Executive Summary

Summary
Title mcstrans security and bug fix update
Informations
Name RHSA-2007:0542 First vendor Publication 2007-11-07
Vendor RedHat Last vendor Modification 2007-11-07
Severity (Vendor) Low Revision 05

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:M/Au:N/C:N/I:N/A:P)
Cvss Base Score 1.9 Attack Range Local
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 3.4 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

An updated mcstrans package that fixes a security issue and a bug is now available.

This update has been rated as having low security impact by the Red Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

3. Problem description:

mcstrans is the translation daemon used on SELinux machines to translate program context into human readable form.

An algorithmic complexity weakness was found in the way the mcstrans daemon handled ranges of compartments in sensitivity labels. A local user could trigger this flaw causing mctransd to temporarily stop responding to other requests; a partial denial of service. (CVE-2007-4570)

This update also fixes a problem where the mcstrans daemon was preventing SSH connections into an SELinux box, that was running a Multi-Level Security (MLS) Policy with multiple categories.

Users of mcstrans are advised to upgrade to this updated package, which resolves this issue.

4. Solution:

Before applying this update, make sure that all previously-released errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at http://kbase.redhat.com/faq/FAQ_58_10188

5. Bug IDs fixed (http://bugzilla.redhat.com/):

228398 - LSPP: Not able to ssh into the machine with multiple categories 288201 - CVE-2007-4570 mctransd DoS

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2007-0542.html

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-20 Improper Input Validation

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:10350
 
Oval ID: oval:org.mitre.oval:def:10350
Title: Algorithmic complexity vulnerability in the MCS translation daemon in mcstrans 0.2.3 allows local users to cause a denial of service (temporary daemon outage) via a large range of compartments in sensitivity labels.
Description: Algorithmic complexity vulnerability in the MCS translation daemon in mcstrans 0.2.3 allows local users to cause a denial of service (temporary daemon outage) via a large range of compartments in sensitivity labels.
Family: unix Class: vulnerability
Reference(s): CVE-2007-4570
Version: 5
Platform(s): Red Hat Enterprise Linux 5
CentOS Linux 5
Oracle Linux 5
Product(s):
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:22701
 
Oval ID: oval:org.mitre.oval:def:22701
Title: ELSA-2007:0542: mcstrans security and bug fix update (Low)
Description: Algorithmic complexity vulnerability in the MCS translation daemon in mcstrans 0.2.3 allows local users to cause a denial of service (temporary daemon outage) via a large range of compartments in sensitivity labels.
Family: unix Class: patch
Reference(s): ELSA-2007:0542-05
CVE-2007-4570
Version: 6
Platform(s): Oracle Linux 5
Product(s): mcstrans
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1

Open Source Vulnerability Database (OSVDB)

Id Description
39244 mcstrans Compartment Range DoS

Nessus® Vulnerability Scanner

Date Description
2012-08-01 Name : The remote Scientific Linux host is missing a security update.
File : sl_20071107_mcstrans_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2007-11-08 Name : The remote Red Hat host is missing a security update.
File : redhat-RHSA-2007-0542.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2014-02-17 11:50:48
  • Multiple Updates