Scientific Linux Security Update : systemtap on SL6.x i386/x86_64

medium Nessus Plugin ID 61097

Synopsis

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

Description

SystemTap is an instrumentation system for systems running the Linux kernel. The system allows developers to write scripts to collect data on the operation of the system.

It was found that SystemTap did not perform proper module path sanity checking if a user specified a custom path to the uprobes module, used when performing user-space probing ('staprun -u'). A local user who is a member of the stapusr group could use this flaw to bypass intended module-loading restrictions, allowing them to escalate their privileges by loading an arbitrary, unsigned module. (CVE-2011-2502)

A race condition flaw was found in the way the staprun utility performed module loading. A local user who is a member of the stapusr group could use this flaw to modify a signed module while it is being loaded, allowing them to escalate their privileges. (CVE-2011-2503)

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

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?3fc4b19d

Plugin Details

Severity: Medium

ID: 61097

File Name: sl_20110725_systemtap_on_SL6_x.nasl

Version: 1.5

Type: local

Agent: unix

Published: 8/1/2012

Updated: 1/14/2021

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.4

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

Vulnerability Information

CPE: x-cpe:/o:fermilab:scientific_linux

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

Patch Publication Date: 7/25/2011

Reference Information

CVE: CVE-2011-2502, CVE-2011-2503