Authentication bypass due to lack of size check in slapi_ct_memcmp function in ch_malloc.c :
It was found that 389-ds-base did not always handle internal hash comparison operations correctly during the authentication process. A remote, unauthenticated attacker could potentially use this flaw to bypass the authentication process under very rare and specific circumstances. (CVE-2017-15135)
Remote Denial of Service (DoS) via search filters in SetUnicodeStringFromUTF_8 in collate.c :
An out-of-bounds memory read flaw was found in the way 389-ds-base handled certain LDAP search filters. A remote, unauthenticated attacker could potentially use this flaw to make ns-slapd crash via a specially crafted LDAP request, thus resulting in denial of service.
(CVE-2018-1054 )
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2018-980.
#
include("compat.inc");
if (description)
{
script_id(108844);
script_version("1.2");
script_cvs_date("Date: 2018/04/18 15:09:36");
script_cve_id("CVE-2017-15135", "CVE-2018-1054");
script_xref(name:"ALAS", value:"2018-980");
script_name(english:"Amazon Linux AMI : 389-ds-base (ALAS-2018-980)");
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:
"Authentication bypass due to lack of size check in slapi_ct_memcmp
function in ch_malloc.c :
It was found that 389-ds-base did not always handle internal hash
comparison operations correctly during the authentication process. A
remote, unauthenticated attacker could potentially use this flaw to
bypass the authentication process under very rare and specific
circumstances. (CVE-2017-15135)
Remote Denial of Service (DoS) via search filters in
SetUnicodeStringFromUTF_8 in collate.c :
An out-of-bounds memory read flaw was found in the way 389-ds-base
handled certain LDAP search filters. A remote, unauthenticated
attacker could potentially use this flaw to make ns-slapd crash via a
specially crafted LDAP request, thus resulting in denial of service.
(CVE-2018-1054 )"
);
script_set_attribute(
attribute:"see_also",
value:"https://alas.aws.amazon.com/ALAS-2018-980.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:L/Au:N/C:N/I:N/A:P");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
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:"patch_publication_date", value:"2018/04/05");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/04/06");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2018 Tenable Network Security, Inc.");
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-1.3.6.1-28.54.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"389-ds-base-debuginfo-1.3.6.1-28.54.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"389-ds-base-devel-1.3.6.1-28.54.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"389-ds-base-libs-1.3.6.1-28.54.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"389-ds-base-snmp-1.3.6.1-28.54.amzn1")) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
else security_warning(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");
}
Vendor | Product | Version | CPE |
---|---|---|---|
amazon | linux | 389-ds-base | p-cpe:/a:amazon:linux:389-ds-base |
amazon | linux | 389-ds-base-debuginfo | p-cpe:/a:amazon:linux:389-ds-base-debuginfo |
amazon | linux | 389-ds-base-devel | p-cpe:/a:amazon:linux:389-ds-base-devel |
amazon | linux | 389-ds-base-libs | p-cpe:/a:amazon:linux:389-ds-base-libs |
amazon | linux | 389-ds-base-snmp | p-cpe:/a:amazon:linux:389-ds-base-snmp |
amazon | linux | cpe:/o:amazon:linux |