
* Fixed source directory pathname detection for the edit command.
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/):
185337 - p errno does not work when stopped at a breakpoint
193763 - Buffer overrun in add_minsym_members
195429 - info threads crashes if zombie threads exist
202682 - print call foo where foo is in library SEGV
202689 - Cannot find user-level thread for LWP 4256: generic error
204841 - CVE-2006-4146 GDB buffer overflow
6. RPMs required:
Red Hat Enterprise Linux AS version 4:
SRPMS:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/gdb-6.3.0.0-1.143.el4.src.rpm
ed563ce21a2006efbc0692d66be0bc53 gdb-6.3.0.0-1.143.el4.src.rpm
i386:
9b62527f67a18e666b0b067bcdd41c80 gdb-6.3.0.0-1.143.el4.i386.rpm
bbe7e50dad259353505bcd74e7ea94d8 gdb-debuginfo-6.3.0.0-1.143.el4.i386.rpm
ia64:
9b62527f67a18e666b0b067bcdd41c80 gdb-6.3.0.0-1.143.el4.i386.rpm
529d36635ac1f649794a221566f2338f gdb-6.3.0.0-1.143.el4.ia64.rpm
bbe7e50dad259353505bcd74e7ea94d8 gdb-debuginfo-6.3.0.0-1.143.el4.i386.rpm
ce560ff1d05b9de73627f650d561b831 gdb-debuginfo-6.3.0.0-1.143.el4.ia64.rpm
ppc:
98566f98be211ce100067cd7b85d3509 gdb-6.3.0.0-1.143.el4.ppc64.rpm
5d5dc74b03dc8832476add8b850a09ed gdb-debuginfo-6.3.0.0-1.143.el4.ppc64.rpm
s390:
bc1203b4bff149f6c2ca5b69e534060b gdb-6.3.0.0-1.143.el4.s390.rpm
e5e6b66defffe1f28c471d5bd877072a gdb-debuginfo-6.3.0.0-1.143.el4.s390.rpm
s390x:
bf0e6243efc9bbe4b99c112bb018f1b3 gdb-6.3.0.0-1.143.el4.s390x.rpm
0019f56e10a21f8a97042fb32144c86a gdb-debuginfo-6.3.0.0-1.143.el4.s390x.rpm
x86_64:
1226da2eef9141ecb6c1a6f8cdd985ab gdb-6.3.0.0-1.143.el4.x86_64.rpm
665fc3e159ab7f043580b89af8900042 gdb-debuginfo-6.3.0.0-1.143.el4.x86_64.rpm
Red Hat Enterprise Linux Desktop version 4:
SRPMS:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/gdb-6.3.0.0-1.143.el4.src.rpm
ed563ce21a2006efbc0692d66be0bc53 gdb-6.3.0.0-1.143.el4.src.rpm
i386:
9b62527f67a18e666b0b067bcdd41c80 gdb-6.3.0.0-1.143.el4.i386.rpm
bbe7e50dad259353505bcd74e7ea94d8 gdb-debuginfo-6.3.0.0-1.143.el4.i386.rpm
x86_64:
1226da2eef9141ecb6c1a6f8cdd985ab gdb-6.3.0.0-1.143.el4.x86_64.rpm
665fc3e159ab7f043580b89af8900042 gdb-debuginfo-6.3.0.0-1.143.el4.x86_64.rpm
Red Hat Enterprise Linux ES version 4:
SRPMS:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/gdb-6.3.0.0-1.143.el4.src.rpm
ed563ce21a2006efbc0692d66be0bc53 gdb-6.3.0.0-1.143.el4.src.rpm
i386:
9b62527f67a18e666b0b067bcdd41c80 gdb-6.3.0.0-1.143.el4.i386.rpm
bbe7e50dad259353505bcd74e7ea94d8 gdb-debuginfo-6.3.0.0-1.143.el4.i386.rpm
ia64:
9b62527f67a18e666b0b067bcdd41c80 gdb-6.3.0.0-1.143.el4.i386.rpm
529d36635ac1f649794a221566f2338f gdb-6.3.0.0-1.143.el4.ia64.rpm
bbe7e50dad259353505bcd74e7ea94d8 gdb-debuginfo-6.3.0.0-1.143.el4.i386.rpm
ce560ff1d05b9de73627f650d561b831 gdb-debuginfo-6.3.0.0-1.143.el4.ia64.rpm
x86_64:
1226da2eef9141ecb6c1a6f8cdd985ab gdb-6.3.0.0-1.143.el4.x86_64.rpm
665fc3e159ab7f043580b89af8900042 gdb-debuginfo-6.3.0.0-1.143.el4.x86_64.rpm
Red Hat Enterprise Linux WS version 4:
SRPMS:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/gdb-6.3.0.0-1.143.el4.src.rpm
ed563ce21a2006efbc0692d66be0bc53 gdb-6.3.0.0-1.143.el4.src.rpm
i386:
9b62527f67a18e666b0b067bcdd41c80 gdb-6.3.0.0-1.143.el4.i386.rpm
bbe7e50dad259353505bcd74e7ea94d8 gdb-debuginfo-6.3.0.0-1.143.el4.i386.rpm
ia64:
9b62527f67a18e666b0b067bcdd41c80 gdb-6.3.0.0-1.143.el4.i386.rpm
529d36635ac1f649794a221566f2338f gdb-6.3.0.0-1.143.el4.ia64.rpm
bbe7e50dad259353505bcd74e7ea94d8 gdb-debuginfo-6.3.0.0-1.143.el4.i386.rpm
ce560ff1d05b9de73627f650d561b831 gdb-debuginfo-6.3.0.0-1.143.el4.ia64.rpm
x86_64:
1226da2eef9141ecb6c1a6f8cdd985ab gdb-6.3.0.0-1.143.el4.x86_64.rpm
665fc3e159ab7f043580b89af8900042 gdb-debuginfo-6.3.0.0-1.143.el4.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 <secalert@redhat.com>. More contact
details at https://www.redhat.com/security/team/contact/
Copyright 2007 Red Hat, Inc.
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