Updated systemtap packages that fix one security issue are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score,

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====================================================================                   Red Hat Security Advisory

Synopsis:          Moderate: systemtap security update
Advisory ID:       RHSA-2011:0841-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2011:0841.html
Issue date:        2011-05-31
CVE Names:         CVE-2011-1769 
====================================================================
1. Summary:

Updated systemtap packages that fix one security issue are now available
for Red Hat Enterprise Linux 5.

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 (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

3. Description:

SystemTap is an instrumentation system for systems running the Linux
kernel, version 2.6. Developers can write scripts to collect data on the
operation of the system.

A divide-by-zero flaw was found in the way SystemTap handled malformed
debugging information in DWARF format. When SystemTap unprivileged mode was
enabled, an unprivileged user in the stapusr group could use this flaw to
crash the system. Additionally, a privileged user (root, or a member of the
stapdev group) could trigger this flaw when tricked into instrumenting a
specially-crafted ELF binary, even when unprivileged mode was not enabled.
(CVE-2011-1769)

SystemTap users should upgrade to these updated packages, which contain a
backported patch to correct this issue.

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/kb/docs/DOC-11259

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

702687 - CVE-2011-1769 systemtap: does not guard against DWARF operations div-by-zero errors, which can cause a kernel panic

6. Package List:

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:

i386:
systemtap-1.3-4.el5_6.1.i386.rpm
systemtap-client-1.3-4.el5_6.1.i386.rpm
systemtap-debuginfo-1.3-4.el5_6.1.i386.rpm
systemtap-initscript-1.3-4.el5_6.1.i386.rpm
systemtap-runtime-1.3-4.el5_6.1.i386.rpm
systemtap-sdt-devel-1.3-4.el5_6.1.i386.rpm
systemtap-server-1.3-4.el5_6.1.i386.rpm
systemtap-testsuite-1.3-4.el5_6.1.i386.rpm

x86_64:
systemtap-1.3-4.el5_6.1.x86_64.rpm
systemtap-client-1.3-4.el5_6.1.x86_64.rpm
systemtap-debuginfo-1.3-4.el5_6.1.i386.rpm
systemtap-debuginfo-1.3-4.el5_6.1.x86_64.rpm
systemtap-initscript-1.3-4.el5_6.1.x86_64.rpm
systemtap-runtime-1.3-4.el5_6.1.x86_64.rpm
systemtap-sdt-devel-1.3-4.el5_6.1.i386.rpm
systemtap-sdt-devel-1.3-4.el5_6.1.x86_64.rpm
systemtap-server-1.3-4.el5_6.1.x86_64.rpm
systemtap-testsuite-1.3-4.el5_6.1.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:

i386:
systemtap-1.3-4.el5_6.1.i386.rpm
systemtap-client-1.3-4.el5_6.1.i386.rpm
systemtap-debuginfo-1.3-4.el5_6.1.i386.rpm
systemtap-initscript-1.3-4.el5_6.1.i386.rpm
systemtap-runtime-1.3-4.el5_6.1.i386.rpm
systemtap-sdt-devel-1.3-4.el5_6.1.i386.rpm
systemtap-server-1.3-4.el5_6.1.i386.rpm
systemtap-testsuite-1.3-4.el5_6.1.i386.rpm

ia64:
systemtap-1.3-4.el5_6.1.ia64.rpm
systemtap-client-1.3-4.el5_6.1.ia64.rpm
systemtap-debuginfo-1.3-4.el5_6.1.ia64.rpm
systemtap-initscript-1.3-4.el5_6.1.ia64.rpm
systemtap-runtime-1.3-4.el5_6.1.ia64.rpm
systemtap-sdt-devel-1.3-4.el5_6.1.ia64.rpm
systemtap-server-1.3-4.el5_6.1.ia64.rpm
systemtap-testsuite-1.3-4.el5_6.1.ia64.rpm

ppc:
systemtap-1.3-4.el5_6.1.ppc64.rpm
systemtap-client-1.3-4.el5_6.1.ppc64.rpm
systemtap-debuginfo-1.3-4.el5_6.1.ppc64.rpm
systemtap-initscript-1.3-4.el5_6.1.ppc64.rpm
systemtap-runtime-1.3-4.el5_6.1.ppc64.rpm
systemtap-sdt-devel-1.3-4.el5_6.1.ppc64.rpm
systemtap-server-1.3-4.el5_6.1.ppc64.rpm
systemtap-testsuite-1.3-4.el5_6.1.ppc64.rpm

s390x:
systemtap-1.3-4.el5_6.1.s390x.rpm
systemtap-client-1.3-4.el5_6.1.s390x.rpm
systemtap-debuginfo-1.3-4.el5_6.1.s390.rpm
systemtap-debuginfo-1.3-4.el5_6.1.s390x.rpm
systemtap-initscript-1.3-4.el5_6.1.s390x.rpm
systemtap-runtime-1.3-4.el5_6.1.s390x.rpm
systemtap-sdt-devel-1.3-4.el5_6.1.s390.rpm
systemtap-sdt-devel-1.3-4.el5_6.1.s390x.rpm
systemtap-server-1.3-4.el5_6.1.s390x.rpm
systemtap-testsuite-1.3-4.el5_6.1.s390x.rpm

x86_64:
systemtap-1.3-4.el5_6.1.x86_64.rpm
systemtap-client-1.3-4.el5_6.1.x86_64.rpm
systemtap-debuginfo-1.3-4.el5_6.1.i386.rpm
systemtap-debuginfo-1.3-4.el5_6.1.x86_64.rpm
systemtap-initscript-1.3-4.el5_6.1.x86_64.rpm
systemtap-runtime-1.3-4.el5_6.1.x86_64.rpm
systemtap-sdt-devel-1.3-4.el5_6.1.i386.rpm
systemtap-sdt-devel-1.3-4.el5_6.1.x86_64.rpm
systemtap-server-1.3-4.el5_6.1.x86_64.rpm
systemtap-testsuite-1.3-4.el5_6.1.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://access.redhat.com/security/cve/CVE-2011-1769
https://access.redhat.com/security/updates/classification#moderate

8. Contact:

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

Copyright 2011 Red Hat, Inc.
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