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

2017-05-25T00:00:00
ID SL_20170524_SAMBA4_ON_SL6_X.NASL
Type nessus
Reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-01-02T00:00:00

Description

Security Fix(es) :

  • A remote code execution flaw was found in Samba. A malicious authenticated samba client, having write access to the samba share, could use this flaw to execute arbitrary code as root. (CVE-2017-7494)

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

include("compat.inc");

if (description)
{
  script_id(100402);
  script_version("3.12");
  script_cvs_date("Date: 2019/04/10 16:10:18");

  script_cve_id("CVE-2017-7494");

  script_name(english:"Scientific Linux Security Update : samba4 on SL6.x i386/x86_64 (SambaCry)");
  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:
"Security Fix(es) :

  - A remote code execution flaw was found in Samba. A
    malicious authenticated samba client, having write
    access to the samba share, could use this flaw to
    execute arbitrary code as root. (CVE-2017-7494)"
  );
  # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1705&L=scientific-linux-errata&F=&S=&P=7233
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?cc175005"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Samba is_known_pipename() Arbitrary Module Load');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:'CANVAS');

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/05/24");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/05/25");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2019 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("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");
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:"samba4-4.2.10-10.el6_9")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-client-4.2.10-10.el6_9")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-common-4.2.10-10.el6_9")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-dc-4.2.10-10.el6_9")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-dc-libs-4.2.10-10.el6_9")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-debuginfo-4.2.10-10.el6_9")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-devel-4.2.10-10.el6_9")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-libs-4.2.10-10.el6_9")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-pidl-4.2.10-10.el6_9")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-python-4.2.10-10.el6_9")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-test-4.2.10-10.el6_9")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-winbind-4.2.10-10.el6_9")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-winbind-clients-4.2.10-10.el6_9")) flag++;
if (rpm_check(release:"SL6", reference:"samba4-winbind-krb5-locator-4.2.10-10.el6_9")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");