Scientific Linux Security Update : samba4 on SL6.x i386/x86_64 (20160107)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#

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

if (description)
{
  script_id(87842);
  script_version("2.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2015-5252", "CVE-2015-5296", "CVE-2015-5299", "CVE-2015-5330", "CVE-2015-7540");

  script_name(english:"Scientific Linux Security Update : samba4 on SL6.x i386/x86_64 (20160107)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Scientific Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"A denial of service flaw was found in the LDAP server provided by the
AD DC in the Samba process daemon. A remote attacker could exploit
this flaw by sending a specially crafted packet, which could cause the
server to consume an excessive amount of memory and crash.
(CVE-2015-7540)

Multiple buffer over-read flaws were found in the way Samba handled
malformed inputs in certain encodings. An authenticated, remote
attacker could possibly use these flaws to disclose portions of the
server memory. (CVE-2015-5330)

A man-in-the-middle vulnerability was found in the way 'connection
signing' was implemented by Samba. A remote attacker could use this
flaw to downgrade an existing Samba client connection and force the
use of plain text. (CVE-2015-5296)

A missing access control flaw was found in Samba. A remote,
authenticated attacker could use this flaw to view the current
snapshot on a Samba share, despite not having DIRECTORY_LIST access
rights. (CVE-2015-5299)

An access flaw was found in the way Samba verified symbolic links when
creating new files on a Samba share. A remote attacker could exploit
this flaw to gain access to files outside of Samba's share path.
(CVE-2015-5252)

After installing this update, the smb service will be restarted
automatically."
  );
  # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1601&L=scientific-linux-errata&F=&S=&P=1884
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?4eb52d59"
  );
  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:P/A:N");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-dc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-dc-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-pidl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-python");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-swat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-test");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-winbind");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-winbind-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:samba4-winbind-krb5-locator");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/12/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/01/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/01/11");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Scientific Linux Local Security Checks");

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

  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) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
os_ver = pregmatch(pattern: "Scientific Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Scientific Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Scientific Linux 6.x", "Scientific Linux " + 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 (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);


flag = 0;
if (rpm_check(release:"SL6", reference:"samba4-4.0.0-67.el6_7.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-client-4.0.0-67.el6_7.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-common-4.0.0-67.el6_7.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-dc-4.0.0-67.el6_7.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-dc-libs-4.0.0-67.el6_7.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-debuginfo-4.0.0-67.el6_7.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-devel-4.0.0-67.el6_7.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-libs-4.0.0-67.el6_7.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-pidl-4.0.0-67.el6_7.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-python-4.0.0-67.el6_7.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-swat-4.0.0-67.el6_7.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-test-4.0.0-67.el6_7.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-winbind-4.0.0-67.el6_7.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-winbind-clients-4.0.0-67.el6_7.rc4")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-winbind-krb5-locator-4.0.0-67.el6_7.rc4")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "samba4 / samba4-client / samba4-common / samba4-dc / samba4-dc-libs / etc");
}