Ubuntu 6.06 LTS / 8.04 LTS / 9.10 : exim4 vulnerability (USN-1032-1) - Nessus

High   Plugin ID: 51136

This page contains detailed information about the Ubuntu 6.06 LTS / 8.04 LTS / 9.10 : exim4 vulnerability (USN-1032-1) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Plugin Overview


ID: 51136
Name: Ubuntu 6.06 LTS / 8.04 LTS / 9.10 : exim4 vulnerability (USN-1032-1)
Filename: ubuntu_USN-1032-1.nasl
Vulnerability Published: 2010-12-14
This Plugin Published: 2010-12-12
Last Modification Time: 2022-03-28
Plugin Version: 1.17
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: High
Vulnerability Published: 2010-12-14
Patch Published: 2010-12-10
CVE [?]: CVE-2010-4344
CPE [?]: cpe:/o:canonical:ubuntu_linux:6.06:-:lts, cpe:/o:canonical:ubuntu_linux:8.04:-:lts, cpe:/o:canonical:ubuntu_linux:9.10, p-cpe:/a:canonical:ubuntu_linux:exim4, p-cpe:/a:canonical:ubuntu_linux:exim4-base, p-cpe:/a:canonical:ubuntu_linux:exim4-config, p-cpe:/a:canonical:ubuntu_linux:exim4-daemon-custom, p-cpe:/a:canonical:ubuntu_linux:exim4-daemon-heavy, p-cpe:/a:canonical:ubuntu_linux:exim4-daemon-heavy-dbg, p-cpe:/a:canonical:ubuntu_linux:exim4-daemon-light, p-cpe:/a:canonical:ubuntu_linux:exim4-daemon-light-dbg, p-cpe:/a:canonical:ubuntu_linux:exim4-dbg, p-cpe:/a:canonical:ubuntu_linux:exim4-dev, p-cpe:/a:canonical:ubuntu_linux:eximon4

Synopsis

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

Description

Sergey Kononenko and Eugene Bujak discovered that Exim did not correctly truncate string expansions. A remote attacker could send specially crafted email traffic to run arbitrary code as the Exim user, which could also lead to root privileges.

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 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 Ubuntu 6.06 LTS / 8.04 LTS / 9.10 : exim4 vulnerability (USN-1032-1) vulnerability:

  1. Metasploit: exploit/unix/smtp/exim4_string_format
    [Exim4 string_format Function Heap Buffer Overflow]
  2. Exploit-DB: exploits/linux/remote/16925.rb
    [EDB-16925: Exim4 < 4.69 - string_format Function Heap Buffer Overflow (Metasploit)]
  3. GitHub: https://github.com/byte-mug/cumes
    [CVE-2010-4344]
  4. 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:N/AC:M/Au:N/C:C/I:C/A:C/E:F/RL:OF/RC:C
CVSS Base Score:9.3 (High)
Impact Subscore:10.0
Exploitability Subscore:8.6
CVSS Temporal Score:7.7 (High)
CVSS Environmental Score:NA (None)
Modified Impact Subscore:NA
Overall CVSS Score:7.7 (High)

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Plugin Source


This is the ubuntu_USN-1032-1.nasl nessus plugin source code. Ubuntu Security Notice (C) 2010-2022 Canonical, Inc. / NASL script (C) 2010-2022 and is owned by Tenable, Inc. or an Affiliate thereof.

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-1032-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

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

if (description)
{
  script_id(51136);
  script_version("1.17");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/03/28");

  script_cve_id("CVE-2010-4344");
  script_bugtraq_id(45308);
  script_xref(name:"USN", value:"1032-1");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/04/15");

  script_name(english:"Ubuntu 6.06 LTS / 8.04 LTS / 9.10 : exim4 vulnerability (USN-1032-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security-related
patches.");
  script_set_attribute(attribute:"description", value:
"Sergey Kononenko and Eugene Bujak discovered that Exim did not
correctly truncate string expansions. A remote attacker could send
specially crafted email traffic to run arbitrary code as the Exim
user, which could also lead to root privileges.

