Vulnerabilities > CVE-2018-11805 - OS Command Injection vulnerability in multiple products

047910
CVSS 6.7 - MEDIUM
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
HIGH
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
local
low complexity
apache
debian
CWE-78
nessus
NVD
Published: 2019-12-12
Updated: 2024-11-21

Summary

In Apache SpamAssassin before 3.4.3, nefarious CF files can be configured to run system commands without any output or errors. With this, exploits can be injected in a number of scenarios. In addition to upgrading to SA 3.4.3, we recommend that users should only use update channels or 3rd party .cf files from trusted places.

Vulnerable Configurations

Part Description Count
Application
Apache
27
OS
Debian
3

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.
  • Command Delimiters
    An attack of this type exploits a programs' vulnerabilities that allows an attacker's commands to be concatenated onto a legitimate command with the intent of targeting other resources such as the file system or database. The system that uses a filter or a blacklist input validation, as opposed to whitelist validation is vulnerable to an attacker who predicts delimiters (or combinations of delimiters) not present in the filter or blacklist. As with other injection attacks, the attacker uses the command delimiter payload as an entry point to tunnel through the application and activate additional attacks through SQL queries, shell commands, network scanning, and so on.
  • Exploiting Multiple Input Interpretation Layers
    An attacker supplies the target software with input data that contains sequences of special characters designed to bypass input validation logic. This exploit relies on the target making multiples passes over the input data and processing a "layer" of special characters with each pass. In this manner, the attacker can disguise input that would otherwise be rejected as invalid by concealing it with layers of special/escape characters that are stripped off by subsequent processing steps. The goal is to first discover cases where the input validation layer executes before one or more parsing layers. That is, user input may go through the following logic in an application: In such cases, the attacker will need to provide input that will pass through the input validator, but after passing through parser2, will be converted into something that the input validator was supposed to stop.
  • Argument Injection
    An attacker changes the behavior or state of a targeted application through injecting data or command syntax through the targets use of non-validated and non-filtered arguments of exposed services or methods.
  • OS Command Injection
    In this type of an attack, an adversary injects operating system commands into existing application functions. An application that uses untrusted input to build command strings is vulnerable. An adversary can leverage OS command injection in an application to elevate privileges, execute arbitrary commands and compromise the underlying operating system.

Nessus

  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2020-446.NASL
    descriptionThis update for spamassassin fixes the following issues : Security issues fixed : - CVE-2018-11805: Fixed an issue with delimiter handling in rule files related to is_regexp_valid() (bsc#1118987). - CVE-2020-1930: Fixed an issue with rule configuration (.cf) files which can be configured to run system commands (bsc#1162197). - CVE-2020-1931: Fixed an issue with rule configuration (.cf) files which can be configured to run system commands with warnings (bsc#1162200). Non-security issue fixed : - Altering hash requires restarting loop (bsc#862963). This update was imported from the SUSE:SLE-15-SP1:Update update project.
    last seen2020-04-10
    modified2020-04-06
    plugin id135221
    published2020-04-06
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/135221
    titleopenSUSE Security Update : spamassassin (openSUSE-2020-446)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2020-446.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(135221);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/04/08");

  script_cve_id("CVE-2018-11805", "CVE-2020-1930", "CVE-2020-1931");

  script_name(english:"openSUSE Security Update : spamassassin (openSUSE-2020-446)");
  script_summary(english:"Check for the openSUSE-2020-446 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for spamassassin fixes the following issues :

Security issues fixed :

  - CVE-2018-11805: Fixed an issue with delimiter handling
    in rule files related to is_regexp_valid()
    (bsc#1118987).

  - CVE-2020-1930: Fixed an issue with rule configuration
    (.cf) files which can be configured to run system
    commands (bsc#1162197).

  - CVE-2020-1931: Fixed an issue with rule configuration
    (.cf) files which can be configured to run system
    commands with warnings (bsc#1162200). Non-security issue
    fixed :

  - Altering hash requires restarting loop (bsc#862963).

