Linux Distros Unpatched Vulnerability : CVE-2017-11671

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(261303);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/21");

  script_cve_id("CVE-2017-11671");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2017-11671");

  script_set_attribute(attribute:"synopsis", value:
"The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be
patched.");
  script_set_attribute(attribute:"description", value:
"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
patch available.

  - Under certain circumstances, the ix86_expand_builtin function in i386.c in GNU Compiler Collection (GCC)
    version 4.6, 4.7, 4.8, 4.9, 5 before 5.5, and 6 before 6.4 will generate instruction sequences that
    clobber the status flag of the RDRAND and RDSEED intrinsics before it can be read, potentially causing
    failures of these instructions to go unreported. This could potentially lead to less randomness in random
    number generation. (CVE-2017-11671)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2017-11671");
  script_set_attribute(attribute:"solution", value:
"There is no known solution at this time.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:U/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:U/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-11671");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"vendor_unpatched", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/07/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/09/04");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  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:20.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:24.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:25.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:25.10");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-3.3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-4.7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-4.7-armel-cross");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-4.7-armhf-cross");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-4.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-4.8-arm64-cross");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-4.8-armhf-cross");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-4.8-powerpc-cross");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-4.8-ppc64el-cross");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-4.9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-5-cross");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-arm-linux-androideabi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-arm-none-eabi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-avr");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-h8300-hms");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-i686-linux-android");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-m68hc1x");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-mingw-w64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-msp430");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gcc-snapshot");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gccgo-4.9");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2025-2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl", "set_linux_os_id.nasl");
  script_require_keys("Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched", "Host/OS/identifier");
  script_require_ports("Host/OS/Ubuntu Linux-14.04", "Host/OS/Ubuntu Linux-16.04", "Host/OS/Ubuntu Linux-18.04", "Host/OS/Ubuntu Linux-20.04", "Host/OS/Ubuntu Linux-22.04", "Host/OS/Ubuntu Linux-24.04", "Host/OS/Ubuntu Linux-25.04", "Host/OS/Ubuntu Linux-25.10");

