Ubuntu 6.06 LTS / 8.04 LTS / 9.10 / 10.04 LTS / 10.10 : exim4 vulnerabilities (USN-1060-1) - Nessus

Medium Plugin ID: 51954

This page contains detailed information about the Ubuntu 6.06 LTS / 8.04 LTS / 9.10 / 10.04 LTS / 10.10 : exim4 vulnerabilities (USN-1060-1) 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: 51954
Name: Ubuntu 6.06 LTS / 8.04 LTS / 9.10 / 10.04 LTS / 10.10 : exim4 vulnerabilities (USN-1060-1)
Filename: ubuntu_USN-1060-1.nasl
Vulnerability Published: 2010-06-07
This Plugin Published: 2011-02-11
Last Modification Time: 2022-03-28
Plugin Version: 1.12
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

Synopsis

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

Description

It was discovered that Exim contained a design flaw in the way it processed alternate configuration files. An attacker that obtained privileges of the 'Debian-exim' user could use an alternate configuration file to obtain root privileges. (CVE-2010-4345)

It was discovered that Exim incorrectly handled certain return values when handling logging. An attacker that obtained privileges of the 'Debian-exim' user could use this flaw to obtain root privileges. (CVE-2011-0017)

Dan Rosenberg discovered that Exim incorrectly handled writable sticky-bit mail directories. If Exim were configured in this manner, a local user could use this flaw to cause a denial of service or possibly gain privileges. This issue only applied to Ubuntu 6.06 LTS, 8.04 LTS, 9.10, and 10.04 LTS. (CVE-2010-2023)

Dan Rosenberg discovered that Exim incorrectly handled MBX locking. If Exim were configured in this manner, a local user could use this flaw to cause a denial of service or possibly gain privileges. This issue only applied to Ubuntu 6.06 LTS, 8.04 LTS, 9.10, and 10.04 LTS. (CVE-2010-2024).

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)
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 / 10.04 LTS / 10.10 : exim4 vulnerabilities (USN-1060-1) vulnerability:

Metasploit: exploit/unix/smtp/exim4_string_format
[Exim4 string_format Function Heap Buffer Overflow]
Exploit-DB: exploits/linux/remote/16925.rb
[EDB-16925: Exim4 < 4.69 - string_format Function Heap Buffer Overflow (Metasploit)]

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-1060-1.nasl nessus plugin source code. Ubuntu Security Notice (C) 2011-2022 Canonical, Inc. / NASL script (C) 2011-2022 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-1060-1. 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(51954);
  script_version("1.12");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/03/28");

  script_cve_id(
    "CVE-2010-2023",
    "CVE-2010-2024",
    "CVE-2010-4345",
    "CVE-2011-0017"
  );
  script_bugtraq_id(
    40451,
    40454,
    45341,
    46065
  );
  script_xref(name:"USN", value:"1060-1");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/04/15");

  script_name(english:"Ubuntu 6.06 LTS / 8.04 LTS / 9.10 / 10.04 LTS / 10.10 : exim4 vulnerabilities (USN-1060-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security-related
patches.");
  script_set_attribute(attribute:"description", value:
"It was discovered that Exim contained a design flaw in the way it
processed alternate configuration files. An attacker that obtained
privileges of the 'Debian-exim' user could use an alternate
configuration file to obtain root privileges. (CVE-2010-4345)

It was discovered that Exim incorrectly handled certain return values
when handling logging. An attacker that obtained privileges of the
'Debian-exim' user could use this flaw to obtain root privileges.
(CVE-2011-0017)

Dan Rosenberg discovered that Exim incorrectly handled writable
sticky-bit mail directories. If Exim were configured in this manner, a
local user could use this flaw to cause a denial of service or
possibly gain privileges. This issue only applied to Ubuntu 6.06 LTS,
8.04 LTS, 9.10, and 10.04 LTS. (CVE-2010-2023)

Dan Rosenberg discovered that Exim incorrectly handled MBX locking. If
Exim were configured in this manner, a local user could use this flaw
to cause a denial of service or possibly gain privileges. This issue
only applied to Ubuntu 6.06 LTS, 8.04 LTS, 9.10, and 10.04 LTS.
(CVE-2010-2024).

