RHEL 2.1 / 3 / 4 : samba (RHSA-2006:0591)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2006:0591. The text 
# itself is copyright (C) Red Hat, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(22112);
  script_version("1.26");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2006-3403");
  script_bugtraq_id(18927);
  script_xref(name:"RHSA", value:"2006:0591");

  script_name(english:"RHEL 2.1 / 3 / 4 : samba (RHSA-2006:0591)");
  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 samba packages that fix a denial of service vulnerability are
now available.

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

Samba provides file and printer sharing services to SMB/CIFS clients.

A denial of service bug was found in the way the smbd daemon tracks
active connections to shares. It was possible for a remote attacker to
cause the smbd daemon to consume a large amount of system memory by
sending carefully crafted smb requests. (CVE-2006-3403)

Users of Samba are advised to upgrade to these packages, which contain
a backported patch to correct this issue."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2006-3403"
  );
  # http://www.samba.org/samba/security/CAN-2006-3403.html
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.samba.org/samba/security/CVE-2006-3403.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2006:0591"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  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:samba");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:samba-swat");
  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:"vuln_publication_date", value:"2006/07/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2006/07/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/07/28");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2021 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 = 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:"^(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-2006:0591";
  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:"samba-2.2.12-1.21as.5")) flag++;
  if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"samba-client-2.2.12-1.21as.5")) flag++;
  if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"samba-common-2.2.12-1.21as.5")) flag++;
  if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"samba-swat-2.2.12-1.21as.5")) flag++;

  if (rpm_check(release:"RHEL3", reference:"samba-3.0.9-1.3E.10")) flag++;
  if (rpm_check(release:"RHEL3", reference:"samba-client-3.0.9-1.3E.10")) flag++;
  if (rpm_check(release:"RHEL3", reference:"samba-common-3.0.9-1.3E.10")) flag++;
  if (rpm_check(release:"RHEL3", reference:"samba-swat-3.0.9-1.3E.10")) flag++;

  if (rpm_check(release:"RHEL4", reference:"samba-3.0.10-1.4E.6.2")) flag++;
  if (rpm_check(release:"RHEL4", reference:"samba-client-3.0.10-1.4E.6.2")) flag++;
  if (rpm_check(release:"RHEL4", reference:"samba-common-3.0.10-1.4E.6.2")) flag++;
  if (rpm_check(release:"RHEL4", reference:"samba-swat-3.0.10-1.4E.6.2")) 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, "samba / samba-client / samba-common / samba-swat");
  }
}