An out-of-bounds memory read flaw was found in the way 389-ds-base handled certain LDAP search filters, affecting all versions including 1.4.x. 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.

This update for 389-ds to version 1.4.0.26 fixes the following issues :

Security issues fixed :

CVE-2016-5416: Fixed an information disclosure where a anonymous user could read the default ACI (bsc#991201).

CVE-2018-1054: Fixed a denial of service via search filters in SetUnicodeStringFromUTF_8() (bsc#1083689).

CVE-2018-1089: Fixed a buffer overflow via large filter value (bsc#1092187).

CVE-2018-10871: Fixed an information disclosure in certain plugins leading to the disclosure of plaintext password to an privileged attackers (bsc#1099465).

CVE-2018-14638: Fixed a denial of service through a crash in delete_passwdPolicy () (bsc#1108674).

CVE-2018-14648: Fixed a denial of service caused by malformed values in search queries (bsc#1109609).

CVE-2018-10935: Fixed a denial of service related to ldapsearch with server side sort (bsc#1105606).

CVE-2019-3883: Fixed a denial of service caused by hanging LDAP requests over TLS (bsc#1132385).

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

The remote NewStart CGSL host, running version MAIN 4.05, has 389-ds-base packages installed that are affected by multiple vulnerabilities:

  - 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)

  - 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)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote NewStart CGSL host, running version MAIN 5.04, has 389-ds-base packages installed that are affected by multiple vulnerabilities:

  - 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)

  - 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)

  - A stack buffer overflow 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-2017-15134)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

CVE-2015-1854 A flaw was found while doing authorization of modrdn operations. An unauthenticated attacker able to issue an ldapmodrdn call to the directory server could perform unauthorized modifications of entries in the directory server.

CVE-2017-15134 Improper handling of a search filter in slapi_filter_sprintf() in slapd/util.c can lead to remote server crash and denial of service.

CVE-2018-1054 When read access on <attribute_name> is enabled, a flaw in SetUnicodeStringFromUTF_8 function in collate.c, can lead to out-of-bounds memory operations. This might result in a server crash, caused by unauthorized users.

CVE-2018-1089 Any user (anonymous or authenticated) can crash ns-slapd with a crafted ldapsearch query with very long filter value.

CVE-2018-10850 Due to a race condition the server could crash in turbo mode (because of high traffic) or when a worker reads several requests in the read buffer (more_data). Thus an anonymous attacker could trigger a denial of service.

For Debian 8 'Jessie', these problems have been fixed in version 1.3.3.5-4+deb8u1.

We recommend that you upgrade your 389-ds-base 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.

According to the versions of the 389-ds-base packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - It was found that 389-ds-base since 1.3.6.1 up to and     including 1.4.0.3 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)

  - 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)

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

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)

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 )

Security Fix(es) :

  - 389-ds-base: remote Denial of Service (DoS) via search     filters in SetUnicodeStringFromUTF_8 in collate.c     (CVE-2018-1054)

  - 389-ds-base: Authentication bypass due to lack of size     check in slapi_ct_memcmp function in ch_malloc.c     (CVE-2017-15135)

An update for 389-ds-base is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

389 Directory Server is an LDAP version 3 (LDAPv3) compliant server.
The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration.

Security Fix(es) :

* 389-ds-base: remote Denial of Service (DoS) via search filters in SetUnicodeStringFromUTF_8 in collate.c (CVE-2018-1054)

* 389-ds-base: Authentication bypass due to lack of size check in slapi_ct_memcmp function in ch_malloc.c (CVE-2017-15135)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

The CVE-2017-15135 issue was discovered by Martin Poole (Red Hat).

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:0515 advisory.

  - 389-ds-base: Authentication bypass due to lack of size check in slapi_ct_memcmp function in ch_malloc.c     (CVE-2017-15135)

  - 389-ds-base: remote Denial of Service (DoS) via search filters in SetUnicodeStringFromUTF_8 in collate.c     (CVE-2018-1054)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

From Red Hat Security Advisory 2018:0515 :

An update for 389-ds-base is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

389 Directory Server is an LDAP version 3 (LDAPv3) compliant server.
The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration.

Security Fix(es) :

* 389-ds-base: remote Denial of Service (DoS) via search filters in SetUnicodeStringFromUTF_8 in collate.c (CVE-2018-1054)

* 389-ds-base: Authentication bypass due to lack of size check in slapi_ct_memcmp function in ch_malloc.c (CVE-2017-15135)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

The CVE-2017-15135 issue was discovered by Martin Poole (Red Hat).

An update for 389-ds-base is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

389 Directory Server is an LDAP version 3 (LDAPv3) compliant server.
The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration.

Security Fix(es) :

* 389-ds-base: remote Denial of Service (DoS) via search filters in SetUnicodeStringFromUTF_8 in collate.c (CVE-2018-1054)

* 389-ds-base: Authentication bypass due to lack of size check in slapi_ct_memcmp function in ch_malloc.c (CVE-2017-15135)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

The CVE-2017-15135 issue was discovered by Martin Poole (Red Hat).