This update was imported from the SUSE:SLE-15-SP1:Update update
project."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1118987"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1162197"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1162200"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=862963"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected spamassassin 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:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:perl-Mail-SpamAssassin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:perl-Mail-SpamAssassin-Plugin-iXhash2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:spamassassin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:spamassassin-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:spamassassin-debugsource");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.1");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/12/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/04/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/06");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

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

  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/SuSE/release");
if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE");
if (release !~ "^(SUSE15\.1)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.1", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(x86_64)$") audit(AUDIT_ARCH_NOT, "x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE15.1", reference:"perl-Mail-SpamAssassin-3.4.2-lp151.8.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"perl-Mail-SpamAssassin-Plugin-iXhash2-2.05-lp151.8.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"spamassassin-3.4.2-lp151.8.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"spamassassin-debuginfo-3.4.2-lp151.8.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"spamassassin-debugsource-3.4.2-lp151.8.3.1") ) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "perl-Mail-SpamAssassin / perl-Mail-SpamAssassin-Plugin-iXhash2 / etc");
}
  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_701117591DAE11EA966A206A8A720317.NASL
    descriptionthe Apache Spamassassin project reports : An input validation error of user-supplied input parsing multipart emails. Specially crafted emails can consume all resources on the system. A local user is able to execute arbitrary shell commands through specially crafted nefarious CF files.
    last seen2020-06-01
    modified2020-06-02
    plugin id132065
    published2019-12-16
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/132065
    titleFreeBSD : spamassassin -- multiple vulnerabilities (70111759-1dae-11ea-966a-206a8a720317)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2020 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
# 
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

include("compat.inc");

if (description)
{
  script_id(132065);
  script_version("1.5");
  script_cvs_date("Date: 2020/01/13");

  script_cve_id("CVE-2018-11805", "CVE-2019-12420");

  script_name(english:"FreeBSD : spamassassin -- multiple vulnerabilities (70111759-1dae-11ea-966a-206a8a720317)");
  script_summary(english:"Checks for updated package in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote FreeBSD host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"the Apache Spamassassin project reports :

An input validation error of user-supplied input parsing multipart
emails. Specially crafted emails can consume all resources on the
system.

A local user is able to execute arbitrary shell commands through
specially crafted nefarious CF files."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.cybersecurity-help.cz/vdb/SB2019121311"
  );
  # https://vuxml.freebsd.org/freebsd/70111759-1dae-11ea-966a-206a8a720317.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?5c5ec3cc"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-11805");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:spamassassin");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/12/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/12/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/16");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (pkg_test(save_report:TRUE, pkg:"spamassassin<3.4.3")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_E3404A6E436411EAB643206A8A720317.NASL
    descriptionthe Apache Spamassassin project reports : nefarious rule configuration (.cf) files can be configured to run system commands similar to CVE-2018-11805. This issue is less stealthy and attempts to exploit the issue will throw warnings.
    last seen2020-06-01
    modified2020-06-02
    plugin id133380
    published2020-01-31
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/133380
    titleFreeBSD : spamassassin -- Apache SpamAssassin Nefarious rule configuration (.cf) files can be configured to run system commands with warnings (e3404a6e-4364-11ea-b643-206a8a720317)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2020 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
# 
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

include("compat.inc");

if (description)
{
  script_id(133380);
  script_version("1.4");
  script_cvs_date("Date: 2020/02/06");

  script_cve_id("CVE-2020-1931");
  script_xref(name:"IAVA", value:"2020-A-0056");

  script_name(english:"FreeBSD : spamassassin -- Apache SpamAssassin Nefarious rule configuration (.cf) files can be configured to run system commands with warnings (e3404a6e-4364-11ea-b643-206a8a720317)");
  script_summary(english:"Checks for updated package in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote FreeBSD host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"the Apache Spamassassin project reports :

