Scientific Linux Security Update : polkit on SL6.x i386/x86_64 - Nessus

Medium Plugin ID: 61021

This page contains detailed information about the Scientific Linux Security Update : polkit on SL6.x i386/x86_64 Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

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Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 61021
Name: Scientific Linux Security Update : polkit on SL6.x i386/x86_64
Filename: sl_20110419_polkit_on_SL6_x.nasl
Vulnerability Published: N/A
This Plugin Published: 2012-08-01
Last Modification Time: 2021-01-14
Plugin Version: 1.6
Plugin Type: local
Plugin Family: Scientific Linux Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/cpu, Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Vulnerability Information

Severity: Medium
Vulnerability Published: N/A
Patch Published: 2011-04-19
CVE [?]: CVE-2011-1485
CPE [?]: x-cpe:/o:fermilab:scientific_linux

Synopsis

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

Description

A race condition flaw was found in the PolicyKit pkexec utility and polkitd daemon. A local user could use this flaw to appear as a privileged user to pkexec, allowing them to execute arbitrary commands as root by running those commands with pkexec. (CVE-2011-1485)

The system must be rebooted for this update to take effect.

Solution

Update the affected packages.

Public Exploits

Target Network Port(s): N/A
Target Asset(s): N/A
Exploit Available: True (Metasploit Framework, Exploit-DB, GitHub, Immunity Canvas, Core Impact)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the Scientific Linux Security Update : polkit on SL6.x i386/x86_64 vulnerability:

Metasploit: exploit/linux/local/pkexec
[Linux PolicyKit Race Condition Privilege Escalation]
Exploit-DB: exploits/linux/local/17932.c
[EDB-17932: PolicyKit polkit-1 < 0.101 - Local Privilege Escalation]
Exploit-DB: exploits/linux/local/17942.c
[EDB-17942: pkexec - Race Condition Privilege Escalation]
Exploit-DB: exploits/linux/local/35021.rb
[EDB-35021: Linux PolicyKit - Race Condition Privilege Escalation (Metasploit)]
GitHub: https://github.com/Pashkela/CVE-2011-1485
[CVE-2011-1485: CVE-2011-1485 - Published: 2011-04-01 - PolicyKit:]
GitHub: https://github.com/Snoopy-Sec/Localroot-ALL-CVE
[CVE-2011-1485]
GitHub: https://github.com/cedelasen/htb-laboratory
[CVE-2011-1485]
Immunity Canvas: CANVAS

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS V2 Vector [?]: AV:L/AC:M/Au:N/C:C/I:C/A:C

CVSS Base Score:	6.9 (Medium)
Impact Subscore:	10.0
Exploitability Subscore:	3.4
CVSS Temporal Score:	NA (None)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	6.9 (Medium)

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Plugin Source

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(61021);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2011-1485");

  script_name(english:"Scientific Linux Security Update : polkit on SL6.x i386/x86_64");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Scientific Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"A race condition flaw was found in the PolicyKit pkexec utility and
polkitd daemon. A local user could use this flaw to appear as a
privileged user to pkexec, allowing them to execute arbitrary commands
as root by running those commands with pkexec. (CVE-2011-1485)

The system must be rebooted for this update to take effect."
  );
  # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1104&L=scientific-linux-errata&T=0&P=2500
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?f50f44ca"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Linux PolicyKit Race Condition Privilege Escalation');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:'CANVAS');

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/04/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/08/01");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Scientific Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);


flag = 0;
if (rpm_check(release:"SL6", reference:"polkit-0.96-2.el6_0.1")) flag++;
if (rpm_check(release:"SL6", reference:"polkit-desktop-policy-0.96-2.el6_0.1")) flag++;
if (rpm_check(release:"SL6", reference:"polkit-devel-0.96-2.el6_0.1")) flag++;
if (rpm_check(release:"SL6", reference:"polkit-docs-0.96-2.el6_0.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/sl_20110419_polkit_on_SL6_x.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\sl_20110419_polkit_on_SL6_x.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/sl_20110419_polkit_on_SL6_x.nasl

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How to Run

Here is how to run the Scientific Linux Security Update : polkit on SL6.x i386/x86_64 as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select Scientific Linux Local Security Checks plugin family.
On the right side table select Scientific Linux Security Update : polkit on SL6.x i386/x86_64 plugin ID 61021.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl sl_20110419_polkit_on_SL6_x.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a sl_20110419_polkit_on_SL6_x.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - sl_20110419_polkit_on_SL6_x.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state sl_20110419_polkit_on_SL6_x.nasl -t <IP/HOST>

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References

See also:

Similar and related Nessus plugins:

56414 - Debian DSA-2319-1 : policykit-1 - race condition
53537 - Fedora 15 : polkit-0.101-5.fc15 (2011-5589)
53849 - Fedora 14 : polkit-0.98-5.fc14 (2011-5676)
59622 - GLSA-201204-06 : PolicyKit: Multiple vulnerabilities
53910 - Mandriva Linux Security Advisory : polkit (MDVSA-2011:086)
68258 - Oracle Linux 6 : polkit (ELSA-2011-0455)
122573 - OracleVM 3.3 / 3.4 : polkit (OVMSA-2019-0008)
53500 - RHEL 6 : polkit (RHSA-2011:0455)
54903 - Slackware 13.1 / current : polkit (SSA:2011-109-01)
75605 - openSUSE Security Update : libpolkit0 (openSUSE-SU-2011:0412-1)
75915 - openSUSE Security Update : libpolkit0 (openSUSE-SU-2011:0413-1)
55075 - Ubuntu 9.10 / 10.04 LTS / 10.10 : policykit-1 vulnerability (USN-1117-1)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file sl_20110419_polkit_on_SL6_x.nasl version 1.6. For more plugins, visit the Nessus Plugin Library.

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Scientific Linux Security Update : polkit on SL6.x i386/x86_64 - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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