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/1060-1/");
  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_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:'Exim4 string_format Function Heap Buffer Overflow');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2010/06/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/02/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/02/11");

  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:10.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:10.10");
  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) 2011-2022 Canonical, Inc. / NASL script (C) 2011-2022 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|10\.04|10\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 6.06 / 8.04 / 9.10 / 10.04 / 10.10", "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:"4.60-3ubuntu3.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"exim4-base", pkgver:"4.60-3ubuntu3.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"exim4-config", pkgver:"4.60-3ubuntu3.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"exim4-daemon-custom", pkgver:"4.60-3ubuntu3.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"exim4-daemon-heavy", pkgver:"4.60-3ubuntu3.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"exim4-daemon-light", pkgver:"4.60-3ubuntu3.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"eximon4", pkgver:"4.60-3ubuntu3.3")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4", pkgver:"4.69-2ubuntu0.3")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4-base", pkgver:"4.69-2ubuntu0.3")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4-config", pkgver:"4.69-2ubuntu0.3")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4-daemon-custom", pkgver:"4.69-2ubuntu0.3")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4-daemon-heavy", pkgver:"4.69-2ubuntu0.3")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4-daemon-heavy-dbg", pkgver:"4.69-2ubuntu0.3")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4-daemon-light", pkgver:"4.69-2ubuntu0.3")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4-daemon-light-dbg", pkgver:"4.69-2ubuntu0.3")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4-dbg", pkgver:"4.69-2ubuntu0.3")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"exim4-dev", pkgver:"4.69-2ubuntu0.3")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"eximon4", pkgver:"4.69-2ubuntu0.3")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4", pkgver:"4.69-11ubuntu4.2")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4-base", pkgver:"4.69-11ubuntu4.2")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4-config", pkgver:"4.69-11ubuntu4.2")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4-daemon-custom", pkgver:"4.69-11ubuntu4.2")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4-daemon-heavy", pkgver:"4.69-11ubuntu4.2")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4-daemon-heavy-dbg", pkgver:"4.69-11ubuntu4.2")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4-daemon-light", pkgver:"4.69-11ubuntu4.2")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4-daemon-light-dbg", pkgver:"4.69-11ubuntu4.2")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4-dbg", pkgver:"4.69-11ubuntu4.2")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"exim4-dev", pkgver:"4.69-11ubuntu4.2")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"eximon4", pkgver:"4.69-11ubuntu4.2")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"exim4", pkgver:"4.71-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"exim4-base", pkgver:"4.71-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"exim4-config", pkgver:"4.71-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"exim4-daemon-custom", pkgver:"4.71-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"exim4-daemon-heavy", pkgver:"4.71-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"exim4-daemon-heavy-dbg", pkgver:"4.71-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"exim4-daemon-light", pkgver:"4.71-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"exim4-daemon-light-dbg", pkgver:"4.71-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"exim4-dbg", pkgver:"4.71-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"exim4-dev", pkgver:"4.71-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"eximon4", pkgver:"4.71-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"exim4", pkgver:"4.72-1ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"exim4-base", pkgver:"4.72-1ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"exim4-config", pkgver:"4.72-1ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"exim4-daemon-custom", pkgver:"4.72-1ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"exim4-daemon-heavy", pkgver:"4.72-1ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"exim4-daemon-heavy-dbg", pkgver:"4.72-1ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"exim4-daemon-light", pkgver:"4.72-1ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"exim4-daemon-light-dbg", pkgver:"4.72-1ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"exim4-dbg", pkgver:"4.72-1ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"exim4-dev", pkgver:"4.72-1ubuntu1.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"eximon4", pkgver:"4.72-1ubuntu1.1")) 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, "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-1060-1.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\ubuntu_USN-1060-1.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/ubuntu_USN-1060-1.nasl

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How to Run

Here is how to run the Ubuntu 6.06 LTS / 8.04 LTS / 9.10 / 10.04 LTS / 10.10 : exim4 vulnerabilities (USN-1060-1) 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 6.06 LTS / 8.04 LTS / 9.10 / 10.04 LTS / 10.10 : exim4 vulnerabilities (USN-1060-1) plugin ID 51954.
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-1060-1.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a ubuntu_USN-1060-1.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-1060-1.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-1060-1.nasl -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID:

40451, 40454, 45341, 46065

USN | Ubuntu Security Notice:

1060-1

See also:

Similar and related Nessus plugins:

51785 - CentOS 4 / 5 : exim (CESA-2011:0153)
51819 - Debian DSA-2154-1 : exim4 - privilege escalation
51446 - FreeBSD : exim -- local privilege escalation (e4fcf020-0447-11e0-becc-0022156e8794)
72159 - GLSA-201401-32 : Exim: Multiple vulnerabilities
68180 - Oracle Linux 4 / 5 : exim (ELSA-2011-0153)
51562 - RHEL 4 / 5 : exim (RHSA-2011:0153)
60936 - 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-1060-1.nasl version 1.12. For more plugins, visit the Nessus Plugin Library.

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Ubuntu 6.06 LTS / 8.04 LTS / 9.10 / 10.04 LTS / 10.10 : exim4 vulnerabilities (USN-1060-1) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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