nefarious rule configuration (.cf) files can be configured to run
system commands similar to CVE-2018-11805. This issue is less stealthy
and attempts to exploit the issue will throw warnings."
  );
  # https://svn.apache.org/repos/asf/spamassassin/branches/3.4/build/announcements/3.4.4.txt
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?888f7435"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://cve.mitre.org/cgi-bin/cvename.cgi?name=2020-1931"
  );
  # https://vuxml.freebsd.org/freebsd/e3404a6e-4364-11ea-b643-206a8a720317.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?0c86409c"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected package.");
  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:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-1931");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:spamassassin");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/01/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/01/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/01/31");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (pkg_test(save_report:TRUE, pkg:"spamassassin<3.4.4")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-4237-1.NASL
    descriptionIt was discovered that SpamAssassin incorrectly handled certain CF files. If a user or automated system were tricked into using a specially crafted CF file, a remote attacker could possibly run arbitrary code. (CVE-2018-11805) It was discovered that SpamAssassin incorrectly handled certain messages. A remote attacker could possibly use this issue to cause SpamAssassin to consume resources, resulting in a denial of service. (CVE-2019-12420). 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.
    last seen2020-06-01
    modified2020-06-02
    plugin id132932
    published2020-01-15
    reporterUbuntu Security Notice (C) 2020 Canonical, Inc. / NASL script (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/132932
    titleUbuntu 16.04 LTS / 18.04 LTS / 19.04 / 19.10 : spamassassin vulnerabilities (USN-4237-1)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4237-1. 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(132932);
  script_version("1.2");
  script_cvs_date("Date: 2020/01/17");

  script_cve_id("CVE-2018-11805", "CVE-2019-12420");
  script_xref(name:"USN", value:"4237-1");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 19.04 / 19.10 : spamassassin vulnerabilities (USN-4237-1)");
  script_summary(english:"Checks dpkg output for updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Ubuntu host is missing a security-related patch."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"It was discovered that SpamAssassin incorrectly handled certain CF
files. If a user or automated system were tricked into using a
specially crafted CF file, a remote attacker could possibly run
arbitrary code. (CVE-2018-11805)

It was discovered that SpamAssassin incorrectly handled certain
messages. A remote attacker could possibly use this issue to cause
SpamAssassin to consume resources, resulting in a denial of service.
(CVE-2019-12420).

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/4237-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected spamassassin package."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-11805");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:spamassassin");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:19.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:19.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/12/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/01/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/01/15");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2020 Canonical, Inc. / NASL script (C) 2020 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:"^(16\.04|18\.04|19\.04|19\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 16.04 / 18.04 / 19.04 / 19.10", "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:"16.04", pkgname:"spamassassin", pkgver:"3.4.2-0ubuntu0.16.04.2")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"spamassassin", pkgver:"3.4.2-0ubuntu0.18.04.2")) flag++;
if (ubuntu_check(osver:"19.04", pkgname:"spamassassin", pkgver:"3.4.2-1ubuntu0.19.04.1")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"spamassassin", pkgver:"3.4.2-1ubuntu0.19.10.1")) 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, "spamassassin");
}
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-2037.NASL
    descriptionTwo vulnerabilities were discovered in spamassassin, a Perl-based spam filter using text analysis. CVE-2018-11805 Malicious rule or configuration files, possibly downloaded from an updates server, could execute arbitrary commands under multiple scenarios. CVE-2019-12420 Specially crafted mulitpart messages can cause spamassassin to use excessive resources, resulting in a denial of service. For Debian 8
    last seen2020-06-01
    modified2020-06-02
    plugin id132081
    published2019-12-17
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/132081
    titleDebian DLA-2037-1 : spamassassin security update
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-2037-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(132081);
  script_version("1.5");
  script_cvs_date("Date: 2020/01/13");

  script_cve_id("CVE-2018-11805", "CVE-2019-12420");

  script_name(english:"Debian DLA-2037-1 : spamassassin security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Two vulnerabilities were discovered in spamassassin, a Perl-based spam
filter using text analysis.

CVE-2018-11805

Malicious rule or configuration files, possibly downloaded from an
updates server, could execute arbitrary commands under multiple
scenarios.

CVE-2019-12420

Specially crafted mulitpart messages can cause spamassassin to use
excessive resources, resulting in a denial of service.

For Debian 8 'Jessie', these problems have been fixed in version
3.4.2-0+deb8u2.

