Vulnerabilities > CVE-2017-16641 - OS Command Injection vulnerability in Cacti 1.1.27

047910
CVSS 9.0 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
SINGLE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
low complexity
cacti
CWE-78
critical
nessus

Summary

lib/rrd.php in Cacti 1.1.27 allows remote authenticated administrators to execute arbitrary OS commands via the path_rrdtool parameter in an action=save request to settings.php.

Vulnerable Configurations

Part Description Count
Application
Cacti
1

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-2017-1290.NASL
    descriptionThis update for cacti, cacti-spine to version 1.1.28 fixes the following issues : - CVE-2017-16641: Potential code execution vulnerability in RRDtool functions (boo#1067166) - CVE-2017-16660: Remote execution vulnerability in logging function (boo#1067164) - CVE-2017-16661: Arbitrary file read vulnerability in view log file (boo#1067163) - CVE-2017-16785: Reflection XSS vulnerability (boo#1068028) This update to version 1.1.28 also contains a number of upstream bug fixes and improvements.
    last seen2020-06-05
    modified2017-11-27
    plugin id104762
    published2017-11-27
    reporterThis script is Copyright (C) 2017-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/104762
    titleopenSUSE Security Update : cacti / cacti-spine (openSUSE-2017-1290)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from openSUSE Security Update openSUSE-2017-1290.
    #
    # The text description of this plugin is (C) SUSE LLC.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(104762);
      script_version("3.5");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");
    
      script_cve_id("CVE-2017-16641", "CVE-2017-16660", "CVE-2017-16661", "CVE-2017-16785");
    
      script_name(english:"openSUSE Security Update : cacti / cacti-spine (openSUSE-2017-1290)");
      script_summary(english:"Check for the openSUSE-2017-1290 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 cacti, cacti-spine to version 1.1.28 fixes the
    following issues :
    
      - CVE-2017-16641: Potential code execution vulnerability
        in RRDtool functions (boo#1067166)
    
      - CVE-2017-16660: Remote execution vulnerability in
        logging function (boo#1067164)
    
      - CVE-2017-16661: Arbitrary file read vulnerability in
        view log file (boo#1067163)
    
      - CVE-2017-16785: Reflection XSS vulnerability
        (boo#1068028)
    
    This update to version 1.1.28 also contains a number of upstream bug
    fixes and improvements."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1067163"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1067164"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1067166"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1068028"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected cacti / cacti-spine packages."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:cacti");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:cacti-spine");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:cacti-spine-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:cacti-spine-debugsource");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:42.2");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:42.3");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2017/11/22");
      script_set_attribute(attribute:"plugin_publication_date", value:"2017/11/27");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2017-2020 Tenable Network Security, Inc.");
      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 !~ "^(SUSE42\.2|SUSE42\.3)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "42.2 / 42.3", 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 !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);
    
    flag = 0;
    
    if ( rpm_check(release:"SUSE42.2", reference:"cacti-1.1.28-16.13.1") ) flag++;
    if ( rpm_check(release:"SUSE42.2", reference:"cacti-spine-1.1.28-7.13.1") ) flag++;
    if ( rpm_check(release:"SUSE42.2", reference:"cacti-spine-debuginfo-1.1.28-7.13.1") ) flag++;
    if ( rpm_check(release:"SUSE42.2", reference:"cacti-spine-debugsource-1.1.28-7.13.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", reference:"cacti-1.1.28-29.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", reference:"cacti-spine-1.1.28-20.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", reference:"cacti-spine-debuginfo-1.1.28-20.1") ) flag++;
    if ( rpm_check(release:"SUSE42.3", reference:"cacti-spine-debugsource-1.1.28-20.1") ) 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, "cacti-spine / cacti-spine-debuginfo / cacti-spine-debugsource / etc");
    }
    
