Vulnerabilities > CVE-2017-14731 - Out-of-bounds Read vulnerability in Libofx Project Libofx 0.9.12

047910
CVSS 4.3 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
PARTIAL
network
libofx-project
CWE-125
nessus

Summary

ofx_proc_file in ofx_preproc.cpp in LibOFX 0.9.12 allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via a crafted file, as demonstrated by an ofxdump call.

Vulnerable Configurations

Part Description Count
Application
Libofx_Project
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Overread Buffers
    An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.

Nessus

  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2018-2064-1.NASL
    descriptionThis update for libofx fixes the following issues: Security issues fixed : - CVE-2017-2816: Fix an exploitable buffer overflow vulnerability in the tag parsing functionality (bsc#1058673). - CVE-2017-2920: Fix a buffer overflow vulnerability in sanitize_proprietary_tags in lib/ofx_preproc.cpp (bsc#1061964). - CVE-2017-14731: Fix remote denial of service via a crafted file in ofx_proc_file in ofx_preproc.cpp (bsc#1060437). 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 seen2020-06-01
    modified2020-06-02
    plugin id111368
    published2018-07-27
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/111368
    titleSUSE SLED12 Security Update : libofx (SUSE-SU-2018:2064-1)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from SUSE update advisory SUSE-SU-2018:2064-1.
    # The text itself is copyright (C) SUSE.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(111368);
      script_version("1.4");
      script_cvs_date("Date: 2019/09/10 13:51:48");
    
      script_cve_id("CVE-2017-14731", "CVE-2017-2816", "CVE-2017-2920");
    
      script_name(english:"SUSE SLED12 Security Update : libofx (SUSE-SU-2018:2064-1)");
      script_summary(english:"Checks rpm output for the updated packages.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote SUSE host is missing one or more security updates."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "This update for libofx fixes the following issues: Security issues
    fixed :
    
      - CVE-2017-2816: Fix an exploitable buffer overflow
        vulnerability in the tag parsing functionality
        (bsc#1058673).
    
      - CVE-2017-2920: Fix a buffer overflow vulnerability in
        sanitize_proprietary_tags in lib/ofx_preproc.cpp
        (bsc#1061964).
    
      - CVE-2017-14731: Fix remote denial of service via a
        crafted file in ofx_proc_file in ofx_preproc.cpp
        (bsc#1060437).
    
    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."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1058673"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1060437"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=1061964"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2017-14731/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2017-2816/"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2017-2920/"
      );
      # https://www.suse.com/support/update/announcement/2018/suse-su-20182064-1/
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?302a626d"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "To install this SUSE Security Update use the SUSE recommended
    installation methods like YaST online_update or 'zypper patch'.
    
    Alternatively you can run the command listed for your product :
    
    SUSE Linux Enterprise Workstation Extension 12-SP3:zypper in -t patch
    SUSE-SLE-WE-12-SP3-2018-1408=1
    
    SUSE Linux Enterprise Software Development Kit 12-SP3:zypper in -t
    patch SUSE-SLE-SDK-12-SP3-2018-1408=1
    
    SUSE Linux Enterprise Desktop 12-SP3:zypper in -t patch
    SUSE-SLE-DESKTOP-12-SP3-2018-1408=1"
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
      script_set_cvss_temporal_vector("CVSS2#E:POC/RL:U/RC:ND");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:U/RC:X");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libofx");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libofx-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libofx-debugsource");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libofx6");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libofx6-debuginfo");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2017/09/13");
      script_set_attribute(attribute:"patch_publication_date", value:"2018/07/26");
      script_set_attribute(attribute:"plugin_publication_date", value:"2018/07/27");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2018-2019 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/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
    if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
    os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
    os_ver = os_ver[1];
    if (! preg(pattern:"^(SLED12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED12", "SUSE " + os_ver);
    
    if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);
    if (cpu >!< "x86_64") audit(AUDIT_ARCH_NOT, "x86_64", cpu);
    
    
    sp = get_kb_item("Host/SuSE/patchlevel");
    if (isnull(sp)) sp = "0";
    if (os_ver == "SLED12" && (! preg(pattern:"^(3)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP3", os_ver + " SP" + sp);
    
    
    flag = 0;
    if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"libofx-0.9.9-3.7.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"libofx-debuginfo-0.9.9-3.7.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"libofx-debugsource-0.9.9-3.7.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"libofx6-0.9.9-3.7.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"libofx6-debuginfo-0.9.9-3.7.1")) flag++;
    
    
    if (flag)
    {
      if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
      else security_warning(0);
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libofx");
    }
    
