Scientific Linux Security Update : samba and samba3x on SL5.x, SL6.x i386/x86_64

2012-08-01T00:00:00
ID SL_20120430_SAMBA_AND_SAMBA3X_ON_SL5_X.NASL
Type nessus
Reporter Tenable
Modified 2014-02-14T00:00:00

Description

Samba is an open source implementation of the Server Message Block (SMB) or Common Internet File System (CIFS) protocol, which allows PC-compatible machines to share files, printers, and other information.

A flaw was found in the way Samba handled certain Local Security Authority (LSA) Remote Procedure Calls (RPC). An authenticated user could use this flaw to issue an RPC call that would modify the privileges database on the Samba server, allowing them to steal the ownership of files and directories that are being shared by the Samba server, and create, delete, and modify user accounts, as well as other Samba server administration tasks. (CVE-2012-2111)

Users of Samba are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue. After installing this update, the smb service will be restarted automatically.

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

include("compat.inc");

if (description)
{
  script_id(61308);
  script_version("$Revision: 1.9 $");
  script_cvs_date("$Date: 2014/02/14 14:04:44 $");

  script_cve_id("CVE-2012-2111");

  script_name(english:"Scientific Linux Security Update : samba and samba3x on SL5.x, SL6.x i386/x86_64");
  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:
"Samba is an open source implementation of the Server Message Block
(SMB) or Common Internet File System (CIFS) protocol, which allows
PC-compatible machines to share files, printers, and other
information.

A flaw was found in the way Samba handled certain Local Security
Authority (LSA) Remote Procedure Calls (RPC). An authenticated user
could use this flaw to issue an RPC call that would modify the
privileges database on the Samba server, allowing them to steal the
ownership of files and directories that are being shared by the Samba
server, and create, delete, and modify user accounts, as well as other
Samba server administration tasks. (CVE-2012-2111)

Users of Samba are advised to upgrade to these updated packages, which
contain a backported patch to resolve this issue. After installing
this update, the smb service will be restarted automatically."
  );
  # http://listserv.fnal.gov/scripts/wa.exe?A2=ind1204&L=scientific-linux-errata&T=0&P=2540
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?5cef7478"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P");

  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:"2012/04/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/08/01");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012-2014 Tenable Network Security, Inc.");
  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:"SL5", reference:"samba3x-3.5.10-0.109.el5_8")) flag++;
if (rpm_check(release:"SL5", reference:"samba3x-client-3.5.10-0.109.el5_8")) flag++;
if (rpm_check(release:"SL5", reference:"samba3x-common-3.5.10-0.109.el5_8")) flag++;
if (rpm_check(release:"SL5", reference:"samba3x-debuginfo-3.5.10-0.109.el5_8")) flag++;
if (rpm_check(release:"SL5", reference:"samba3x-doc-3.5.10-0.109.el5_8")) flag++;
if (rpm_check(release:"SL5", reference:"samba3x-domainjoin-gui-3.5.10-0.109.el5_8")) flag++;
if (rpm_check(release:"SL5", reference:"samba3x-swat-3.5.10-0.109.el5_8")) flag++;
if (rpm_check(release:"SL5", reference:"samba3x-winbind-3.5.10-0.109.el5_8")) flag++;
if (rpm_check(release:"SL5", reference:"samba3x-winbind-devel-3.5.10-0.109.el5_8")) flag++;

if (rpm_check(release:"SL6", reference:"libsmbclient-3.5.10-116.el6_2")) flag++;
if (rpm_check(release:"SL6", reference:"libsmbclient-devel-3.5.10-116.el6_2")) flag++;
if (rpm_check(release:"SL6", reference:"samba-3.5.10-116.el6_2")) flag++;
if (rpm_check(release:"SL6", reference:"samba-client-3.5.10-116.el6_2")) flag++;
if (rpm_check(release:"SL6", reference:"samba-common-3.5.10-116.el6_2")) flag++;
if (rpm_check(release:"SL6", reference:"samba-debuginfo-3.5.10-116.el6_2")) flag++;
if (rpm_check(release:"SL6", reference:"samba-doc-3.5.10-116.el6_2")) flag++;
if (rpm_check(release:"SL6", reference:"samba-domainjoin-gui-3.5.10-116.el6_2")) flag++;
if (rpm_check(release:"SL6", reference:"samba-swat-3.5.10-116.el6_2")) flag++;
if (rpm_check(release:"SL6", reference:"samba-winbind-3.5.10-116.el6_2")) flag++;
if (rpm_check(release:"SL6", reference:"samba-winbind-clients-3.5.10-116.el6_2")) flag++;
if (rpm_check(release:"SL6", reference:"samba-winbind-devel-3.5.10-116.el6_2")) flag++;
if (rpm_check(release:"SL6", reference:"samba-winbind-krb5-locator-3.5.10-116.el6_2")) flag++;


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