Debian DSA-3868-1 : openldap - security update

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-3868. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(100522);
  script_version("3.11");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/12/17");

  script_cve_id("CVE-2017-9287");
  script_xref(name:"DSA", value:"3868");

  script_name(english:"Debian DSA-3868-1 : openldap - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
  script_set_attribute(attribute:"description", value:
"Karsten Heymann discovered that the OpenLDAP directory server can be
crashed by performing a paged search with a page size of 0, resulting
in denial of service. This vulnerability is limited to the MDB storage
backend.");
  script_set_attribute(attribute:"see_also", value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863563");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/jessie/openldap");
  script_set_attribute(attribute:"see_also", value:"https://www.debian.org/security/2017/dsa-3868");
  script_set_attribute(attribute:"solution", value:
"Upgrade the openldap packages.

For the stable distribution (jessie), this problem has been fixed in
version 2.4.40+dfsg-1+deb8u3.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-9287");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/05/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/05/31");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openldap");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Debian Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2017-2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"8.0", prefix:"ldap-utils", reference:"2.4.40+dfsg-1+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"libldap-2.4-2", reference:"2.4.40+dfsg-1+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"libldap-2.4-2-dbg", reference:"2.4.40+dfsg-1+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"libldap2-dev", reference:"2.4.40+dfsg-1+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"slapd", reference:"2.4.40+dfsg-1+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"slapd-dbg", reference:"2.4.40+dfsg-1+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"slapd-smbk5pwd", reference:"2.4.40+dfsg-1+deb8u3")) flag++;

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