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/1032-1/");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/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:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Exim4 string_format Function Heap Buffer Overflow');
  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:"vuln_publication_date", value:"2010/12/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2010/12/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2010/12/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:exim4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:exim4-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:exim4-config");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:exim4-daemon-custom");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:exim4-daemon-heavy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:exim4-daemon-heavy-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:exim4-daemon-light");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:exim4-daemon-light-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:exim4-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:exim4-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:eximon4");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:6.06:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:8.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:9.10");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Ubuntu Local Security Checks");

  script_copyright(english:"Ubuntu Security Notice (C) 2010-2022 Canonical, Inc. / NASL script (C) 2010-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  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:"^(6\.06|8\.04|9\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 6.06 / 8.04 / 9.10", "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:"6.06", pkgname:"exim4", pkgver:"4.60-3ubuntu3.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"exim4-base", pkgver:"4.60-3ubuntu3.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"exim4-config", pkgver:"4.60-3ubuntu3.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"exim4-daemon-custom", pkgver:"4.60-3ubuntu3.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"exim4-daemon-heavy", pkgver:"4.60-3ubuntu3.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"exim4-daemon-light", pkgver:"4.60-3ubuntu3.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"eximon4", pkgver:"4.60-3ubuntu3.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4", pkgver:"4.69-2ubuntu0.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4-base", pkgver:"4.69-2ubuntu0.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4-config", pkgver:"4.69-2ubuntu0.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4-daemon-custom", pkgver:"4.69-2ubuntu0.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4-daemon-heavy", pkgver:"4.69-2ubuntu0.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4-daemon-heavy-dbg", pkgver:"4.69-2ubuntu0.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4-daemon-light", pkgver:"4.69-2ubuntu0.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4-daemon-light-dbg", pkgver:"4.69-2ubuntu0.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4-dbg", pkgver:"4.69-2ubuntu0.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4-dev", pkgver:"4.69-2ubuntu0.2")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"eximon4", pkgver:"4.69-2ubuntu0.2")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4", pkgver:"4.69-11ubuntu4.1")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4-base", pkgver:"4.69-11ubuntu4.1")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4-config", pkgver:"4.69-11ubuntu4.1")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4-daemon-custom", pkgver:"4.69-11ubuntu4.1")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4-daemon-heavy", pkgver:"4.69-11ubuntu4.1")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4-daemon-heavy-dbg", pkgver:"4.69-11ubuntu4.1")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4-daemon-light", pkgver:"4.69-11ubuntu4.1")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4-daemon-light-dbg", pkgver:"4.69-11ubuntu4.1")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4-dbg", pkgver:"4.69-11ubuntu4.1")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4-dev", pkgver:"4.69-11ubuntu4.1")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"eximon4", pkgver:"4.69-11ubuntu4.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    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, "exim4 / exim4-base / exim4-config / exim4-daemon-custom / etc");
}

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-1032-1.nasl
  • Windows:
    C:\ProgramData\Tenable\Nessus\nessus\plugins\ubuntu_USN-1032-1.nasl
  • Mac OS X:
    /Library/Nessus/run/lib/nessus/plugins/ubuntu_USN-1032-1.nasl

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How to Run


Here is how to run the Ubuntu 6.06 LTS / 8.04 LTS / 9.10 : exim4 vulnerability (USN-1032-1) as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

  1. Click to start a New Scan.
  2. Select Advanced Scan.
  3. Navigate to the Plugins tab.
  4. On the top right corner click to Disable All plugins.
  5. On the left side table select Ubuntu Local Security Checks plugin family.
  6. On the right side table select Ubuntu 6.06 LTS / 8.04 LTS / 9.10 : exim4 vulnerability (USN-1032-1) plugin ID 51136.
  7. Specify the target on the Settings tab and click to Save the scan.
  8. 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-1032-1.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a ubuntu_USN-1032-1.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-1032-1.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-1032-1.nasl -t <IP/HOST>

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References


BID | SecurityFocus Bugtraq ID: USN | Ubuntu Security Notice: See also: Similar and related Nessus plugins:
  • 51780 - CentOS 4 : exim (CESA-2010:0970)
  • 51128 - Debian DSA-2131-1 : exim4 - arbitrary code execution
  • 51179 - Exim string_format Function Remote Overflow
  • 72159 - GLSA-201401-32 : Exim: Multiple vulnerabilities
  • 68160 - Oracle Linux 4 / 5 : exim (ELSA-2010-0970)
  • 51133 - RHEL 4 / 5 : exim (RHSA-2010:0970)
  • 60919 - Scientific Linux Security Update : exim on SL4.x, SL5.x i386/x86_64
  • 53657 - openSUSE Security Update : exim (openSUSE-SU-2010:1052-1)
  • 53715 - openSUSE Security Update : exim (openSUSE-SU-2010:1052-1)
  • 75481 - openSUSE Security Update : exim (openSUSE-SU-2010:1052-1)

Version


This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file ubuntu_USN-1032-1.nasl version 1.17. For more plugins, visit the Nessus Plugin Library.

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