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Test ID:
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2010:0894
The remote host is missing updates announced in
advisory RHSA-2010:0894.

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)

It was discovered that staprun did not check if the module to be unloaded
was previously loaded by SystemTap. A local, unprivileged user could use
this flaw to unload an arbitrary kernel module that was not in use.

Note: 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 these issues.

SystemTap users should upgrade to these updated packages, which contain
backported patches to correct these issues.

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

Risk factor : High

CVSS Score:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2010-4170
BugTraq ID: 44914
Debian Security Information: DSA-2348 (Google Search)
XForce ISS Database: systemtap-staprun-priv-escalation(63344)
Common Vulnerability Exposure (CVE) ID: CVE-2010-4171
BugTraq ID: 44917
XForce ISS Database: systemtap-staprunmod-dos(63345)
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