  exit(0);
}

if (!get_kb_item("global_settings/vendor_unpatched")) exit(0, "Unpatched Vulnerabilities Detection not active.");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (empty_or_null(get_one_kb_item("Host/Debian/dpkg-l"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "Ubuntu Linux-14.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14.04",
        "pkgs": [
          {"reference": "cpp-4.7"},
          {"reference": "cpp-4.7-doc"},
          {"reference": "cpp-4.8"},
          {"reference": "cpp-4.8-doc"},
          {"reference": "g++-4.7"},
          {"reference": "g++-4.7-multilib"},
          {"reference": "g++-4.7-spu"},
          {"reference": "g++-4.8"},
          {"reference": "g++-4.8-multilib"},
          {"reference": "gcc-3.3"},
          {"reference": "gcc-4.7"},
          {"reference": "gcc-4.7-base"},
          {"reference": "gcc-4.7-hppa64"},
          {"reference": "gcc-4.7-locales"},
          {"reference": "gcc-4.7-multilib"},
          {"reference": "gcc-4.7-plugin-dev"},
          {"reference": "gcc-4.7-spu"},
          {"reference": "gcc-4.8"},
          {"reference": "gcc-4.8-base"},
          {"reference": "gcc-4.8-hppa64"},
          {"reference": "gcc-4.8-locales"},
          {"reference": "gcc-4.8-multilib"},
          {"reference": "gcc-4.8-plugin-dev"},
          {"reference": "gcc-4.9-base"},
          {"reference": "gcc-4.9-soft-float"},
          {"reference": "gcc-mingw-w64"},
          {"reference": "gccgo-4.7"},
          {"reference": "gccgo-4.7-doc"},
          {"reference": "gccgo-4.7-multilib"},
          {"reference": "gccgo-4.9"},
          {"reference": "gccgo-4.9-doc"},
          {"reference": "gccgo-4.9-multilib"},
          {"reference": "gfortran-4.7"},
          {"reference": "gfortran-4.7-doc"},
          {"reference": "gfortran-4.7-multilib"},
          {"reference": "gfortran-4.7-spu"},
          {"reference": "gobjc++-4.7"},
          {"reference": "gobjc++-4.7-multilib"},
          {"reference": "gobjc-4.7"},
          {"reference": "gobjc-4.7-multilib"},
          {"reference": "lib32asan0"},
          {"reference": "lib32asan0-dbg"},
          {"reference": "lib32atomic1"},
          {"reference": "lib32atomic1-dbg"},
          {"reference": "lib32gcc-4.7-dev"},
          {"reference": "lib32gcc-4.8-dev"},
          {"reference": "lib32gcc1"},
          {"reference": "lib32gcc1-dbg"},
          {"reference": "lib32gfortran-4.7-dev"},
          {"reference": "lib32go0"},
          {"reference": "lib32go0-dbg"},
          {"reference": "lib32go5"},
          {"reference": "lib32go5-dbg"},
          {"reference": "lib32gomp1"},
          {"reference": "lib32gomp1-dbg"},
          {"reference": "lib32itm1"},
          {"reference": "lib32itm1-dbg"},
          {"reference": "lib32objc-4.7-dev"},
          {"reference": "lib32stdc++6-4.7-dev"},
          {"reference": "lib64asan0"},
          {"reference": "lib64asan0-dbg"},
          {"reference": "lib64atomic1"},
          {"reference": "lib64atomic1-dbg"},
          {"reference": "lib64gcc-4.7-dev"},
          {"reference": "lib64gcc-4.8-dev"},
          {"reference": "lib64gcc1"},
          {"reference": "lib64gcc1-dbg"},
          {"reference": "lib64gfortran-4.7-dev"},
          {"reference": "lib64go0"},
          {"reference": "lib64go0-dbg"},
          {"reference": "lib64go5"},
          {"reference": "lib64go5-dbg"},
          {"reference": "lib64gomp1"},
          {"reference": "lib64gomp1-dbg"},
          {"reference": "lib64itm1"},
          {"reference": "lib64itm1-dbg"},
          {"reference": "lib64objc-4.7-dev"},
          {"reference": "libasan0"},
          {"reference": "libasan0-dbg"},
          {"reference": "libatomic1"},
          {"reference": "libatomic1-dbg"},
          {"reference": "libgcc-4.7-dev"},
          {"reference": "libgcc-4.8-dev"},
          {"reference": "libgcc1"},
          {"reference": "libgcc1-dbg"},
          {"reference": "libgcc2"},
          {"reference": "libgcc2-dbg"},
          {"reference": "libgcc4"},
          {"reference": "libgcc4-dbg"},
          {"reference": "libgfortran-4.7-dev"},
          {"reference": "libgo0"},
          {"reference": "libgo0-dbg"},
          {"reference": "libgo5"},
