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nessusThis script is Copyright (C) 2018-2022 and is owned by Tenable, Inc. or an Affiliate thereof.ALA_ALAS-2018-1094.NASL
HistoryOct 25, 2018 - 12:00 a.m.

Amazon Linux AMI : 389-ds-base (ALAS-2018-1094)

2018-10-2500:00:00
This script is Copyright (C) 2018-2022 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
11

7.1 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:N/I:N/A:C

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.025 Low

EPSS

Percentile

90.1%

A vulnerability was discovered in 389-ds-base. The lock controlling the error log was not correctly used when re-opening the log file in log__error_emergency(). An attacker could send a flood of modifications to a very large DN, which would cause slapd to crash.(CVE-2018-14624)

A race condition was found in the way 389-ds-base handles persistent search, resulting in a crash if the server is under load. An anonymous attacker could use this flaw to trigger a denial of service.(CVE-2018-10850)

A double-free of a password policy structure was found in the way slapd was handling certain errors during persistent search. A unauthenticated attacker could use this flaw to crash Directory Server.(CVE-2018-14638)

A flaw was found in the 389 Directory Server that allows users to cause a crash in the LDAP server using ldapsearch with server side sort.(CVE-2018-10935)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2018-1094.
#

include("compat.inc");

if (description)
{
  script_id(118361);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/02/04");

  script_cve_id("CVE-2018-10850", "CVE-2018-10935", "CVE-2018-14624", "CVE-2018-14638");
  script_xref(name:"ALAS", value:"2018-1094");

  script_name(english:"Amazon Linux AMI : 389-ds-base (ALAS-2018-1094)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote Amazon Linux AMI host is missing a security update."
  );
  script_set_attribute(
    attribute:"description",
    value:
"A vulnerability was discovered in 389-ds-base. The lock controlling
the error log was not correctly used when re-opening the log file in
log__error_emergency(). An attacker could send a flood of
modifications to a very large DN, which would cause slapd to
crash.(CVE-2018-14624)

A race condition was found in the way 389-ds-base handles persistent
search, resulting in a crash if the server is under load. An anonymous
attacker could use this flaw to trigger a denial of
service.(CVE-2018-10850)

A double-free of a password policy structure was found in the way
slapd was handling certain errors during persistent search. A
unauthenticated attacker could use this flaw to crash Directory
Server.(CVE-2018-14638)

A flaw was found in the 389 Directory Server that allows users to
cause a crash in the LDAP server using ldapsearch with server side
sort.(CVE-2018-10935)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/ALAS-2018-1094.html"
  );
  script_set_attribute(
    attribute:"solution",
    value:"Run 'yum update 389-ds-base' to update your system."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-10850");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:389-ds-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:389-ds-base-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:389-ds-base-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:389-ds-base-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:389-ds-base-snmp");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/06/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/10/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/10/25");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Amazon Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/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);

release = get_kb_item("Host/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "A")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux AMI", "Amazon Linux " + os_ver);
}

if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (rpm_check(release:"ALA", reference:"389-ds-base-1.3.7.5-28.58.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"389-ds-base-debuginfo-1.3.7.5-28.58.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"389-ds-base-devel-1.3.7.5-28.58.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"389-ds-base-libs-1.3.7.5-28.58.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"389-ds-base-snmp-1.3.7.5-28.58.amzn1")) 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, "389-ds-base / 389-ds-base-debuginfo / 389-ds-base-devel / etc");
}
VendorProductVersionCPE
amazonlinux389-ds-basep-cpe:/a:amazon:linux:389-ds-base
amazonlinux389-ds-base-debuginfop-cpe:/a:amazon:linux:389-ds-base-debuginfo
amazonlinux389-ds-base-develp-cpe:/a:amazon:linux:389-ds-base-devel
amazonlinux389-ds-base-libsp-cpe:/a:amazon:linux:389-ds-base-libs
amazonlinux389-ds-base-snmpp-cpe:/a:amazon:linux:389-ds-base-snmp
amazonlinuxcpe:/o:amazon:linux

7.1 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:N/I:N/A:C

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.025 Low

EPSS

Percentile

90.1%