Oracle Linux 4 : nss_ldap (ELSA-2006-0719)

2013-07-12T00:00:00
ID ORACLELINUX_ELSA-2006-0719.NASL
Type nessus
Reporter Tenable
Modified 2018-08-13T00:00:00

Description

From Red Hat Security Advisory 2006:0719 :

Updated nss_ldap packages that fix a security flaw are now available for Red Hat Enterprise Linux 4.

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

nss_ldap is a set of C library extensions that allow X.500 and LDAP directory servers to be used as primary sources for aliases, ethers, groups, hosts, networks, protocols, users, RPCs, services, and shadow passwords.

A flaw was found in the way nss_ldap handled a PasswordPolicyResponse control sent by an LDAP server. If an LDAP server responded to an authentication request with a PasswordPolicyResponse control, it was possible for an application using nss_ldap to improperly authenticate certain users. (CVE-2006-5170)

This flaw was only exploitable within applications which did not properly process nss_ldap error messages. Only xscreensaver is currently known to exhibit this behavior.

All users of nss_ldap should upgrade to these updated packages, which contain a backported patch that resolves this issue.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2006:0719 and 
# Oracle Linux Security Advisory ELSA-2006-0719 respectively.
#

include("compat.inc");

if (description)
{
  script_id(67415);
  script_version("1.4");
  script_cvs_date("Date: 2018/08/13 14:32:36");

  script_cve_id("CVE-2006-5170");
  script_xref(name:"RHSA", value:"2006:0719");

  script_name(english:"Oracle Linux 4 : nss_ldap (ELSA-2006-0719)");
  script_summary(english:"Checks rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Oracle Linux host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"From Red Hat Security Advisory 2006:0719 :

Updated nss_ldap packages that fix a security flaw are now available
for Red Hat Enterprise Linux 4.

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

nss_ldap is a set of C library extensions that allow X.500 and LDAP
directory servers to be used as primary sources for aliases, ethers,
groups, hosts, networks, protocols, users, RPCs, services, and shadow
passwords.

A flaw was found in the way nss_ldap handled a PasswordPolicyResponse
control sent by an LDAP server. If an LDAP server responded to an
authentication request with a PasswordPolicyResponse control, it was
possible for an application using nss_ldap to improperly authenticate
certain users. (CVE-2006-5170)

This flaw was only exploitable within applications which did not
properly process nss_ldap error messages. Only xscreensaver is
currently known to exhibit this behavior.

All users of nss_ldap should upgrade to these updated packages, which
contain a backported patch that resolves this issue."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2006-November/000019.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected nss_ldap package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:nss_ldap");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:4");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/11/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/07/12");
  script_set_attribute(attribute:"vuln_publication_date", value:"2006/09/23");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2018 Tenable Network Security, Inc.");
  script_family(english:"Oracle Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleLinux", "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);
if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux");
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !eregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
os_ver = eregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux");
os_ver = os_ver[1];
if (! ereg(pattern:"^4([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 4", "Oracle 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 ("x86_64" >!< cpu && "ia64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Oracle Linux", cpu);

flag = 0;
if (rpm_check(release:"EL4", cpu:"i386", reference:"nss_ldap-226-17")) flag++;
if (rpm_check(release:"EL4", cpu:"x86_64", reference:"nss_ldap-226-17")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "nss_ldap");
}