Ubuntu 8.04 LTS / 10.04 LTS / 11.10 / 12.04 LTS / 12.10 : sudo vulnerability (USN-1754-1) - Nessus

Medium Plugin ID: 64969

This page contains detailed information about the Ubuntu 8.04 LTS / 10.04 LTS / 11.10 / 12.04 LTS / 12.10 : sudo vulnerability (USN-1754-1) 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: 64969
Name: Ubuntu 8.04 LTS / 10.04 LTS / 11.10 / 12.04 LTS / 12.10 : sudo vulnerability (USN-1754-1)
Filename: ubuntu_USN-1754-1.nasl
Vulnerability Published: 2013-03-05
This Plugin Published: 2013-03-01
Last Modification Time: 2019-09-19
Plugin Version: 1.11
Plugin Type: local
Plugin Family: Ubuntu Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Vulnerability Information

Severity: Medium
Vulnerability Published: 2013-03-05
Patch Published: 2013-02-28
CVE [?]: CVE-2013-1775
CPE [?]: cpe:/o:canonical:ubuntu_linux:8.04:-:lts, cpe:/o:canonical:ubuntu_linux:10.04:-:lts, cpe:/o:canonical:ubuntu_linux:11.10, cpe:/o:canonical:ubuntu_linux:12.04:-:lts, cpe:/o:canonical:ubuntu_linux:12.10, p-cpe:/a:canonical:ubuntu_linux:sudo, p-cpe:/a:canonical:ubuntu_linux:sudo-ldap

Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

Marco Schoepl discovered that Sudo incorrectly handled time stamp files when the system clock is set to epoch. A local attacker could use this issue to run Sudo commands without a password prompt.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected sudo and / or sudo-ldap packages.

Public Exploits

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

Here's the list of publicly known exploits and PoCs for verifying the Ubuntu 8.04 LTS / 10.04 LTS / 11.10 / 12.04 LTS / 12.10 : sudo vulnerability (USN-1754-1) vulnerability:

Metasploit: exploit/osx/local/sudo_password_bypass
[Mac OS X Sudo Password Bypass]
Exploit-DB: exploits/osx/local/27944.rb
[EDB-27944: Apple Mac OSX - Sudo Password Bypass (Metasploit)]
GitHub: https://github.com/bekhzod0725/perl-CVE-2013-1775
[CVE-2013-1775: CVE-2013-1775 Exploit written in Perl]
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/E:F/RL:OF/RC:C

CVSS Base Score:	6.9 (Medium)
Impact Subscore:	10.0
Exploitability Subscore:	3.4
CVSS Temporal Score:	5.7 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	5.7 (Medium)

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Plugin Source

This is the ubuntu_USN-1754-1.nasl nessus plugin source code. Ubuntu Security Notice (C) 2013-2019 Canonical, Inc. / NASL script (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-1754-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(64969);
  script_version("1.11");
  script_cvs_date("Date: 2019/09/19 12:54:29");

  script_cve_id("CVE-2013-1775");
  script_bugtraq_id(58203);
  script_xref(name:"USN", value:"1754-1");

  script_name(english:"Ubuntu 8.04 LTS / 10.04 LTS / 11.10 / 12.04 LTS / 12.10 : sudo vulnerability (USN-1754-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Marco Schoepl discovered that Sudo incorrectly handled time stamp
files when the system clock is set to epoch. A local attacker could
use this issue to run Sudo commands without a password prompt.

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://usn.ubuntu.com/1754-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected sudo and / or sudo-ldap packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Mac OS X Sudo Password Bypass');
  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:"p-cpe:/a:canonical:ubuntu_linux:sudo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:sudo-ldap");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:10.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:11.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:8.04:-:lts");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/03/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/02/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/03/01");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2013-2019 Canonical, Inc. / NASL script (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(8\.04|10\.04|11\.10|12\.04|12\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 8.04 / 10.04 / 11.10 / 12.04 / 12.10", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);