Bug Fix(es) :

* Previously, if an administrator configured an index for an attribute with a specific matching rule in the 'nsMatchingRule' parameter, Directory Server did not use the retrieved indexer. As a consequence, Directory Server did not index the values of this attribute with the specified matching rules, and searches with extended filters were unindexed. With this update, Directory Server uses the retrieved indexer that processes the specified matching rule. As a result, searches using extended filters with a specified matching rule are now indexed. (BZ#1536343)

Security Fix(es) :

  - 389-ds-base: remote Denial of Service (DoS) via search     filters in SetUnicodeStringFromUTF_8 in collate.c     (CVE-2018-1054)

  - 389-ds-base: Authentication bypass due to lack of size     check in slapi_ct_memcmp function in ch_malloc.c     (CVE-2017-15135)

Bug Fix(es) :

  - Previously, if an administrator configured an index for     an attribute with a specific matching rule in the     'nsMatchingRule' parameter, Directory Server did not use     the retrieved indexer. As a consequence, Directory     Server did not index the values of this attribute with     the specified matching rules, and searches with extended     filters were unindexed. With this update, Directory     Server uses the retrieved indexer that processes the     specified matching rule. As a result, searches using     extended filters with a specified matching rule are now     indexed.

From Red Hat Security Advisory 2018:0414 :

An update for 389-ds-base is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

389 Directory Server is an LDAP version 3 (LDAPv3) compliant server.
The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration.

Security Fix(es) :

* 389-ds-base: remote Denial of Service (DoS) via search filters in SetUnicodeStringFromUTF_8 in collate.c (CVE-2018-1054)

* 389-ds-base: Authentication bypass due to lack of size check in slapi_ct_memcmp function in ch_malloc.c (CVE-2017-15135)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

The CVE-2017-15135 issue was discovered by Martin Poole (Red Hat).

Bug Fix(es) :

* Previously, if an administrator configured an index for an attribute with a specific matching rule in the 'nsMatchingRule' parameter, Directory Server did not use the retrieved indexer. As a consequence, Directory Server did not index the values of this attribute with the specified matching rules, and searches with extended filters were unindexed. With this update, Directory Server uses the retrieved indexer that processes the specified matching rule. As a result, searches using extended filters with a specified matching rule are now indexed. (BZ#1536343)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:0414 advisory.

  - 389-ds-base: Authentication bypass due to lack of size check in slapi_ct_memcmp function in ch_malloc.c     (CVE-2017-15135)

  - 389-ds-base: remote Denial of Service (DoS) via search filters in SetUnicodeStringFromUTF_8 in collate.c     (CVE-2018-1054)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
128021	SUSE SLED15 / SLES15 Security Update : 389-ds (SUSE-SU-2019:2155-1)	Nessus	SuSE Local Security Checks	high
127369	NewStart CGSL MAIN 4.05 : 389-ds-base Multiple Vulnerabilities (NS-SA-2019-0123)	Nessus	NewStart CGSL Local Security Checks	high
127155	NewStart CGSL MAIN 5.04 : 389-ds-base Multiple Vulnerabilities (NS-SA-2019-0009)	Nessus	NewStart CGSL Local Security Checks	high
111086	Debian DLA-1428-1 : 389-ds-base security update	Nessus	Debian Local Security Checks	high
109475	EulerOS 2.0 SP2 : 389-ds-base (EulerOS-SA-2018-1077)	Nessus	Huawei Local Security Checks	high
109474	EulerOS 2.0 SP1 : 389-ds-base (EulerOS-SA-2018-1076)	Nessus	Huawei Local Security Checks	high
109134	Amazon Linux 2 : 389-ds-base (ALAS-2018-980)	Nessus	Amazon Linux Local Security Checks	high
108844	Amazon Linux AMI : 389-ds-base (ALAS-2018-980)	Nessus	Amazon Linux Local Security Checks	high
108363	Scientific Linux Security Update : 389-ds-base on SL6.x i386/x86_64 (20180313)	Nessus	Scientific Linux Local Security Checks	high
108342	CentOS 6 : 389-ds-base (CESA-2018:0515)	Nessus	CentOS Local Security Checks	high
108330	RHEL 6 : 389-ds-base (RHSA-2018:0515)	Nessus	Red Hat Local Security Checks	high
108320	Oracle Linux 6 : 389-ds-base (ELSA-2018-0515)	Nessus	Oracle Linux Local Security Checks	high
107273	CentOS 7 : 389-ds-base (CESA-2018:0414)	Nessus	CentOS Local Security Checks	high
107209	Scientific Linux Security Update : 389-ds-base on SL7.x x86_64 (20180306)	Nessus	Scientific Linux Local Security Checks	high
107205	Oracle Linux 7 : 389-ds-base (ELSA-2018-0414)	Nessus	Oracle Linux Local Security Checks	high
107190	RHEL 7 : 389-ds-base (RHSA-2018:0414)	Nessus	Red Hat Local Security Checks	high

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