GLSA-200803-28 : OpenLDAP: Denial of Service vulnerabilities

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 200803-28.
#
# The advisory text is Copyright (C) 2001-2015 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

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

if (description)
{
  script_id(31634);
  script_version("1.15");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2007-5707", "CVE-2007-5708", "CVE-2008-0658");
  script_xref(name:"GLSA", value:"200803-28");

  script_name(english:"GLSA-200803-28 : OpenLDAP: Denial of Service vulnerabilities");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-200803-28
(OpenLDAP: Denial of Service vulnerabilities)

    The following errors have been discovered in OpenLDAP:
    Tony Blake discovered an error which exists within the normalisation of
    'objectClasses' (CVE-2007-5707).
    Thomas Sesselmann reported that, when running as a proxy-caching server
    the 'add_filter_attrs()' function in servers/slapd/overlay/pcache.c
    does not correctly NULL terminate 'new_attrs' (CVE-2007-5708).
    A double-free bug exists in attrs_free() in the file
    servers/slapd/back-bdb/modrdn.c, which was discovered by Jonathan
    Clarke (CVE-2008-0658).
  
Impact :

    A remote attacker can cause a Denial of Serivce by sending a malformed
    'objectClasses' attribute, and via unknown vectors that prevent the
    'new_attrs' array from being NULL terminated, and via a modrdn
    operation with a NOOP (LDAP_X_NO_OPERATION) control.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200803-28"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All OpenLDAP users should upgrade to the latest version:
    # emerge --sync
    # emerge --ask --oneshot --verbose '>=net-nds/openldap-2.3.41'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C");
  script_cwe_id(399);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:openldap");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2008/03/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2008/03/21");
  script_set_attribute(attribute:"vuln_publication_date", value:"2007/10/26");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2008-2021 Tenable Network Security, Inc.");
  script_family(english:"Gentoo Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"net-nds/openldap", unaffected:make_list("ge 2.3.41"), vulnerable:make_list("lt 2.3.41"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "OpenLDAP");
}