Executive Summary

Summary
Title chkrootkit: Local privilege escalation
Informations
Name GLSA-201709-05 First vendor Publication 2017-09-17
Vendor Gentoo Last vendor Modification 2017-09-17
Severity (Vendor) N/A Revision N/A

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:H/Au:N/C:P/I:P/A:P)
Cvss Base Score 3.7 Attack Range Local
Cvss Impact Score 6.4 Attack Complexity High
Cvss Expoit Score 1.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

A vulnerability in chkrootkit may allow local users to gain root privileges.

Background

chkrootkit is a tool to locally check for signs of a rootkit.

Description

When /tmp is mounted without the noexec option chkrootkit will execute files in /tmp with root privileges.

Impact

A local attacker could possibly execute arbitrary code with root privileges.

Workaround

Users should mount /tmp with noexec option.

Resolution

All chkrootkit users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-forensics/chkrootkit-0.50"

References

[ 1 ] CVE-2014-0476 : https://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-0476

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

https://security.gentoo.org/glsa/201709-05

Original Source

Url : http://security.gentoo.org/glsa/glsa-201709-05.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-20 Improper Input Validation

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:24726
 
Oval ID: oval:org.mitre.oval:def:24726
Title: USN-2230-1 -- chkrootkit vulnerability
Description: chkrootkit could be made to run programs as an administrator.
Family: unix Class: patch
Reference(s): USN-2230-1
CVE-2014-0476
Version: 3
Platform(s): Ubuntu 14.04
Ubuntu 13.10
Ubuntu 12.04
Ubuntu 10.04
Product(s): chkrootkit
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:24785
 
Oval ID: oval:org.mitre.oval:def:24785
Title: DSA-2945-1 chkrootkit - security update
Description: Thomas Stangner discovered a vulnerability in chkrootkit, a rootkit detector, which may allow local attackers to gain root access when /tmp is mounted without the noexec option.
Family: unix Class: patch
Reference(s): DSA-2945-1
CVE-2014-0476
Version: 3
Platform(s): Debian GNU/Linux 7.0
Debian GNU/kFreeBSD 7.0
Product(s): chkrootkit
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 4

Nessus® Vulnerability Scanner

Date Description
2017-09-18 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201709-05.nasl - Type : ACT_GATHER_INFO
2014-10-12 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2014-370.nasl - Type : ACT_GATHER_INFO
2014-06-13 Name : The remote Fedora host is missing a security update.
File : fedora_2014-7071.nasl - Type : ACT_GATHER_INFO
2014-06-13 Name : The remote Fedora host is missing a security update.
File : fedora_2014-7090.nasl - Type : ACT_GATHER_INFO
2014-06-12 Name : The remote Mandriva Linux host is missing a security update.
File : mandriva_MDVSA-2014-122.nasl - Type : ACT_GATHER_INFO
2014-06-05 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-2230-1.nasl - Type : ACT_GATHER_INFO
2014-06-04 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-2945.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
Date Informations
2017-09-19 13:25:09
  • Multiple Updates
2017-09-17 21:23:28
  • First insertion