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Test ID:1.3.6.1.4.1.25623.1.0.68542
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2010:0895
Summary:NOSUMMARY
Description:Description:
The remote host is missing updates announced in
advisory RHSA-2010:0895.

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.

Solution:
Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

http://rhn.redhat.com/errata/RHSA-2010-0895.html

Risk factor : High

CVSS Score:
7.2

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2010-4170
BugTraq ID: 44914
http://www.securityfocus.com/bid/44914
Debian Security Information: DSA-2348 (Google Search)
http://www.debian.org/security/2011/dsa-2348
http://www.exploit-db.com/exploits/15620
https://www.exploit-db.com/exploits/46730/
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051115.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051122.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051127.html
http://packetstormsecurity.com/files/152569/SystemTap-1.3-MODPROBE_OPTIONS-Privilege-Escalation.html
http://sources.redhat.com/ml/systemtap/2010-q4/msg00230.html
http://www.redhat.com/support/errata/RHSA-2010-0894.html
http://www.redhat.com/support/errata/RHSA-2010-0895.html
http://www.securitytracker.com/id?1024754
http://secunia.com/advisories/42256
http://secunia.com/advisories/42263
http://secunia.com/advisories/42306
http://secunia.com/advisories/42318
http://secunia.com/advisories/46920
XForce ISS Database: systemtap-staprun-priv-escalation(63344)
https://exchange.xforce.ibmcloud.com/vulnerabilities/63344
CopyrightCopyright (c) 2010 E-Soft Inc. http://www.securityspace.com

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