In 389-ds-base up to version 1.4.1.2, requests are handled by workers threads. Each sockets will be waited by the worker for at most 'ioblocktimeout' seconds. However this timeout applies only for un-encrypted requests. Connections using SSL/TLS are not taking this timeout into account during reads, and may hang longer.An unauthenticated attacker could repeatedly create hanging LDAP requests to hang all the workers, resulting in a Denial of Service.

The remote Redhat Enterprise Linux 6 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - 389-ds-base: Password brute-force possible for locked account due to different return codes     (CVE-2017-7551)

  - 389-ds-base before versions 1.4.0.10, 1.3.8.3 is vulnerable to a race condition 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)

  - 389-ds-base before versions 1.3.8.5, 1.4.0.12 is vulnerable to a Cleartext Storage of Sensitive     Information. By default, when the Replica and/or retroChangeLog plugins are enabled, 389-ds-base stores     passwords in plaintext format in their respective changelog files. An attacker with sufficiently high     privileges, such as root or Directory Manager, can query these files in order to retrieve plaintext     passwords. (CVE-2018-10871)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

This plugin has been deprecated as it does not adhere to established standards for this style of check.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-3401 advisory.

  - In 389-ds-base up to version 1.4.1.2, requests are handled by workers threads. Each sockets will be waited     by the worker for at most 'ioblocktimeout' seconds. However this timeout applies only for un-encrypted     requests. Connections using SSL/TLS are not taking this timeout into account during reads, and may hang     longer.An unauthenticated attacker could repeatedly create hanging LDAP requests to hang all the workers,     resulting in a Denial of Service. (CVE-2019-3883)

  - A flaw was found in the 'deref' plugin of 389-ds-base where it could use the 'search' permission to     display attribute values. In some configurations, this could allow an authenticated attacker to view     private attributes, such as password hashes. (CVE-2019-14824)

  - 389-ds-base before versions 1.3.8.5, 1.4.0.12 is vulnerable to a Cleartext Storage of Sensitive     Information. By default, when the Replica and/or retroChangeLog plugins are enabled, 389-ds-base stores     passwords in plaintext format in their respective changelog files. An attacker with sufficiently high     privileges, such as root or Directory Manager, can query these files in order to retrieve plaintext     passwords. (CVE-2018-10871)

  - A flaw has been found in 389-ds-base versions 1.4.x.x before 1.4.1.3. When executed in verbose mode, the     dscreate and dsconf commands may display sensitive information, such as the Directory Manager password. An     attacker, able to see the screen or record the terminal standard error output, could use this flaw to gain     sensitive information. (CVE-2019-10224)

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

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3399 advisory.

  - A flaw has been found in 389-ds-base versions 1.4.x.x before 1.4.1.3. When executed in verbose mode, the     dscreate and dsconf commands may display sensitive information, such as the Directory Manager password. An     attacker, able to see the screen or record the terminal standard error output, could use this flaw to gain     sensitive information. (CVE-2019-10224)

  - A flaw was found in the 'deref' plugin of 389-ds-base where it could use the 'search' permission to     display attribute values. In some configurations, this could allow an authenticated attacker to view     private attributes, such as password hashes. (CVE-2019-14824)

  - In 389-ds-base up to version 1.4.1.2, requests are handled by workers threads. Each sockets will be waited     by the worker for at most 'ioblocktimeout' seconds. However this timeout applies only for un-encrypted     requests. Connections using SSL/TLS are not taking this timeout into account during reads, and may hang     longer.An unauthenticated attacker could repeatedly create hanging LDAP requests to hang all the workers,     resulting in a Denial of Service. (CVE-2019-3883)

  - When using a sync_repl client in 389-ds-base, an authenticated attacker can cause a NULL pointer     dereference using a specially crafted query, causing a crash. (CVE-2021-3514)

  - A flaw was found in 389-ds-base. If an asterisk is imported as password hashes, either accidentally or     maliciously, then instead of being inactive, any password will successfully match during authentication.
    This flaw allows an attacker to successfully authenticate as a user whose password was disabled.
    (CVE-2021-3652)

  - A double-free was found in the way 389-ds-base handles virtual attributes context in persistent searches.
    An attacker could send a series of search requests, forcing the server to behave unexpectedly, and crash.
    (CVE-2021-4091)

  - A vulnerability was discovered in the 389 Directory Server that allows an unauthenticated attacker with     network access to the LDAP port to cause a denial of service. The denial of service is triggered by a     single message sent over a TCP connection, no bind or other authentication is required. The message     triggers a segmentation fault that results in slapd crashing. (CVE-2022-0918)

  - A vulnerability was found in the 389 Directory Server that allows expired passwords to access the database     to cause improper authentication. (CVE-2022-0996)

  - A flaw was found In 389-ds-base. When the Content Synchronization plugin is enabled, an authenticated user     can reach a NULL pointer dereference using a specially crafted query. This flaw allows an authenticated     attacker to cause a denial of service. This CVE is assigned against an incomplete fix of CVE-2021-3514.
    (CVE-2022-2850)

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

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2019:3401 advisory.

