Linux Distros Unpatched Vulnerability : CVE-2017-7656

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

include('compat.inc');

if (description)
{
  script_id(221570);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/09/02");

  script_cve_id("CVE-2017-7656");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2017-7656");

  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.

  - In Eclipse Jetty, versions 9.2.x and older, 9.3.x (all configurations), and 9.4.x (non-default
    configuration with RFC2616 compliance enabled), HTTP/0.9 is handled poorly. An HTTP/1 style request line
    (i.e. method space URI space version) that declares a version of HTTP/0.9 was accepted and treated as a
    0.9 request. If deployed behind an intermediary that also accepted and passed through the 0.9 version (but
    did not act on it), then the response sent could be interpreted by the intermediary as HTTP/1 headers.
    This could be used to poison the cache if the server allowed the origin client to generate arbitrary
    content in the response. (CVE-2017-7656)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2017-7656");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2017-7656");
  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:N/AC:L/Au:N/C:N/I:P/A:N");
  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:N/S:U/C:N/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-7656");

  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:"2018/06/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/03/04");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
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  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:jetty8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:jetty9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-annotations");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-ant");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-client");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-http");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-io");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-jaas");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-jaspi");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-jmx");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-jndi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-jsp");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-security");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-servlet");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-servlets");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-start");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-util");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-util-ajax");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-webapp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-websocket-api");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-websocket-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-websocket-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-websocket-parent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-websocket-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-websocket-servlet");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:jetty-xml");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:jetty-annotations");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:jetty-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:jetty-continuation");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:jetty-runner");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:jetty-security");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:jetty-server");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:jetty-websocket-api");
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  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

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

  script_dependencies("set_linux_os_id.nasl", "ssh_get_info2.nasl");
  script_require_keys("Host/OS/identifier", "Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched");
  script_require_ports("Host/OS/CentOS Linux-7", "Host/OS/Red Hat Enterprise Linux-6", "Host/OS/Red Hat Enterprise Linux-7", "Host/OS/Ubuntu Linux-14.04", "Host/OS/Ubuntu Linux-16.04", "Host/OS/Ubuntu Linux-18.04");

  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/CentOS/rpm-list")) && empty_or_null(get_one_kb_item("Host/Debian/dpkg-l")) && empty_or_null(get_one_kb_item("Host/RedHat/rpm-list"))) 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": "jetty8"}
        ]
      }
    ]
  },
  "Ubuntu Linux-16.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "16.04",
        "pkgs": [
          {"reference": "jetty8"},
          {"reference": "jetty9"}
        ]
      }
    ]
  },
  "Ubuntu Linux-18.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "18.04",
        "pkgs": [
          {"reference": "jetty9"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-6": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "6",
        "pkgs": [
          {"reference": "jetty-eclipse"}
        ]
      }
    ]
  },
  "CentOS Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "jetty-annotations"},
          {"reference": "jetty-ant"},
          {"reference": "jetty-client"},
          {"reference": "jetty-continuation"},
          {"reference": "jetty-deploy"},
          {"reference": "jetty-http"},
          {"reference": "jetty-io"},
          {"reference": "jetty-jaas"},
          {"reference": "jetty-jaspi"},
          {"reference": "jetty-javadoc"},
          {"reference": "jetty-jmx"},
          {"reference": "jetty-jndi"},
          {"reference": "jetty-jsp"},
          {"reference": "jetty-jspc-maven-plugin"},
          {"reference": "jetty-maven-plugin"},
          {"reference": "jetty-monitor"},
          {"reference": "jetty-plus"},
          {"reference": "jetty-project"},
          {"reference": "jetty-proxy"},
          {"reference": "jetty-rewrite"},
          {"reference": "jetty-runner"},
          {"reference": "jetty-security"},
          {"reference": "jetty-server"},
          {"reference": "jetty-servlet"},
          {"reference": "jetty-servlets"},
          {"reference": "jetty-start"},
          {"reference": "jetty-util"},
          {"reference": "jetty-util-ajax"},
          {"reference": "jetty-webapp"},
          {"reference": "jetty-websocket-api"},
          {"reference": "jetty-websocket-client"},
          {"reference": "jetty-websocket-common"},
          {"reference": "jetty-websocket-parent"},
          {"reference": "jetty-websocket-server"},
          {"reference": "jetty-websocket-servlet"},
          {"reference": "jetty-xml"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "jetty-annotations"},
          {"reference": "jetty-ant"},
          {"reference": "jetty-client"},
          {"reference": "jetty-continuation"},
          {"reference": "jetty-deploy"},
          {"reference": "jetty-http"},
          {"reference": "jetty-io"},
          {"reference": "jetty-jaas"},
          {"reference": "jetty-jaspi"},
          {"reference": "jetty-javadoc"},
          {"reference": "jetty-jmx"},
          {"reference": "jetty-jndi"},
          {"reference": "jetty-jsp"},
          {"reference": "jetty-jspc-maven-plugin"},
          {"reference": "jetty-maven-plugin"},
          {"reference": "jetty-monitor"},
          {"reference": "jetty-plus"},
          {"reference": "jetty-project"},
          {"reference": "jetty-proxy"},
          {"reference": "jetty-rewrite"},
          {"reference": "jetty-runner"},
          {"reference": "jetty-security"},
          {"reference": "jetty-server"},
          {"reference": "jetty-servlet"},
          {"reference": "jetty-servlets"},
          {"reference": "jetty-start"},
          {"reference": "jetty-util"},
          {"reference": "jetty-util-ajax"},
          {"reference": "jetty-webapp"},
          {"reference": "jetty-websocket-api"},
          {"reference": "jetty-websocket-client"},
          {"reference": "jetty-websocket-common"},
          {"reference": "jetty-websocket-parent"},
          {"reference": "jetty-websocket-server"},
          {"reference": "jetty-websocket-servlet"},
          {"reference": "jetty-xml"}
        ]
      }
    ]
  }
};

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_WARNING,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}