LinuxSecurity.com
Share your story
The central voice for Linux and Open Source security news
Home News Topics Advisories HOWTOs Features Newsletters About Register

Welcome!
Sign up!
EnGarde Community
Login
Polls
What is the most important Linux security technology?
 
Advisories
Community
Linux Events
Linux User Groups
Link to Us
Security Center
Book Reviews
Security Dictionary
Security Tips
SELinux
White Papers
Featured Blogs
All About Linux
DanWalsh LiveJournal
Securitydistro
Latest Newsletters
Linux Advisory Watch: August 15th, 2014
Linux Advisory Watch: August 8th, 2014
Subscribe
LinuxSecurity Newsletters
E-mail:
Choose Lists:
About our Newsletters
RSS Feeds
Get the LinuxSecurity news you want faster with RSS
Powered By

  
Red Hat: 2013:0522-02: gdb: Moderate Advisory Print E-mail
User Rating:      How can I rate this item?
Posted by Benjamin D. Thomas   
RedHat Linux Updated gdb packages that fix one security issue and three bugs are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate [More...]
=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: gdb security and bug fix update
Advisory ID:       RHSA-2013:0522-02
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2013-0522.html
Issue date:        2013-02-21
CVE Names:         CVE-2011-4355 
=====================================================================

1. Summary:

Updated gdb packages that fix one security issue and three bugs are now
available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

3. Description:

The GNU Debugger (GDB) allows debugging of programs written in C, C++,
Java, and other languages by executing them in a controlled fashion and
then printing out their data.

GDB tried to auto-load certain files (such as GDB scripts, Python scripts,
and a thread debugging library) from the current working directory when
debugging programs. This could result in the execution of arbitrary code
with the user's privileges when GDB was run in a directory that has
untrusted content. (CVE-2011-4355)

With this update, GDB no longer auto-loads files from the current directory
and only trusts certain system directories by default. The list of trusted
directories can be viewed and modified using the "show auto-load safe-path"
and "set auto-load safe-path" GDB commands. Refer to the GDB manual, linked
to in the References, for further information.

This update also fixes the following bugs:

* When a struct member was at an offset greater than 256 MB, the resulting
bit position within the struct overflowed and caused an invalid memory
access by GDB. With this update, the code has been modified to ensure that
GDB can access such positions. (BZ#795424)

* When a thread list of the core file became corrupted, GDB did not print
this list but displayed the "Cannot find new threads: generic error" error
message instead. With this update, GDB has been modified and it now prints
the thread list of the core file as expected. (BZ#811648)

* GDB did not properly handle debugging of multiple binaries with the
same build ID. This update modifies GDB to use symbolic links created for
particular binaries so that debugging of binaries that share a build ID
now proceeds as expected. Debugging of live programs and core files is
now more user-friendly. (BZ#836966)

All users of gdb are advised to upgrade to these updated packages, which
contain backported patches to correct these issues.

4. Solution:

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258

5. Bugs fixed (http://bugzilla.redhat.com/):

703238 - CVE-2011-4355 gdb: object file .debug_gdb_scripts section improper input validation
811648 - Cannot find new threads: generic error
836966 - Backport gdb fix to handle identical binaries via additional build-id symlinks

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/gdb-7.2-60.el6.src.rpm

i386:
gdb-7.2-60.el6.i686.rpm
gdb-debuginfo-7.2-60.el6.i686.rpm
gdb-gdbserver-7.2-60.el6.i686.rpm

x86_64:
gdb-7.2-60.el6.x86_64.rpm
gdb-debuginfo-7.2-60.el6.x86_64.rpm
gdb-gdbserver-7.2-60.el6.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/gdb-7.2-60.el6.src.rpm

x86_64:
gdb-7.2-60.el6.x86_64.rpm
gdb-debuginfo-7.2-60.el6.x86_64.rpm
gdb-gdbserver-7.2-60.el6.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/gdb-7.2-60.el6.src.rpm

i386:
gdb-7.2-60.el6.i686.rpm
gdb-debuginfo-7.2-60.el6.i686.rpm
gdb-gdbserver-7.2-60.el6.i686.rpm

ppc64:
gdb-7.2-60.el6.ppc64.rpm
gdb-debuginfo-7.2-60.el6.ppc64.rpm
gdb-gdbserver-7.2-60.el6.ppc64.rpm

s390x:
gdb-7.2-60.el6.s390x.rpm
gdb-debuginfo-7.2-60.el6.s390x.rpm
gdb-gdbserver-7.2-60.el6.s390x.rpm

x86_64:
gdb-7.2-60.el6.x86_64.rpm
gdb-debuginfo-7.2-60.el6.x86_64.rpm
gdb-gdbserver-7.2-60.el6.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/gdb-7.2-60.el6.src.rpm

i386:
gdb-7.2-60.el6.i686.rpm
gdb-debuginfo-7.2-60.el6.i686.rpm
gdb-gdbserver-7.2-60.el6.i686.rpm

x86_64:
gdb-7.2-60.el6.x86_64.rpm
gdb-debuginfo-7.2-60.el6.x86_64.rpm
gdb-gdbserver-7.2-60.el6.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://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2011-4355.html
https://access.redhat.com/security/updates/classification/#moderate
http://sourceware.org/gdb/current/onlinedocs/gdb/Auto_002dloading-safe-path.html#Auto_002dloading-safe-path
http://sourceware.org/gdb/current/onlinedocs/gdb/Auto_002dloading.html#Auto_002dloading

8. Contact:

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

Copyright 2013 Red Hat, Inc.
 
< Prev   Next >
    
Partner

 

Latest Features
Peter Smith Releases Linux Network Security Online
Securing a Linux Web Server
Password guessing with Medusa 2.0
Password guessing as an attack vector
Squid and Digest Authentication
Squid and Basic Authentication
Demystifying the Chinese Hacking Industry: Earning 6 Million a Night
Free Online security course (LearnSIA) - A Call for Help
What You Need to Know About Linux Rootkits
Review: A Practical Guide to Fedora and Red Hat Enterprise Linux - Fifth Edition
Yesterday's Edition
Moving toward smart and secure continuous software delivery
Stealthy, Razor Thin ATM Insert Skimmers
Partner Sponsor

Community | HOWTOs | Blogs | Features | Book Reviews | Networking
 Security Projects |  Latest News |  Newsletters |  SELinux |  Privacy |  Home
 Hardening |   About Us |   Advertise |   Legal Notice |   RSS |   Guardian Digital
(c)Copyright 2014 Guardian Digital, Inc. All rights reserved.