  - 389-ds-base: replication and the Retro Changelog plugin store plaintext password by default     (CVE-2018-10871)

  - 389-ds-base: using dscreate in verbose mode results in information disclosure (CVE-2019-10224)

  - 389-ds-base: Read permission check bypass via the deref plugin (CVE-2019-14824)

  - 389-ds-base: DoS via hanging secured connections (CVE-2019-3883)

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

The version of 389-ds-base installed on the remote host is prior to 1.3.9.1-12.65. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2020-1334 advisory.

    389-ds-base before versions 1.3.8.5, 1.4.0.12 is vulnerable to a Cleartext Storage of Sensitive     Information. By default, when the Replica and/or retroChangeLog plugins are enabled, 389-ds-base stores     passwords in plaintext format in their respective changelog files. An attacker with sufficiently high     privileges, such as root or Directory Manager, can query these files in order to retrieve plaintext     passwords.(CVE-2018-10871)

    A flaw has been found in 389-ds-base versions 1.4.x.x before 1.4.1.3. When executed in verbose mode, the     dscreate and dsconf commands may display sensitive information, such as the Directory Manager password. An     attacker, able to see the screen or record the terminal standard error output, could use this flaw to gain     sensitive information.(CVE-2019-10224)

    A flaw was found in the 'deref' plugin of 389-ds-base where it could use the 'search' permission to     display attribute values. In some configurations, this could allow an authenticated attacker to view     private attributes, such as password hashes.(CVE-2019-14824)

    In 389-ds-base up to version 1.4.1.2, requests are handled by workers threads. Each sockets will be waited     by the worker for at most 'ioblocktimeout' seconds. However this timeout applies only for un-encrypted     requests. Connections using SSL/TLS are not taking this timeout into account during reads, and may hang     longer.An unauthenticated attacker could repeatedly create hanging LDAP requests to hang all the workers,     resulting in a Denial of Service.(CVE-2019-3883)

    It was found that encrypted connections did not honor the 'ioblocktimeout' parameter to end blocking     requests. As a result, an unauthenticated attacker could repeatedly start a sufficient number of encrypted     connections to block all workers, resulting in a denial of service.(CVE-2019-3883)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

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

  - 389-ds-base version before 1.3.5.19 and 1.3.6.7 are     vulnerable to password brute-force attacks during     account lockout due to different return codes returned     on password attempts.(CVE-2017-7551)

  - In 389-ds-base up to version 1.4.1.2, requests are     handled by workers threads. Each sockets will be waited     by the worker for at most 'ioblocktimeout' seconds.
    However this timeout applies only for un-encrypted     requests. Connections using SSL/TLS are not taking this     timeout into account during reads, and may hang     longer.An unauthenticated attacker could repeatedly     create hanging LDAP requests to hang all the workers,     resulting in a Denial of Service.(CVE-2019-3883)

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.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:3401 advisory.

    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.

    The following packages have been upgraded to a later upstream version: 389-ds-base (1.4.1.3). (BZ#1712467)

    Security Fix(es):

    * 389-ds-base: Read permission check bypass via the deref plugin (CVE-2019-14824)

    * 389-ds-base: replication and the Retro Changelog plugin store plaintext password by default     (CVE-2018-10871)

    * 389-ds-base: DoS via hanging secured connections (CVE-2019-3883)

    * 389-ds-base: using dscreate in verbose mode results in information disclosure (CVE-2019-10224)

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

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.1 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has 389-ds-base packages installed that are affected by a vulnerability:

  - In 389-ds-base up to version 1.4.1.2, requests are     handled by workers threads. Each sockets will be waited     by the worker for at most 'ioblocktimeout' seconds.
    However this timeout applies only for un-encrypted     requests. Connections using SSL/TLS are not taking this     timeout into account during reads, and may hang     longer.An unauthenticated attacker could repeatedly     create hanging LDAP requests to hang all the workers,     resulting in a Denial of Service. (CVE-2019-3883)

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 CORE 5.05 / MAIN 5.05, has 389-ds-base packages installed that are affected by a vulnerability:

  - In 389-ds-base up to version 1.4.1.2, requests are     handled by workers threads. Each sockets will be waited     by the worker for at most 'ioblocktimeout' seconds.
    However this timeout applies only for un-encrypted     requests. Connections using SSL/TLS are not taking this     timeout into account during reads, and may hang     longer.An unauthenticated attacker could repeatedly     create hanging LDAP requests to hang all the workers,     resulting in a Denial of Service. (CVE-2019-3883)

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

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.

1693612 :

389-ds-base: DoS via hanging secured connections

It was found that encrypted connections did not honor the 'ioblocktimeout' parameter to end blocking requests. As a result, an unauthenticated attacker could repeatedly start a sufficient number of encrypted connections to block all workers, resulting in a denial of service.(CVE-2019-3883)

Security Fix(es) :

  - 389-ds-base: DoS via hanging secured connections     (CVE-2019-3883)

Bug Fix(es) :

  - Previously, if you were using the PAM plugin and     attempted to bind as a dn that doesn't exist, the server     would crash. This has now been fixed.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2019:1896 advisory.