We recommend that you upgrade your spamassassin packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA 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://lists.debian.org/debian-lts-announce/2019/12/msg00019.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/jessie/spamassassin"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Upgrade the affected sa-compile, spamassassin, and spamc packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-11805");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:sa-compile");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:spamassassin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:spamc");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/12/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/12/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/17");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

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

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"8.0", prefix:"sa-compile", reference:"3.4.2-0+deb8u2")) flag++;
if (deb_check(release:"8.0", prefix:"spamassassin", reference:"3.4.2-0+deb8u2")) flag++;
if (deb_check(release:"8.0", prefix:"spamc", reference:"3.4.2-0+deb8u2")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2020-0811-1.NASL
    descriptionThis update for spamassassin fixes the following issues : Security issues fixed : CVE-2018-11805: Fixed an issue with delimiter handling in rule files related to is_regexp_valid() (bsc#1118987). CVE-2020-1930: Fixed an issue with rule configuration (.cf) files which can be configured to run system commands (bsc#1162197). CVE-2020-1931: Fixed an issue with rule configuration (.cf) files which can be configured to run system commands with warnings (bsc#1162200). Non-security issue fixed: Altering hash requires restarting loop (bsc#862963). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-04-04
    modified2020-03-31
    plugin id135024
    published2020-03-31
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/135024
    titleSUSE SLED15 / SLES15 Security Update : spamassassin (SUSE-SU-2020:0811-1)
  • NASL familyAmazon Linux Local Security Checks
    NASL idALA_ALAS-2020-1341.NASL
    descriptionIn Apache SpamAssassin before 3.4.3, a message can be crafted in a way to use excessive resources. Upgrading to SA 3.4.3 as soon as possible is the recommended fix but details will not be shared publicly. (CVE-2019-12420) In Apache SpamAssassin before 3.4.3, nefarious CF files can be configured to run system commands without any output or errors. With this, exploits can be injected in a number of scenarios. In addition to upgrading to SA 3.4.3, we recommend that users should only use update channels or 3rd party .cf files from trusted places. (CVE-2018-11805)
    last seen2020-06-01
    modified2020-06-02
    plugin id133560
    published2020-02-10
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/133560
    titleAmazon Linux AMI : spamassassin (ALAS-2020-1341)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-2062.NASL
    descriptionIt was found that sa-exim, the SpamAssassin filter for Exim, allows attackers to execute arbitrary code if users are allowed to run custom rules. A similar issue was fixed in spamassassin, CVE-2018-11805, which caused a functional regression in sa-exim. This update restores the compatibility between spamassassin and sa-exim. The security implications of sa-exim
    last seen2020-06-01
    modified2020-06-02
    plugin id132759
    published2020-01-10
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/132759
    titleDebian DLA-2062-1 : sa-exim security update
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-4584.NASL
    descriptionTwo vulnerabilities were discovered in spamassassin, a Perl-based spam filter using text analysis. - CVE-2018-11805 Malicious rule or configuration files, possibly downloaded from an updates server, could execute arbitrary commands under multiple scenarios. - CVE-2019-12420 Specially crafted mulitpart messages can cause spamassassin to use excessive resources, resulting in a denial of service.
    last seen2020-06-01
    modified2020-06-02
    plugin id132063
    published2019-12-16
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/132063
    titleDebian DSA-4584-1 : spamassassin - security update
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2020-0813-1.NASL
    descriptionThis update for spamassassin fixes the following issues : Security issues fixed : CVE-2018-11805: Fixed an issue with delimiter handling in rule files related to is_regexp_valid() (bsc#1118987). CVE-2020-1930: Fixed an issue with rule configuration (.cf) files which can be configured to run system commands (bsc#1162197). CVE-2020-1931: Fixed an issue with rule configuration (.cf) files which can be configured to run system commands with warnings (bsc#1162200). Non-security issue fixed: Altering hash requires restarting loop (bsc#862963). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-04-04
    modified2020-03-31
    plugin id135025
    published2020-03-31
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/135025
    titleSUSE SLES15 Security Update : spamassassin (SUSE-SU-2020:0813-1)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2020-0810-1.NASL
    descriptionThis update for spamassassin fixes the following issues : CVE-2018-11805: Fixed an issue with delimiter handling in rule files related to is_regexp_valid() (bsc#1118987). CVE-2020-1930: Fixed an issue with rule configuration (.cf) files which can be configured to run system commands (bsc#1162197). CVE-2020-1931: Fixed an issue with rule configuration (.cf) files which can be configured to run system commands with warnings (bsc#1162200). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-04-04
    modified2020-03-31
    plugin id135023
    published2020-03-31
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/135023
    titleSUSE SLES12 Security Update : spamassassin (SUSE-SU-2020:0810-1)

References