Oracle Linux 4 : systemtap (ELSA-2010-0895)

This script is Copyright (C) 2013 Tenable Network Security, Inc.


Synopsis :

The remote Oracle Linux host is missing one or more security updates.

Description :

From Red Hat Security Advisory 2010:0895 :

Updated systemtap packages that fix one security issue are now
available for Red Hat Enterprise Linux 4.

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.

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. staprun, the SystemTap runtime tool, is
used for managing SystemTap kernel modules (for example, loading
them).

It was discovered that staprun did not properly sanitize the
environment before executing the modprobe command to load an
additional kernel module. A local, unprivileged user could use this
flaw to escalate their privileges. (CVE-2010-4170)

Note: On Red Hat Enterprise Linux 4, an attacker must be a member of
the stapusr group to exploit this issue. Also note that, after
installing this update, users already in the stapdev group must be
added to the stapusr group in order to be able to run the staprun
tool.

Red Hat would like to thank Tavis Ormandy for reporting this issue.

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

See also :

https://oss.oracle.com/pipermail/el-errata/2010-November/001743.html

Solution :

Update the affected systemtap packages.

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)

Family: Oracle Linux Local Security Checks

Nessus Plugin ID: 68147 ()

Bugtraq ID:

CVE ID: CVE-2010-4170