          {"reference": "libgo5-dbg"},
          {"reference": "libgomp1"},
          {"reference": "libgomp1-dbg"},
          {"reference": "libhfatomic1"},
          {"reference": "libhfatomic1-dbg"},
          {"reference": "libhfgcc-4.7-dev"},
          {"reference": "libhfgcc-4.8-dev"},
          {"reference": "libhfgcc1"},
          {"reference": "libhfgcc1-dbg"},
          {"reference": "libhfgfortran-4.7-dev"},
          {"reference": "libhfgomp1"},
          {"reference": "libhfgomp1-dbg"},
          {"reference": "libhfitm1"},
          {"reference": "libhfitm1-dbg"},
          {"reference": "libhfobjc-4.7-dev"},
          {"reference": "libitm1"},
          {"reference": "libitm1-dbg"},
          {"reference": "libn32asan0"},
          {"reference": "libn32asan0-dbg"},
          {"reference": "libn32atomic1"},
          {"reference": "libn32atomic1-dbg"},
          {"reference": "libn32gcc-4.7-dev"},
          {"reference": "libn32gcc-4.8-dev"},
          {"reference": "libn32gcc1"},
          {"reference": "libn32gcc1-dbg"},
          {"reference": "libn32gfortran-4.7-dev"},
          {"reference": "libn32go0"},
          {"reference": "libn32go0-dbg"},
          {"reference": "libn32go5"},
          {"reference": "libn32go5-dbg"},
          {"reference": "libn32gomp1"},
          {"reference": "libn32gomp1-dbg"},
          {"reference": "libn32itm1"},
          {"reference": "libn32itm1-dbg"},
          {"reference": "libn32objc-4.7-dev"},
          {"reference": "libobjc-4.7-dev"},
          {"reference": "libsfatomic1"},
          {"reference": "libsfatomic1-dbg"},
          {"reference": "libsfgcc-4.7-dev"},
          {"reference": "libsfgcc-4.8-dev"},
          {"reference": "libsfgcc1"},
          {"reference": "libsfgcc1-dbg"},
          {"reference": "libsfgfortran-4.7-dev"},
          {"reference": "libsfgomp1"},
          {"reference": "libsfgomp1-dbg"},
          {"reference": "libsfitm1"},
          {"reference": "libsfitm1-dbg"},
          {"reference": "libsfobjc-4.7-dev"},
          {"reference": "libstdc++6-4.7-dbg"},
          {"reference": "libstdc++6-4.7-dev"},
          {"reference": "libstdc++6-4.7-pic"},
          {"reference": "libx32atomic1"},
          {"reference": "libx32atomic1-dbg"},
          {"reference": "libx32gcc-4.7-dev"},
          {"reference": "libx32gcc-4.8-dev"},
          {"reference": "libx32gcc1"},
          {"reference": "libx32gcc1-dbg"},
          {"reference": "libx32gfortran-4.7-dev"},
          {"reference": "libx32go0"},
          {"reference": "libx32go0-dbg"},
          {"reference": "libx32go5"},
          {"reference": "libx32go5-dbg"},
          {"reference": "libx32gomp1"},
          {"reference": "libx32gomp1-dbg"},
          {"reference": "libx32itm1"},
          {"reference": "libx32itm1-dbg"},
          {"reference": "libx32objc-4.7-dev"}
        ]
      }
    ]
  },
  "Ubuntu Linux-16.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "16.04",
        "pkgs": [
          {"reference": "cpp-5-s390x-linux-gnu"},
          {"reference": "g++-5-multilib-s390x-linux-gnu"},
          {"reference": "g++-5-s390x-linux-gnu"},
          {"reference": "gcc-3.3"},
          {"reference": "gcc-4.7"},
          {"reference": "gcc-4.7-armel-cross"},
          {"reference": "gcc-4.7-armhf-cross"},
          {"reference": "gcc-4.8"},
          {"reference": "gcc-4.8-arm64-cross"},
          {"reference": "gcc-4.8-armhf-cross"},
          {"reference": "gcc-4.8-powerpc-cross"},
          {"reference": "gcc-4.8-ppc64el-cross"},
          {"reference": "gcc-4.9"},
          {"reference": "gcc-5-cross-base"},
          {"reference": "gcc-5-multilib-s390x-linux-gnu"},
          {"reference": "gcc-5-s390x-linux-gnu"},
          {"reference": "gcc-5-s390x-linux-gnu-base"},
          {"reference": "gcc-arm-linux-androideabi"},
          {"reference": "gcc-arm-none-eabi"},
          {"reference": "gcc-avr"},
          {"reference": "gcc-h8300-hms"},
          {"reference": "gcc-i686-linux-android"},
          {"reference": "gcc-m68hc1x"},
          {"reference": "gcc-mingw-w64"},
          {"reference": "gcc-msp430"},
          {"reference": "gcc-snapshot"},
          {"reference": "lib32gcc-5-dev-s390x-cross"},
