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nessusThis script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.DEBIAN_DLA-2199.NASL
HistoryMay 04, 2020 - 12:00 a.m.

Debian DLA-2199-1 : openldap security update

2020-05-0400:00:00
This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
15

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.6 High

AI Score

Confidence

High

0.124 Low

EPSS

Percentile

95.4%

A vulnerability was discovered in OpenLDAP, a free implementation of the Lightweight Directory Access Protocol. LDAP search filters with nested boolean expressions can result in denial of service (slapd daemon crash).

For Debian 8 β€˜Jessie’, this problem has been fixed in version 2.4.40+dfsg-1+deb8u6.

We recommend that you upgrade your openldap packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-2199-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(136289);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/13");

  script_cve_id("CVE-2020-12243");
  script_xref(name:"IAVB", value:"2020-B-0028-S");

  script_name(english:"Debian DLA-2199-1 : openldap security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"A vulnerability was discovered in OpenLDAP, a free implementation of
the Lightweight Directory Access Protocol. LDAP search filters with
nested boolean expressions can result in denial of service (slapd
daemon crash).

For Debian 8 'Jessie', this problem has been fixed in version
2.4.40+dfsg-1+deb8u6.

We recommend that you upgrade your openldap packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues.");
  script_set_attribute(attribute:"see_also", value:"https://lists.debian.org/debian-lts-announce/2020/05/msg00001.html");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/jessie/openldap");
  script_set_attribute(attribute:"solution", value:
"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/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:N/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-2020-12243");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/04/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/05/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/04");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ldap-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libldap-2.4-2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libldap-2.4-2-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libldap2-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:slapd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:slapd-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:slapd-smbk5pwd");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2020-2024 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+deb8u6")) flag++;
if (deb_check(release:"8.0", prefix:"libldap-2.4-2", reference:"2.4.40+dfsg-1+deb8u6")) flag++;
if (deb_check(release:"8.0", prefix:"libldap-2.4-2-dbg", reference:"2.4.40+dfsg-1+deb8u6")) flag++;
if (deb_check(release:"8.0", prefix:"libldap2-dev", reference:"2.4.40+dfsg-1+deb8u6")) flag++;
if (deb_check(release:"8.0", prefix:"slapd", reference:"2.4.40+dfsg-1+deb8u6")) flag++;
if (deb_check(release:"8.0", prefix:"slapd-dbg", reference:"2.4.40+dfsg-1+deb8u6")) flag++;
if (deb_check(release:"8.0", prefix:"slapd-smbk5pwd", reference:"2.4.40+dfsg-1+deb8u6")) 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");
VendorProductVersionCPE
debiandebian_linuxldap-utilsp-cpe:/a:debian:debian_linux:ldap-utils
debiandebian_linuxlibldap-2.4-2p-cpe:/a:debian:debian_linux:libldap-2.4-2
debiandebian_linuxlibldap-2.4-2-dbgp-cpe:/a:debian:debian_linux:libldap-2.4-2-dbg
debiandebian_linuxlibldap2-devp-cpe:/a:debian:debian_linux:libldap2-dev
debiandebian_linuxslapdp-cpe:/a:debian:debian_linux:slapd
debiandebian_linuxslapd-dbgp-cpe:/a:debian:debian_linux:slapd-dbg
debiandebian_linuxslapd-smbk5pwdp-cpe:/a:debian:debian_linux:slapd-smbk5pwd
debiandebian_linux8.0cpe:/o:debian:debian_linux:8.0

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.6 High

AI Score

Confidence

High

0.124 Low

EPSS

Percentile

95.4%