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201908-26.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201908-26 (libofx: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in libofx. Please review the CVE identifiers referenced below for details. Impact : A remote attacker could entice a user to process a specially crafted file using an application linked against libofx, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id128441
    published2019-09-03
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/128441
    titleGLSA-201908-26 : libofx: Multiple vulnerabilities
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from Gentoo Linux Security Advisory GLSA 201908-26.
    #
    # The advisory text is Copyright (C) 2001-2019 Gentoo Foundation, Inc.
    # and licensed under the Creative Commons - Attribution / Share Alike 
    # license. See http://creativecommons.org/licenses/by-sa/3.0/
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(128441);
      script_version("1.2");
      script_cvs_date("Date: 2019/12/31");
    
      script_cve_id("CVE-2017-14731", "CVE-2017-2816", "CVE-2017-2920");
      script_xref(name:"GLSA", value:"201908-26");
    
      script_name(english:"GLSA-201908-26 : libofx: Multiple vulnerabilities");
      script_summary(english:"Checks for updated package(s) in /var/db/pkg");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:
    "The remote Gentoo host is missing one or more security-related
    patches."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "The remote host is affected by the vulnerability described in GLSA-201908-26
    (libofx: Multiple vulnerabilities)
    
        Multiple vulnerabilities have been discovered in libofx. Please review
          the CVE identifiers referenced below for details.
      
    Impact :
    
        A remote attacker could entice a user to process a specially crafted
          file using an application linked against libofx, possibly resulting in
          execution of arbitrary code with the privileges of the process or a
          Denial of Service condition.
      
    Workaround :
    
        There is no known workaround at this time."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://security.gentoo.org/glsa/201908-26"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "All libofx users should upgrade to the latest version:
          # emerge --sync
          # emerge --ask --oneshot --verbose '>=dev-libs/libofx-0.9.14'"
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
      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:N/UI:R/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-2017-2920");
      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:gentoo:linux:libofx");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2017/09/13");
      script_set_attribute(attribute:"patch_publication_date", value:"2019/08/31");
      script_set_attribute(attribute:"plugin_publication_date", value:"2019/09/03");
      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 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Gentoo Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("global_settings.inc");
    include("qpkg.inc");
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
    if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    
    flag = 0;
    
    if (qpkg_check(package:"dev-libs/libofx", unaffected:make_list("ge 0.9.14"), vulnerable:make_list("lt 0.9.14"))) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_warning(port:0, extra:qpkg_report_get());
      else security_warning(0);
      exit(0);
    }
    else
    {
      tested = qpkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libofx");
    }
    
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2018-8A208FBA70.NASL
    descriptionThis update fixes assorted CVEs in LibOFX. 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
    modified2019-01-03
    plugin id120591
    published2019-01-03
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/120591
    titleFedora 28 : libofx (2018-8a208fba70)
    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-2018-8a208fba70.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(120591);
      script_version("1.4");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");
    
      script_cve_id("CVE-2017-14731");
      script_xref(name:"FEDORA", value:"2018-8a208fba70");
    
      script_name(english:"Fedora 28 : libofx (2018-8a208fba70)");
      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:
    "This update fixes assorted CVEs in LibOFX.
    
    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-2018-8a208fba70"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected libofx package."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P");
      script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/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:fedoraproject:fedora:libofx");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:28");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2017/09/25");
      script_set_attribute(attribute:"patch_publication_date", value:"2018/04/07");
      script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/03");
      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:"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:"^28([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 28", "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:"FC28", reference:"libofx-0.9.10-6.fc28")) flag++;
    
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_WARNING,
        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, "libofx");
    }
    
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-1192.NASL
    descriptionCVE-2017-2816 An exploitable buffer overflow vulnerability exists in the tag parsing functionality of LibOFX 0.9.11. A specially crafted OFX file can cause a write out of bounds resulting in a buffer overflow on the stack. An attacker can construct a malicious OFX file to trigger this vulnerability. CVE-2017-14731 ofx_proc_file in ofx_preproc.cpp allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via a crafted file For Debian 7
    last seen2020-03-17
    modified2017-11-27
    plugin id104751
    published2017-11-27
    reporterThis script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/104751
    titleDebian DLA-1192-1 : libofx security update
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2018-1B3A73B45F.NASL
    descriptionThis updates LibOFX to fix assorted CVEs. 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
    modified2018-04-12
    plugin id109004
    published2018-04-12
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/109004
    titleFedora 27 : libofx (2018-1b3a73b45f)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2018-4A2B875D6B.NASL
    descriptionThis updates LibOFX to fix assorted CVEs. 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
    modified2018-04-12
    plugin id109005
    published2018-04-12
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/109005
    titleFedora 26 : libofx (2018-4a2b875d6b)