RHEL 7 : ruby (RHSA-2019:2806)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2019:2806. The text 
# itself is copyright (C) Red Hat, Inc.
#

include('compat.inc');

if (description)
{
  script_id(129040);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/24");

  script_cve_id("CVE-2017-17405");
  script_xref(name:"RHSA", value:"2019:2806");

  script_name(english:"RHEL 7 : ruby (RHSA-2019:2806)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"An update for ruby is now available for Red Hat Enterprise Linux 7.3
Advanced Update Support, Red Hat Enterprise Linux 7.3 Telco Extended
Update Support, and Red Hat Enterprise Linux 7.3 Update Services for
SAP Solutions.

Red Hat Product Security has rated this update as having a security
impact of Important. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.

Ruby is an extensible, interpreted, object-oriented, scripting
language. It has features to process text files and to perform system
management tasks.

Security Fix(es) :

* ruby: Command injection vulnerability in Net::FTP (CVE-2017-17405)

For more details about the security issue(s), including the impact, a
CVSS score, acknowledgments, and other related information, refer to
the CVE page(s) listed in the References section.");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2019:2806");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2017-17405");
  script_set_attribute(attribute:"solution", value:
"Update the affected 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:POC/RL:OF/RC:C");
  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:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-17405");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/12/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/09/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/09/19");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-irb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-tcltk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygem-bigdecimal");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygem-io-console");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygem-json");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygem-minitest");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygem-psych");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygem-rake");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygem-rdoc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygems");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygems-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.3");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Red Hat Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("misc_func.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) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^7\.3([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 7.3", "Red Hat " + 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$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2019:2806";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : yum_report 
    );
    exit(0);
  }
  else
  {
    audit_message = "affected by Red Hat security advisory " + rhsa;
    audit(AUDIT_OS_NOT, audit_message);
  }
}
else
{
  flag = 0;
  if (rpm_check(release:"RHEL7", sp:"3", cpu:"x86_64", reference:"ruby-2.0.0.648-30.el7_3")) flag++;
  if (rpm_check(release:"RHEL7", sp:"3", cpu:"i686", reference:"ruby-debuginfo-2.0.0.648-30.el7_3")) flag++;
  if (rpm_check(release:"RHEL7", sp:"3", cpu:"x86_64", reference:"ruby-debuginfo-2.0.0.648-30.el7_3")) flag++;
  if (rpm_check(release:"RHEL7", sp:"3", cpu:"x86_64", reference:"ruby-devel-2.0.0.648-30.el7_3")) flag++;
  if (rpm_check(release:"RHEL7", sp:"3", reference:"ruby-doc-2.0.0.648-30.el7_3")) flag++;
  if (rpm_check(release:"RHEL7", sp:"3", reference:"ruby-irb-2.0.0.648-30.el7_3")) flag++;
  if (rpm_check(release:"RHEL7", sp:"3", cpu:"i686", reference:"ruby-libs-2.0.0.648-30.el7_3")) flag++;
  if (rpm_check(release:"RHEL7", sp:"3", cpu:"x86_64", reference:"ruby-libs-2.0.0.648-30.el7_3")) flag++;
  if (rpm_check(release:"RHEL7", sp:"3", cpu:"x86_64", reference:"ruby-tcltk-2.0.0.648-30.el7_3")) flag++;
  if (rpm_check(release:"RHEL7", sp:"3", cpu:"x86_64", reference:"rubygem-bigdecimal-1.2.0-30.el7_3")) flag++;
  if (rpm_check(release:"RHEL7", sp:"3", cpu:"x86_64", reference:"rubygem-io-console-0.4.2-30.el7_3")) flag++;
  if (rpm_exists(rpm:"rubygem-json-1.7", release:"RHEL7") && rpm_check(release:"RHEL7", sp:"3", cpu:"x86_64", reference:"rubygem-json-1.7.7-30.el7_3")) flag++;
  if (rpm_check(release:"RHEL7", sp:"3", reference:"rubygem-minitest-4.3.2-30.el7_3")) flag++;
  if (rpm_check(release:"RHEL7", sp:"3", cpu:"x86_64", reference:"rubygem-psych-2.0.0-30.el7_3")) flag++;
  if (rpm_check(release:"RHEL7", sp:"3", reference:"rubygem-rake-0.9.6-30.el7_3")) flag++;
  if (rpm_check(release:"RHEL7", sp:"3", reference:"rubygem-rdoc-4.0.0-30.el7_3")) flag++;
  if (rpm_check(release:"RHEL7", sp:"3", reference:"rubygems-2.0.14.1-30.el7_3")) flag++;
  if (rpm_check(release:"RHEL7", sp:"3", reference:"rubygems-devel-2.0.14.1-30.el7_3")) flag++;

  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get() + redhat_report_package_caveat()
    );
    exit(0);
  }
  else
  {
    tested = pkg_tests_get();
    if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
    else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ruby / ruby-debuginfo / ruby-devel / ruby-doc / ruby-irb / etc");
  }
}