- Vulnerabilities 87,986
CentOS Update for systemtap CESA-2010:0894 centos5 i386
Published: 2011-08-09 06:20:34
CVE Author: NIST National Vulnerability Database
CVSS Base Vector:
AV:L/AC:L/Au:N/C:C/I:C/A:C
Summary:
The remote host is missing an update for the 'systemtap'
Linux Distribution Package(s) announced via the referenced advisory.
Affected Versions:
systemtap on CentOS 5
Technical Details:
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.
(CVE-2010-4171)
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 Linux Distribution Packages, which contain
backported patches to correct these issues.
Recommendations:
Please install the updated Linux Distribution Packages.
Detection Type:
Linux Distribution Package
Solution Type:
Vendor Patch
https://nvd.nist.gov/vuln/detail/CVE-2010-4170
https://nvd.nist.gov/vuln/detail/CVE-2010-4171
http://lists.centos.org/pipermail/centos-announce/2010-November/017186.html
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