    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: DoS via hanging secured connections (CVE-2019-3883)

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

    Bug Fix(es):

    * Previously, if you were using the PAM plugin and attempted to bind as a dn that doesn't exist, the     server would crash. This has now been fixed. (BZ#1718184)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Oracle Linux 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2019-1896 advisory.

    - Resolves: Bug 1719720 - CVE-2019-3883 389-ds-base: DoS via hanging secured connections

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

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

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 Moderate. 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: DoS via hanging secured connections (CVE-2019-3883)

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

Bug Fix(es) :

* Previously, if you were using the PAM plugin and attempted to bind as a dn that doesn't exist, the server would crash. This has now been fixed. (BZ# 1718184)

It was found that encrypted connections did not honor the 'ioblocktimeout' parameter to end blocking requests. As a result, an unauthenticated attacker could repeatedly start a sufficient number of encrypted connections to block all workers, resulting in a denial of service. (CVE-2019-3883)

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

  - In 389-ds-base up to version 1.4.1.2, requests are     handled by workers threads. Each sockets will be waited     by the worker for at most 'ioblocktimeout' seconds.
    However this timeout applies only for un-encrypted     requests. Connections using SSL/TLS are not taking this     timeout into account during reads, and may hang     longer.An unauthenticated attacker could repeatedly     create hanging LDAP requests to hang all the workers,     resulting in a Denial of Service.(CVE-2019-3883)

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.

In 389-ds-base up to version 1.4.1.2, requests were handled by worker threads. Each socket had been waited for by the worker for at most 'ioblocktimeout' seconds. However, this timeout applied only to un-encrypted requests. Connections using SSL/TLS were not taking this timeout into account during reads, and may have hung longer. An unauthenticated attacker could have repeatedly created hanging LDAP requests to hang all the workers, resulting in a Denial of Service.

For Debian 8 'Jessie', this problem has been fixed in version 1.3.3.5-4+deb8u6.

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.

ID	Name	Product	Family	Severity
199983	RHEL 6 : 389-ds-base (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
196299	RHEL 6 : 389-ds-base (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	critical
180753	Oracle Linux 8 : 389-ds:1.4 (ELSA-2019-3401)	Nessus	Oracle Linux Local Security Checks	high
174722	Debian DLA-3399-1 : 389-ds-base - LTS security update	Nessus	Debian Local Security Checks	medium
145664	CentOS 8 : 389-ds:1.4 (CESA-2019:3401)	Nessus	CentOS Local Security Checks	high
133004	Amazon Linux AMI : 389-ds-base (ALAS-2020-1334)	Nessus	Amazon Linux Local Security Checks	high
131861	EulerOS 2.0 SP2 : 389-ds-base (EulerOS-SA-2019-2369)	Nessus	Huawei Local Security Checks	critical
130535	RHEL 8 : 389-ds:1.4 (RHSA-2019:3401)	Nessus	Red Hat Local Security Checks	high
129898	NewStart CGSL CORE 5.04 / MAIN 5.04 : 389-ds-base Vulnerability (NS-SA-2019-0181)	Nessus	NewStart CGSL Local Security Checks	high
128703	NewStart CGSL CORE 5.05 / MAIN 5.05 : 389-ds-base Vulnerability (NS-SA-2019-0170)	Nessus	NewStart CGSL Local Security Checks	high
128021	SUSE SLED15 / SLES15 Security Update : 389-ds (SUSE-SU-2019:2155-1)	Nessus	SuSE Local Security Checks	high
127817	Amazon Linux AMI : 389-ds-base (ALAS-2019-1261)	Nessus	Amazon Linux Local Security Checks	high
127723	Scientific Linux Security Update : 389-ds-base on SL7.x x86_64 (20190729)	Nessus	Scientific Linux Local Security Checks	high
127624	RHEL 7 : 389-ds-base (RHSA-2019:1896)	Nessus	Red Hat Local Security Checks	high
127607	Oracle Linux 7 : 389-ds-base (ELSA-2019-1896)	Nessus	Oracle Linux Local Security Checks	high
127473	CentOS 7 : 389-ds-base (CESA-2019:1896)	Nessus	CentOS Local Security Checks	high
127464	Amazon Linux 2 : 389-ds-base (ALAS-2019-1262)	Nessus	Amazon Linux Local Security Checks	high
125489	EulerOS 2.0 SP5 : 389-ds-base (EulerOS-SA-2019-1562)	Nessus	Huawei Local Security Checks	high
125488	EulerOS 2.0 SP3 : 389-ds-base (EulerOS-SA-2019-1561)	Nessus	Huawei Local Security Checks	high
124658	Debian DLA-1779-1 : 389-ds-base security update	Nessus	Debian Local Security Checks	high

Detections

Analytics

CVE-2019-3883

high

Tenable Plugins

critical

critical

high

medium

high

high

critical

high

high

high

high

high

high

high

high

high

high

high

high

high