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

flag = 0;

if (ubuntu_check(osver:"8.04", pkgname:"sudo", pkgver:"1.6.9p10-1ubuntu3.10")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"sudo-ldap", pkgver:"1.6.9p10-1ubuntu3.10")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"sudo", pkgver:"1.7.2p1-1ubuntu5.6")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"sudo-ldap", pkgver:"1.7.2p1-1ubuntu5.6")) flag++;
if (ubuntu_check(osver:"11.10", pkgname:"sudo", pkgver:"1.7.4p6-1ubuntu2.2")) flag++;
if (ubuntu_check(osver:"11.10", pkgname:"sudo-ldap", pkgver:"1.7.4p6-1ubuntu2.2")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"sudo", pkgver:"1.8.3p1-1ubuntu3.4")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"sudo-ldap", pkgver:"1.8.3p1-1ubuntu3.4")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"sudo", pkgver:"1.8.5p2-1ubuntu1.1")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"sudo-ldap", pkgver:"1.8.5p2-1ubuntu1.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "sudo / sudo-ldap");
}

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

Linux / Unix:
/opt/nessus/lib/nessus/plugins/ubuntu_USN-1754-1.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\ubuntu_USN-1754-1.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/ubuntu_USN-1754-1.nasl

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How to Run

Here is how to run the Ubuntu 8.04 LTS / 10.04 LTS / 11.10 / 12.04 LTS / 12.10 : sudo vulnerability (USN-1754-1) 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 Ubuntu Local Security Checks plugin family.
On the right side table select Ubuntu 8.04 LTS / 10.04 LTS / 11.10 / 12.04 LTS / 12.10 : sudo vulnerability (USN-1754-1) plugin ID 64969.
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 ubuntu_USN-1754-1.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a ubuntu_USN-1754-1.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - ubuntu_USN-1754-1.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 ubuntu_USN-1754-1.nasl -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID:

58203

USN | Ubuntu Security Notice:

1754-1

See also:

Similar and related Nessus plugins:

71399 - Amazon Linux AMI : sudo (ALAS-2013-259)
79154 - CentOS 5 : sudo (CESA-2013:1353)
79173 - CentOS 6 : sudo (CESA-2013:1701)
65179 - Debian DSA-2642-1 : sudo - several issues
65619 - Fedora 17 : sudo-1.8.6p7-1.fc17 (2013-3270)
65590 - Fedora 18 : sudo-1.8.6p7-1.fc18 (2013-3297)
64987 - FreeBSD : sudo -- Authentication bypass when clock is reset (764344fb-8214-11e2-9273-902b343deec9)
72078 - GLSA-201401-23 : sudo: Privilege escalation
85408 - Mac OS X 10.10.x < 10.10.5 Multiple Vulnerabilities
69877 - Mac OS X 10.8.x < 10.8.5 Multiple Vulnerabilities
69878 - Mac OS X Multiple Vulnerabilities (Security Update 2013-004)
66068 - Mandriva Linux Security Advisory : sudo (MDVSA-2013:054)
154615 - NewStart CGSL CORE 5.04 / MAIN 5.04 : sudo Multiple Vulnerabilities (NS-SA-2021-0101)
154540 - NewStart CGSL MAIN 6.02 : sudo Multiple Vulnerabilities (NS-SA-2021-0120)
74928 - openSUSE Security Update : sudo (openSUSE-SU-2013:0495-1)
70288 - Oracle Linux 5 : sudo (ELSA-2013-1353)
71112 - Oracle Linux 6 : sudo (ELSA-2013-1701)
91755 - OracleVM 3.2 : sudo (OVMSA-2016-0079)
70249 - RHEL 5 : sudo (RHSA-2013:1353)
71017 - RHEL 6 : sudo (RHSA-2013:1701)
70392 - Scientific Linux Security Update : sudo on SL5.x i386/x86_64 (20130930)
71300 - Scientific Linux Security Update : sudo on SL6.x i386/x86_64 (20131121)
65060 - Slackware 12.1 / 12.2 / 13.0 / 13.1 / 13.37 / 14.0 / current : sudo (SSA:2013-065-01)
80779 - Oracle Solaris Third-Party Patch Update : sudo (multiple_permissions_privileges_and_access)
66464 - SuSE 11.2 Security Update : sudo (SAT Patch Number 7705)
66466 - SuSE 10 Security Update : sudo (ZYPP Patch Number 8562)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file ubuntu_USN-1754-1.nasl version 1.11. For more plugins, visit the Nessus Plugin Library.

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Ubuntu 8.04 LTS / 10.04 LTS / 11.10 / 12.04 LTS / 12.10 : sudo vulnerability (USN-1754-1) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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