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Ubuntu: USN-2011-0012-1 Moderate: Race Condition in Systemtap Detected

red hat
Calendar Grey July 25, 2011
Scroller Redhat Esm H88
New systemtap updates released for Red Hat Linux 5 to address a moderate security vulnerability. Find out more details today.
Updated systemtap packages that fix one security issue are now available for Red Hat Enterprise Linux 5

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

Summary

SystemTap is an instrumentation system for systems running the Linux kernel. The system allows developers to write scripts to collect data on the operation of the system.
A race condition flaw was found in the way the staprun utility performed module loading. A local user who is a member of the stapusr group could use this flaw to modify a signed module while it is being loaded, allowing them to escalate their privileges. (CVE-2011-2503)
SystemTap users should upgrade to these updated packages, which contain a backported patch to correct this issue.

Topics%20covered

Topics Covered

security advisory Red Hat software update moderate severity race condition systemtap

References

https://access.redhat.com/security/cve/CVE-2011-2503 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386: systemtap-1.3-9.el5.i386.rpm systemtap-client-1.3-9.el5.i386.rpm systemtap-debuginfo-1.3-9.el5.i386.rpm systemtap-initscript-1.3-9.el5.i386.rpm systemtap-runtime-1.3-9.el5.i386.rpm systemtap-sdt-devel-1.3-9.el5.i386.rpm systemtap-server-1.3-9.el5.i386.rpm systemtap-testsuite-1.3-9.el5.i386.rpm
x86_64: systemtap-1.3-9.el5.x86_64.rpm systemtap-client-1.3-9.el5.x86_64.rpm systemtap-debuginfo-1.3-9.el5.i386.rpm systemtap-debuginfo-1.3-9.el5.x86_64.rpm systemtap-initscript-1.3-9.el5.x86_64.rpm systemtap-runtime-1.3-9.el5.x86_64.rpm systemtap-sdt-devel-1.3-9.el5.i386.rpm systemtap-sdt-devel-1.3-9.el5.x86_64.rpm systemtap-server-1.3-9.el5.x86_64.rpm systemtap-testsuite-1.3-9.el5.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386: systemtap-1.3-9.el5.i386.rpm systemtap-client-1.3-9.el5.i386.rpm systemtap-debuginfo-1.3-9.el5.i386.rpm systemtap-initscript-1.3-9.el5.i386.rpm systemtap-runtime-1.3-9.el5.i386.rpm systemtap-sdt-devel-1.3-9.el5.i386.rpm systemtap-server-1.3-9.el5.i386.rpm systemtap-testsuite-1.3-9.el5.i386.rpm
ia64: systemtap-1.3-9.el5.ia64.rpm systemtap-client-1.3-9.el5.ia64.rpm systemtap-debuginfo-1.3-9.el5.ia64.rpm systemtap-initscript-1.3-9.el5.ia64.rpm systemtap-runtime-1.3-9.el5.ia64.rpm

Read the Full Advisory


Advisory ID: RHSA-2011:1089-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2011:1089.html
Issue date: 2011-07-25

Topic

Updated systemtap packages that fix one security issue are now availablefor Red Hat Enterprise Linux 5.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

Topics%20covered

Topics Covered

security advisory Red Hat software update moderate severity race condition systemtap

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

Bugs Fixed

716489 - CVE-2011-2503 systemtap: signed module loading race condition

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