RHEL 2.1 / 3 / 4 : ruby (RHSA-2006:0604)

2006-07-28T00:00:00
ID REDHAT-RHSA-2006-0604.NASL
Type nessus
Reporter Tenable
Modified 2018-11-16T00:00:00

Description

Updated ruby packages that fix security issues are now available.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

Ruby is an interpreted scripting language for object-oriented programming.

A number of flaws were found in the safe-level restrictions in Ruby. It was possible for an attacker to create a carefully crafted malicious script that can allow the bypass of certain safe-level restrictions. (CVE-2006-3694)

Users of Ruby should update to these erratum packages, which contain a backported patch and are not vulnerable to this issue.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2006:0604. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(22113);
  script_version ("1.20");
  script_cvs_date("Date: 2018/11/16 15:19:25");

  script_cve_id("CVE-2006-3694");
  script_bugtraq_id(18944);
  script_xref(name:"RHSA", value:"2006:0604");

  script_name(english:"RHEL 2.1 / 3 / 4 : ruby (RHSA-2006:0604)");
  script_summary(english:"Checks the rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Red Hat host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated ruby packages that fix security issues are now available.

This update has been rated as having moderate security impact by the
Red Hat Security Response Team.

Ruby is an interpreted scripting language for object-oriented
programming.

A number of flaws were found in the safe-level restrictions in Ruby.
It was possible for an attacker to create a carefully crafted
malicious script that can allow the bypass of certain safe-level
restrictions. (CVE-2006-3694)

Users of Ruby should update to these erratum packages, which contain a
backported patch and are not vulnerable to this issue."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2006-3694"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2006:0604"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:irb");
  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-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-docs");
  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-mode");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-tcltk");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:2.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:4");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/07/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/07/28");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Red Hat Local Security Checks");

  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 = eregmatch(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 (! ereg(pattern:"^(2\.1|3|4)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 2.1 / 3.x / 4.x", "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-2006:0604";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      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:"RHEL2.1", cpu:"i386", reference:"irb-1.6.4-2.AS21.3")) flag++;
  if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"ruby-1.6.4-2.AS21.3")) flag++;
  if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"ruby-devel-1.6.4-2.AS21.3")) flag++;
  if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"ruby-docs-1.6.4-2.AS21.3")) flag++;
  if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"ruby-libs-1.6.4-2.AS21.3")) flag++;
  if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"ruby-tcltk-1.6.4-2.AS21.3")) flag++;

  if (rpm_check(release:"RHEL3", reference:"irb-1.6.8-9.EL3.6")) flag++;
  if (rpm_check(release:"RHEL3", reference:"ruby-1.6.8-9.EL3.6")) flag++;
  if (rpm_check(release:"RHEL3", reference:"ruby-devel-1.6.8-9.EL3.6")) flag++;
  if (rpm_check(release:"RHEL3", reference:"ruby-docs-1.6.8-9.EL3.6")) flag++;
  if (rpm_check(release:"RHEL3", reference:"ruby-libs-1.6.8-9.EL3.6")) flag++;
  if (rpm_check(release:"RHEL3", reference:"ruby-mode-1.6.8-9.EL3.6")) flag++;
  if (rpm_check(release:"RHEL3", reference:"ruby-tcltk-1.6.8-9.EL3.6")) flag++;

  if (rpm_check(release:"RHEL4", reference:"irb-1.8.1-7.EL4.6")) flag++;
  if (rpm_check(release:"RHEL4", reference:"ruby-1.8.1-7.EL4.6")) flag++;
  if (rpm_check(release:"RHEL4", reference:"ruby-devel-1.8.1-7.EL4.6")) flag++;
  if (rpm_check(release:"RHEL4", reference:"ruby-docs-1.8.1-7.EL4.6")) flag++;
  if (rpm_check(release:"RHEL4", reference:"ruby-libs-1.8.1-7.EL4.6")) flag++;
  if (rpm_check(release:"RHEL4", reference:"ruby-mode-1.8.1-7.EL4.6")) flag++;
  if (rpm_check(release:"RHEL4", reference:"ruby-tcltk-1.8.1-7.EL4.6")) flag++;

  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      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, "irb / ruby / ruby-devel / ruby-docs / ruby-libs / ruby-mode / etc");
  }
}