  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_DB570002CE0611E7804EC85B763A2F96.NASL
    descriptioncacti reports : Changelog issue#1057: CVE-2017-16641 - Potential vulnerability in RRDtool functions issue#1066: CVE-2017-16660 in remote_agent.php logging function issue#1066: CVE-2017-16661 in view log file issue#1071: CVE-2017-16785 in global_session.php Reflection XSS
    last seen2020-06-01
    modified2020-06-02
    plugin id104733
    published2017-11-22
    reporterThis script is Copyright (C) 2017-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/104733
    titleFreeBSD : cacti -- multiple vulnerabilities (db570002-ce06-11e7-804e-c85b763a2f96)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from the FreeBSD VuXML database :
    #
    # Copyright 2003-2018 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(104733);
      script_version("3.5");
      script_cvs_date("Date: 2018/11/10 11:49:46");
    
      script_cve_id("CVE-2017-16641", "CVE-2017-16660", "CVE-2017-16661", "CVE-2017-16785");
    
      script_name(english:"FreeBSD : cacti -- multiple vulnerabilities (db570002-ce06-11e7-804e-c85b763a2f96)");
      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:
    "cacti reports :
    
    Changelog
    
    issue#1057: CVE-2017-16641 - Potential vulnerability in RRDtool
    functions
    
    issue#1066: CVE-2017-16660 in remote_agent.php logging function
    
    issue#1066: CVE-2017-16661 in view log file
    
    issue#1071: CVE-2017-16785 in global_session.php Reflection XSS"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://sourceforge.net/p/cacti/mailman/message/36122745/"
      );
      # https://vuxml.freebsd.org/freebsd/db570002-ce06-11e7-804e-c85b763a2f96.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?cac5c4d8"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected package.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:cacti");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2017/11/01");
      script_set_attribute(attribute:"patch_publication_date", value:"2017/11/20");
      script_set_attribute(attribute:"plugin_publication_date", value:"2017/11/22");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2017-2018 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:"cacti<1.1.28")) 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 familyFedora Local Security Checks
    NASL idFEDORA_2017-CF75844225.NASL
    description - Update to 1.1.28 - CVE-2017-16641, CVE-2017-16660, CVE-2017-16661, CVE-2017-16785 Release notes: https://www.cacti.net/release_notes.php?version=1.1.28 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-05
    modified2018-01-15
    plugin id105981
    published2018-01-15
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/105981
    titleFedora 27 : cacti (2017-cf75844225)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Fedora Security Advisory FEDORA-2017-cf75844225.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(105981);
      script_version("1.4");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");
    
      script_cve_id("CVE-2017-16641", "CVE-2017-16660", "CVE-2017-16661", "CVE-2017-16785");
      script_xref(name:"FEDORA", value:"2017-cf75844225");
    
      script_name(english:"Fedora 27 : cacti (2017-cf75844225)");
      script_summary(english:"Checks rpm output for the updated package.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Fedora host is missing a security update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "  - Update to 1.1.28
    
      - CVE-2017-16641, CVE-2017-16660, CVE-2017-16661,
        CVE-2017-16785
    
    Release notes: https://www.cacti.net/release_notes.php?version=1.1.28
    
    Note that Tenable Network Security has extracted the preceding
    description block directly from the Fedora update system website.
    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://bodhi.fedoraproject.org/updates/FEDORA-2017-cf75844225"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.cacti.net/release_notes.php?version=1.1.28"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected cacti package.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:cacti");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:27");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2017/11/07");
      script_set_attribute(attribute:"patch_publication_date", value:"2017/11/28");
      script_set_attribute(attribute:"plugin_publication_date", value:"2018/01/15");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Fedora Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "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) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
    os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
    os_ver = os_ver[1];
    if (! preg(pattern:"^27([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 27", "Fedora " + os_ver);
    
    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 ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);
    
    
    flag = 0;
    if (rpm_check(release:"FC27", reference:"cacti-1.1.28-1.fc27")) flag++;
    
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_HOLE,
        extra      : rpm_report_get()
      );
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "cacti");
    }
    
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2017-9762A831B2.NASL
    description - Update to 1.1.28 - CVE-2017-16641, CVE-2017-16660, CVE-2017-16661, CVE-2017-16785 Release notes: https://www.cacti.net/release_notes.php?version=1.1.28 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-05
    modified2017-11-28
    plugin id104796
    published2017-11-28
    reporterThis script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/104796
    titleFedora 26 : cacti (2017-9762a831b2)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2017-D008ECF87A.NASL
    description - Update to 1.1.28 - CVE-2017-16641, CVE-2017-16660, CVE-2017-16661, CVE-2017-16785 Release notes: https://www.cacti.net/release_notes.php?version=1.1.28 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-05
    modified2017-11-29
    plugin id104829
    published2017-11-29
    reporterThis script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/104829
    titleFedora 25 : cacti (2017-d008ecf87a)