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RHEL 4 : systemtap (RHSA-2010:0895)

high Nessus Plugin ID 50647

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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

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.

Solution

Update the affected systemtap, systemtap-runtime and / or systemtap-testsuite packages.

See Also

https://access.redhat.com/security/cve/cve-2010-4170

https://access.redhat.com/errata/RHSA-2010:0895

Plugin Details

Severity: High

ID: 50647

File Name: redhat-RHSA-2010-0895.nasl

Version: 1.22

Type: local

Agent: unix

Published: 11/18/2010

Updated: 1/14/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:systemtap-testsuite, p-cpe:/a:redhat:enterprise_linux:systemtap-runtime, cpe:/o:redhat:enterprise_linux:4, p-cpe:/a:redhat:enterprise_linux:systemtap, cpe:/o:redhat:enterprise_linux:4.8

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/17/2010

Vulnerability Publication Date: 12/7/2010

Exploitable With

Metasploit (SystemTap MODPROBE_OPTIONS Privilege Escalation)

Reference Information

CVE: CVE-2010-4170

RHSA: 2010:0895