Vulnerabilities > CVE-2019-3883 - Missing Release of Resource after Effective Lifetime vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
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.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- HTTP DoS An attacker performs flooding at the HTTP level to bring down only a particular web application rather than anything listening on a TCP/IP connection. This denial of service attack requires substantially fewer packets to be sent which makes DoS harder to detect. This is an equivalent of SYN flood in HTTP. The idea is to keep the HTTP session alive indefinitely and then repeat that hundreds of times. This attack targets resource depletion weaknesses in web server software. The web server will wait to attacker's responses on the initiated HTTP sessions while the connection threads are being exhausted.
Nessus
NASL family Debian Local Security Checks NASL id DEBIAN_DLA-1779.NASL description 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 last seen 2020-06-01 modified 2020-06-02 plugin id 124658 published 2019-05-07 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/124658 title Debian DLA-1779-1 : 389-ds-base security update NASL family Scientific Linux Local Security Checks NASL id SL_20190729_389_DS_BASE_ON_SL7_X.NASL description 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 last seen 2020-03-18 modified 2019-08-12 plugin id 127723 published 2019-08-12 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/127723 title Scientific Linux Security Update : 389-ds-base on SL7.x x86_64 (20190729) NASL family Amazon Linux Local Security Checks NASL id ALA_ALAS-2020-1334.NASL description 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 last seen 2020-06-01 modified 2020-06-02 plugin id 133004 published 2020-01-17 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/133004 title Amazon Linux AMI : 389-ds-base (ALAS-2020-1334) NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2019-1896.NASL description From Red Hat Security Advisory 2019:1896 : 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 last seen 2020-06-01 modified 2020-06-02 plugin id 127607 published 2019-08-12 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/127607 title Oracle Linux 7 : 389-ds-base (ELSA-2019-1896) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2019-1896.NASL description 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 last seen 2020-06-01 modified 2020-06-02 plugin id 127624 published 2019-08-12 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/127624 title RHEL 7 : 389-ds-base (RHSA-2019:1896) NASL family SuSE Local Security Checks NASL id SUSE_SU-2019-2155-1.NASL description 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. last seen 2020-06-01 modified 2020-06-02 plugin id 128021 published 2019-08-20 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/128021 title SUSE SLED15 / SLES15 Security Update : 389-ds (SUSE-SU-2019:2155-1) NASL family CentOS Local Security Checks NASL id CENTOS_RHSA-2019-1896.NASL description 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 last seen 2020-06-01 modified 2020-06-02 plugin id 127473 published 2019-08-12 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/127473 title CentOS 7 : 389-ds-base (CESA-2019:1896) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-2369.NASL description 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 last seen 2020-05-08 modified 2019-12-10 plugin id 131861 published 2019-12-10 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/131861 title EulerOS 2.0 SP2 : 389-ds-base (EulerOS-SA-2019-2369) NASL family NewStart CGSL Local Security Checks NASL id NEWSTART_CGSL_NS-SA-2019-0170_389-DS-BASE.NASL description 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 last seen 2020-06-01 modified 2020-06-02 plugin id 128703 published 2019-09-11 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/128703 title NewStart CGSL CORE 5.05 / MAIN 5.05 : 389-ds-base Vulnerability (NS-SA-2019-0170) NASL family NewStart CGSL Local Security Checks NASL id NEWSTART_CGSL_NS-SA-2019-0181_389-DS-BASE.NASL description 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 last seen 2020-06-01 modified 2020-06-02 plugin id 129898 published 2019-10-15 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/129898 title NewStart CGSL CORE 5.04 / MAIN 5.04 : 389-ds-base Vulnerability (NS-SA-2019-0181) NASL family Amazon Linux Local Security Checks NASL id AL2_ALAS-2019-1262.NASL description It was found that encrypted connections did not honor the last seen 2020-06-01 modified 2020-06-02 plugin id 127464 published 2019-08-12 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/127464 title Amazon Linux 2 : 389-ds-base (ALAS-2019-1262) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-1562.NASL description 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 last seen 2020-05-06 modified 2019-05-29 plugin id 125489 published 2019-05-29 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/125489 title EulerOS 2.0 SP5 : 389-ds-base (EulerOS-SA-2019-1562) NASL family Amazon Linux Local Security Checks NASL id ALA_ALAS-2019-1261.NASL description 1693612 : 389-ds-base: DoS via hanging secured connections It was found that encrypted connections did not honor the last seen 2020-06-01 modified 2020-06-02 plugin id 127817 published 2019-08-13 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/127817 title Amazon Linux AMI : 389-ds-base (ALAS-2019-1261) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2019-3401.NASL description An update for the 389-ds:1.4 module is now available for Red Hat Enterprise Linux 8. 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. 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. last seen 2020-05-23 modified 2019-11-06 plugin id 130535 published 2019-11-06 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/130535 title RHEL 8 : 389-ds:1.4 (RHSA-2019:3401) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-1561.NASL description 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 last seen 2020-05-06 modified 2019-05-29 plugin id 125488 published 2019-05-29 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/125488 title EulerOS 2.0 SP3 : 389-ds-base (EulerOS-SA-2019-1561)
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References
- https://access.redhat.com/errata/RHSA-2019:1896
- https://access.redhat.com/errata/RHSA-2019:1896
- https://access.redhat.com/errata/RHSA-2019:3401
- https://access.redhat.com/errata/RHSA-2019:3401
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3883
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3883
- https://lists.debian.org/debian-lts-announce/2019/05/msg00008.html
- https://lists.debian.org/debian-lts-announce/2019/05/msg00008.html
- https://lists.debian.org/debian-lts-announce/2023/04/msg00026.html
- https://lists.debian.org/debian-lts-announce/2023/04/msg00026.html
- https://pagure.io/389-ds-base/issue/50329
- https://pagure.io/389-ds-base/issue/50329
- https://pagure.io/389-ds-base/pull-request/50331
- https://pagure.io/389-ds-base/pull-request/50331