          {"reference": "lib32gcc1-dbg-s390x-cross"},
          {"reference": "lib32gcc1-s390x-cross"},
          {"reference": "lib32gomp1-dbg-s390x-cross"},
          {"reference": "lib32gomp1-s390x-cross"},
          {"reference": "lib32itm1-dbg-s390x-cross"},
          {"reference": "lib32itm1-s390x-cross"},
          {"reference": "lib64gcc1-dbg-s390x-cross"},
          {"reference": "lib64gomp1-dbg-s390x-cross"},
          {"reference": "lib64itm1-dbg-s390x-cross"},
          {"reference": "libgcc-5-dev-s390x-cross"},
          {"reference": "libgcc1-dbg-s390x-cross"},
          {"reference": "libgcc1-s390x-cross"},
          {"reference": "libgcc2-dbg-s390x-cross"},
          {"reference": "libgcc4-dbg-s390x-cross"},
          {"reference": "libgomp1-dbg-s390x-cross"},
          {"reference": "libgomp1-s390x-cross"},
          {"reference": "libhfgcc1-dbg-s390x-cross"},
          {"reference": "libhfgomp1-dbg-s390x-cross"},
          {"reference": "libhfitm1-dbg-s390x-cross"},
          {"reference": "libitm1-dbg-s390x-cross"},
          {"reference": "libitm1-s390x-cross"},
          {"reference": "libn32gcc1-dbg-s390x-cross"},
          {"reference": "libn32gomp1-dbg-s390x-cross"},
          {"reference": "libn32itm1-dbg-s390x-cross"},
          {"reference": "libsfgcc1-dbg-s390x-cross"},
          {"reference": "libsfgomp1-dbg-s390x-cross"},
          {"reference": "libx32gcc1-dbg-s390x-cross"},
          {"reference": "libx32gomp1-dbg-s390x-cross"},
          {"reference": "libx32itm1-dbg-s390x-cross"}
        ]
      }
    ]
  },
  "Ubuntu Linux-18.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "18.04",
        "pkgs": [
          {"reference": "gcc-3.3"},
          {"reference": "gcc-4.8"},
          {"reference": "gcc-arm-none-eabi"},
          {"reference": "gcc-avr"},
          {"reference": "gcc-h8300-hms"},
          {"reference": "gcc-m68hc1x"},
          {"reference": "gcc-mingw-w64"},
          {"reference": "gcc-msp430"}
        ]
      }
    ]
  },
  "Ubuntu Linux-20.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "20.04",
        "pkgs": [
          {"reference": "gcc-3.3"},
          {"reference": "gcc-arm-none-eabi"},
          {"reference": "gcc-avr"},
          {"reference": "gcc-h8300-hms"},
          {"reference": "gcc-m68hc1x"},
          {"reference": "gcc-mingw-w64"},
          {"reference": "gcc-msp430"}
        ]
      }
    ]
  },
  "Ubuntu Linux-22.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "22.04",
        "pkgs": [
          {"reference": "gcc-3.3"},
          {"reference": "gcc-arm-none-eabi"},
          {"reference": "gcc-avr"},
          {"reference": "gcc-h8300-hms"},
          {"reference": "gcc-m68hc1x"},
          {"reference": "gcc-mingw-w64"},
          {"reference": "gcc-msp430"}
        ]
      }
    ]
  },
  "Ubuntu Linux-24.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "24.04",
        "pkgs": [
          {"reference": "gcc-3.3"},
          {"reference": "gcc-arm-none-eabi"},
          {"reference": "gcc-avr"},
          {"reference": "gcc-h8300-hms"},
          {"reference": "gcc-mingw-w64"}
        ]
      }
    ]
  },
  "Ubuntu Linux-25.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "25.04",
        "pkgs": [
          {"reference": "gcc-arm-none-eabi"},
          {"reference": "gcc-avr"},
          {"reference": "gcc-h8300-hms"},
          {"reference": "gcc-mingw-w64"}
        ]
      }
    ]
  },
  "Ubuntu Linux-25.10": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "25.10",
        "pkgs": [
          {"reference": "gcc-arm-none-eabi"},
          {"reference": "gcc-avr"},
          {"reference": "gcc-h8300-hms"},
          {"reference": "gcc-mingw-w64"}
        ]
      }
    ]
  }
};

var distro_constraints_values = linux_unpatched::get_distro_constraints(distro_constraints_arr:distro_constraints_array);
if (empty_or_null(distro_constraints_values)) audit(AUDIT_HOST_NOT, 'affected');
var report = linux_unpatched::check_unpatched_constraints(distro_constraints_values:distro_constraints_values);

if (!empty_or_null(report))
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_NOTE,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}