Scientific Linux SL5 Important Advisories CVE-2013-0871 Privilege Escalation

Date: Tue, 12 Mar 2013 10:19:37 -0500
Reply-To: Pat Riehecky 
Sender: Security Errata for Scientific Linux
 
From: Pat Riehecky 
Subject: Security ERRATA Important: kernel on SL5.x i386/x86_64
MIME-Version: 1.0

Synopsis: Important: kernel security update
Issue Date: 2013-03-11
CVE Numbers: CVE-2013-0871
 CVE-2013-0268
--

This update fixes the following security issues:

* A flaw was found in the way file permission checks for the
"/dev/cpu/[x]/msr" files were performed in restricted root environments
(for example, when using a capability-based security model). A local user
with the ability to write to these files could use this flaw to escalate
their privileges to kernel level, for example, by writing to the
SYSENTER_EIP_MSR register. (CVE-2013-0268, Important)

* A race condition was found in the way the Linux kernel's ptrace
implementation handled PTRACE_SETREGS requests when the debuggee was woken
due to a SIGKILL signal instead of being stopped. A local, unprivileged
user could use this flaw to escalate their privileges. (CVE-2013-0871,
Important)

The system must be rebooted for this update to take effect.
--

SL5
 x86_64
 kernel-2.6.18-348.3.1.el5.x86_64.rpm
 kernel-debug-2.6.18-348.3.1.el5.x86_64.rpm
 kernel-debug-debuginfo-2.6.18-348.3.1.el5.x86_64.rpm
 kernel-debug-devel-2.6.18-348.3.1.el5.x86_64.rpm
 kernel-debuginfo-2.6.18-348.3.1.el5.x86_64.rpm
 kernel-debuginfo-common-2.6.18-348.3.1.el5.x86_64.rpm
 kernel-devel-2.6.18-348.3.1.el5.x86_64.rpm
 kernel-headers-2.6.18-348.3.1.el5.x86_64.rpm
 kernel-xen-2.6.18-348.3.1.el5.x86_64.rpm
 kernel-xen-debuginfo-2.6.18-348.3.1.el5.x86_64.rpm
 kernel-xen-devel-2.6.18-348.3.1.el5.x86_64.rpm
 i386
 kernel-2.6.18-348.3.1.el5.i686.rpm
 kernel-PAE-2.6.18-348.3.1.el5.i686.rpm
 kernel-PAE-debuginfo-2.6.18-348.3.1.el5.i686.rpm
 kernel-PAE-devel-2.6.18-348.3.1.el5.i686.rpm
 kernel-debug-2.6.18-348.3.1.el5.i686.rpm
 kernel-debug-debuginfo-2.6.18-348.3.1.el5.i686.rpm
 kernel-debug-devel-2.6.18-348.3.1.el5.i686.rpm
 kernel-debuginfo-2.6.18-348.3.1.el5.i686.rpm
 kernel-debuginfo-common-2.6.18-348.3.1.el5.i686.rpm
 kernel-devel-2.6.18-348.3.1.el5.i686.rpm
 kernel-headers-2.6.18-348.3.1.el5.i386.rpm
 kernel-xen-2.6.18-348.3.1.el5.i686.rpm
 kernel-xen-debuginfo-2.6.18-348.3.1.el5.i686.rpm
 kernel-xen-devel-2.6.18-348.3.1.el5.i686.rpm
 noarch
 kernel-doc-2.6.18-348.3.1.el5.noarch.rpm

- Scientific Linux Development Team