Executive Summary

Summary
Title PolicyKit: Multiple vulnerabilities
Informations
Name GLSA-201204-06 First vendor Publication 2012-04-17
Vendor Gentoo Last vendor Modification 2012-04-17
Severity (Vendor) High 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:M/Au:N/C:C/I:C/A:C)
Cvss Base Score 6.9 Attack Range Local
Cvss Impact Score 10 Attack Complexity Medium
Cvss Expoit Score 3.4 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

Multiple vulnerabilities have been found in PolicyKit, the worst of which may allow a local attacker to gain root privileges.

Background

PolicyKit is a toolkit for controlling privileges for system-wide services.

Description

Multiple vulnerabilities have been found in PolicyKit:

* Error messages in the pkexec utility disclose the existence of local files (CVE-2010-0750).
* The pkexec utility initially checks the effective user ID of its parent process for authorization, instead of checking the real user ID (CVE-2011-1485).
* Members of the "wheel" group are able to execute commands as an administrator without a password (CVE-2011-4945).

Impact

A local attacker could gain elevated privileges or sensitive information.

Workaround

There is no known workaround at this time.

Resolution

All PolicyKit users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-auth/polkit-0.104-r1"

References

[ 1 ] CVE-2010-0750 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-0750
[ 2 ] CVE-2011-1485 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1485
[ 3 ] CVE-2011-4945 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4945

Availability

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

http://security.gentoo.org/glsa/glsa-201204-06.xml

Original Source

Url : http://security.gentoo.org/glsa/glsa-201204-06.xml

CWE : Common Weakness Enumeration

% Id Name
33 % CWE-362 Race Condition
33 % CWE-264 Permissions, Privileges, and Access Controls
33 % CWE-200 Information Exposure

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:13758
 
Oval ID: oval:org.mitre.oval:def:13758
Title: USN-1117-1 -- policykit-1 vulnerability
Description: policykit-1: framework for managing administrative policies and privileges Local users could gain root access by using the pkexec tool in PolicyKit.
Family: unix Class: patch
Reference(s): USN-1117-1
CVE-2011-1485
 Version: 5
Platform(s): Ubuntu 10.10
Ubuntu 9.10
Ubuntu 10.04
 Product(s): policykit-1
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:15134
 
Oval ID: oval:org.mitre.oval:def:15134
Title: DSA-2319-1 policykit-1 -- race condition
Description: Neel Mehta discovered that a race condition in Policykit, a framework for managing administrative policies and privileges, allowed local users to elevate privileges by executing a setuid program from pkexec. The oldstable distribution does not contain the policykit-1 package.
Family: unix Class: patch
Reference(s): DSA-2319-1
CVE-2011-1485
 Version: 5
Platform(s): Debian GNU/Linux 6.0
Debian GNU/kFreeBSD 6.0
 Product(s): policykit-1
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:21671
 
Oval ID: oval:org.mitre.oval:def:21671
Title: RHSA-2011:0455: polkit security update (Important)
Description: Race condition in the pkexec utility and polkitd daemon in PolicyKit (aka polkit) 0.96 allows local users to gain privileges by executing a setuid program from pkexec, related to the use of the effective user ID instead of the real user ID.
Family: unix Class: patch
Reference(s): RHSA-2011:0455-01
CVE-2011-1485
 Version: 4
Platform(s): Red Hat Enterprise Linux 6
 Product(s): polkit
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:23637
 
Oval ID: oval:org.mitre.oval:def:23637
Title: ELSA-2011:0455: polkit security update (Important)
Description: Race condition in the pkexec utility and polkitd daemon in PolicyKit (aka polkit) 0.96 allows local users to gain privileges by executing a setuid program from pkexec, related to the use of the effective user ID instead of the real user ID.
Family: unix Class: patch
Reference(s): ELSA-2011:0455-01
CVE-2011-1485
 Version: 6
Platform(s): Oracle Linux 6
 Product(s): polkit
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:27796
 
Oval ID: oval:org.mitre.oval:def:27796
Title: DEPRECATED: ELSA-2011-0455 -- polkit security update (important)
Description: [0.96-2.el6_0.1] - Include fixes for CVE-2011-1485 - Resolves: #692941
Family: unix Class: patch
Reference(s): ELSA-2011-0455
CVE-2011-1485
 Version: 4
Platform(s): Oracle Linux 6
 Product(s): polkit
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 1
Application 1

ExploitDB Exploits

id Description
2014-10-20 Linux PolicyKit Race Condition Privilege Escalation
2011-10-08 pkexec Race Condition Privilege Escalation Exploit
2011-10-05 PolicyKit Pwnage: linux local privilege escalation on polkit-1 <= 0.101

OpenVAS Exploits

Date Description
2012-06-06 Name : RedHat Update for polkit RHSA-2011:0455-01
File : nvt/gb_RHSA-2011_0455-01_polkit.nasl
2012-04-30 Name : Gentoo Security Advisory GLSA 201204-06 (polkit)
File : nvt/glsa_201204_06.nasl
2011-10-16 Name : Debian Security Advisory DSA 2319-1 (policykit-1)
File : nvt/deb_2319_1.nasl
2011-05-17 Name : Fedora Update for polkit FEDORA-2011-5676
File : nvt/gb_fedora_2011_5676_polkit_fc14.nasl
2011-05-17 Name : Mandriva Update for polkit MDVSA-2011:086 (polkit)
File : nvt/gb_mandriva_MDVSA_2011_086.nasl
2011-05-10 Name : Ubuntu Update for policykit-1 USN-1117-1
File : nvt/gb_ubuntu_USN_1117_1.nasl
0000-00-00 Name : Slackware Advisory SSA:2011-109-01 polkit
File : nvt/esoft_slk_ssa_2011_109_01.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
72261 PolicyKit pkexec Parent Process Race Condition Local Privilege Escalation

PolicyKit contains a flaw related to determining the privileges of the parent process. This may allow a local attacker to gain root privileges.
63549 PolicyKit libpolkit pkexec pkexec.c Arbitrary Local File Enumeration

PolicyKit contains a flaw that may lead to an unauthorized information disclosure.  The issue is triggered when the pkexec command is called with the path of a file as parameter, which will disclose existence of a file normally hidden to the user to a local attacker.

Nessus® Vulnerability Scanner

Date Description
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : suse_11_3_libpolkit0-110427.nasl - Type : ACT_GATHER_INFO
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : suse_11_4_libpolkit0-110427.nasl - Type : ACT_GATHER_INFO
2013-07-12 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2011-0455.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20110419_polkit_on_SL6_x.nasl - Type : ACT_GATHER_INFO
2012-06-21 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201204-06.nasl - Type : ACT_GATHER_INFO
2011-10-10 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-2319.nasl - Type : ACT_GATHER_INFO
2011-06-13 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-1117-1.nasl - Type : ACT_GATHER_INFO
2011-05-28 Name : The remote Slackware host is missing a security update.
File : Slackware_SSA_2011-109-01.nasl - Type : ACT_GATHER_INFO
2011-05-16 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2011-086.nasl - Type : ACT_GATHER_INFO
2011-05-10 Name : The remote Fedora host is missing a security update.
File : fedora_2011-5676.nasl - Type : ACT_GATHER_INFO
2011-04-23 Name : The remote Fedora host is missing a security update.
File : fedora_2011-5589.nasl - Type : ACT_GATHER_INFO
2011-04-20 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2011-0455.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2014-02-17 11:37:19
  • Multiple Updates