GLSA-200701-19 : OpenLDAP: Insecure usage of /tmp during installation

#%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 200701-19.
#
# 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(24255);
  script_version("1.15");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2007-0476");
  script_xref(name:"GLSA", value:"200701-19");

  script_name(english:"GLSA-200701-19 : OpenLDAP: Insecure usage of /tmp during installation");
  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-200701-19
(OpenLDAP: Insecure usage of /tmp during installation)

    Tavis Ormandy of the Gentoo Linux Security Team has discovered that the
    file gencert.sh distributed with the Gentoo ebuild for OpenLDAP does
    not exit upon the existence of a directory in /tmp during installation
    allowing for directory traversal.
  
Impact :

    A local attacker could create a symbolic link in /tmp and potentially
    overwrite arbitrary system files upon a privileged user emerging
    OpenLDAP.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200701-19"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All OpenLDAP users should upgrade to the latest version:
    # emerge --sync
    # emerge --ask --oneshot --verbose 'net-nds/openldap'"
  );
  script_set_cvss_base_vector("CVSS2#AV:L/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:gentoo:linux:openldap");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2007/01/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/01/26");
  script_set_attribute(attribute:"vuln_publication_date", value:"2007/01/23");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2007-2021 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 2.1.30-r10", "ge 2.2.28-r7", "ge 2.3.30-r2"), vulnerable:make_list("lt 2.1.30-r10", "lt 2.2.28-r7", "lt 2.3.30-r2"))) flag++;

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