Vulnerabilities > CVE-2018-14624 - Improper Input Validation vulnerability in multiple products

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
HIGH
network
low complexity
fedoraproject
redhat
debian
CWE-20
nessus

Summary

A vulnerability was discovered in 389-ds-base through versions 1.3.7.10, 1.3.8.8 and 1.4.0.16. 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.

Vulnerable Configurations

Part Description Count
Application
Fedoraproject
188
OS
Redhat
7
OS
Debian
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Nessus

  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2018-2757.NASL
    descriptionAn 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: race condition on reference counter leads to DoS using persistent search (CVE-2018-10850) * 389-ds-base: ldapsearch with server side sort allows users to cause a crash (CVE-2018-10935) * 389-ds-base: Server crash through modify command with large DN (CVE-2018-14624) * 389-ds-base: Crash in delete_passwdPolicy when persistent search connections are terminated unexpectedly (CVE-2018-14638) 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-2018-10850 issue was discovered by Thierry Bordaz (Red Hat) and the CVE-2018-14638 issue was discovered by Viktor Ashirov (Red Hat). Bug Fix(es) : * Previously, the nucn-stans framework was enabled by default in Directory Server, but the framework is not stable. As a consequence, deadlocks and file descriptor leaks could occur. This update changes the default value of the nsslapd-enable-nunc-stans parameter to
    last seen2020-06-01
    modified2020-06-02
    plugin id117774
    published2018-09-27
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/117774
    titleRHEL 7 : 389-ds-base (RHSA-2018:2757)
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2018-1357.NASL
    descriptionAccording to the versions of the 389-ds-base packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - race condition on reference counter leads to DoS using persistent search (CVE-2018-10850) - Server crash through modify command with large DN (CVE-2018-14624) 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.
    last seen2020-05-06
    modified2018-11-06
    plugin id118740
    published2018-11-06
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/118740
    titleEulerOS 2.0 SP2 : 389-ds-base (EulerOS-SA-2018-1357)
  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20180925_389_DS_BASE_ON_SL7_X.NASL
    descriptionSecurity Fix(es) : - 389-ds-base: race condition on reference counter leads to DoS using persistent search (CVE-2018-10850) - 389-ds-base: ldapsearch with server side sort allows users to cause a crash (CVE-2018-10935) - 389-ds-base: Server crash through modify command with large DN (CVE-2018-14624) - 389-ds-base: Crash in delete_passwdPolicy when persistent search connections are terminated unexpectedly (CVE-2018-14638) Bug Fix(es) : - Previously, the nucn-stans framework was enabled by default in Directory Server, but the framework is not stable. As a consequence, deadlocks and file descriptor leaks could occur. This update changes the default value of the nsslapd-enable-nunc-stans parameter to
    last seen2020-03-18
    modified2018-09-27
    plugin id117785
    published2018-09-27
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/117785
    titleScientific Linux Security Update : 389-ds-base on SL7.x x86_64 (20180925)
  • NASL familyAmazon Linux Local Security Checks
    NASL idALA_ALAS-2018-1094.NASL
    descriptionA 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)
    last seen2020-06-01
    modified2020-06-02
    plugin id118361
    published2018-10-25
    reporterThis script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/118361
    titleAmazon Linux AMI : 389-ds-base (ALAS-2018-1094)
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2018-2757.NASL
    descriptionFrom Red Hat Security Advisory 2018:2757 : 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: race condition on reference counter leads to DoS using persistent search (CVE-2018-10850) * 389-ds-base: ldapsearch with server side sort allows users to cause a crash (CVE-2018-10935) * 389-ds-base: Server crash through modify command with large DN (CVE-2018-14624) * 389-ds-base: Crash in delete_passwdPolicy when persistent search connections are terminated unexpectedly (CVE-2018-14638) 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-2018-10850 issue was discovered by Thierry Bordaz (Red Hat) and the CVE-2018-14638 issue was discovered by Viktor Ashirov (Red Hat). Bug Fix(es) : * Previously, the nucn-stans framework was enabled by default in Directory Server, but the framework is not stable. As a consequence, deadlocks and file descriptor leaks could occur. This update changes the default value of the nsslapd-enable-nunc-stans parameter to
    last seen2020-06-01
    modified2020-06-02
    plugin id117766
    published2018-09-27
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/117766
    titleOracle Linux 7 : 389-ds-base (ELSA-2018-2757)
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2019-1397.NASL
    descriptionThis update for 389-ds fixes the following issues : The following security vulnerabilities were addressed : - CVE-2018-10850: Fixed a race condition on reference counter that would lead to a denial of service using persistent search (bsc#1096368) - CVE-2017-15134: Fixed a remote denial of service via search filters in slapi_filter_sprintf in slapd/util.c (bsc#1076530) - CVE-2017-15135: Fixed authentication bypass due to lack of size check in slapi_ct_memcmp function in ch_malloc.c (bsc#1076530) - CVE-2018-10935: Fixed an issue that allowed users to cause a crash via ldapsearch with server side sorts (bsc#1105606) - CVE-2018-14624: The lock controlling the error log was not correctly used when re-opening the log file in log__error_emergency(), allowing an attacker to send a flood of modifications to a very large DN, which could have caused slapd to crash (bsc#1106699). This update was imported from the SUSE:SLE-15:Update update project.
    last seen2020-06-01
    modified2020-06-02
    plugin id125210
    published2019-05-16
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/125210
    titleopenSUSE Security Update : 389-ds (openSUSE-2019-1397)
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2018-1365.NASL
    descriptionAccording to the versions of the 389-ds-base packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - race condition on reference counter leads to DoS using persistent search (CVE-2018-10850) - ldapsearch with server side sort allows users to cause a crash (CVE-2018-10935) - Server crash through modify command with large DN (CVE-2018-14624) - Crash in delete_passwdPolicy when persistent search connections are terminated unexpectedly (CVE-2018-14638) 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.
    last seen2020-05-06
    modified2018-11-07
    plugin id118759
    published2018-11-07
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/118759
    titleEulerOS 2.0 SP3 : 389-ds-base (EulerOS-SA-2018-1365)
  • NASL familyNewStart CGSL Local Security Checks
    NASL idNEWSTART_CGSL_NS-SA-2019-0038_389-DS-BASE.NASL
    descriptionThe remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has 389-ds-base packages installed that are affected by multiple vulnerabilities: - 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) - It was found that 389-ds-base did not properly handle long search filters with characters needing escapes, possibly leading to buffer overflows. 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-2018-1089) - 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 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) Note that Nessus has not tested for this issue but has instead relied only on the application
    last seen2020-06-01
    modified2020-06-02
    plugin id127210
    published2019-08-12
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/127210
    titleNewStart CGSL CORE 5.04 / MAIN 5.04 : 389-ds-base Multiple Vulnerabilities (NS-SA-2019-0038)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2019-1207-1.NASL
    descriptionThis update for 389-ds fixes the following issues : The following security vulnerabilities were addressed : CVE-2018-10850: Fixed a race condition on reference counter that would lead to a denial of service using persistent search (bsc#1096368) CVE-2017-15134: Fixed a remote denial of service via search filters in slapi_filter_sprintf in slapd/util.c (bsc#1076530) CVE-2017-15135: Fixed authentication bypass due to lack of size check in slapi_ct_memcmp function in ch_malloc.c (bsc#1076530) CVE-2018-10935: Fixed an issue that allowed users to cause a crash via ldapsearch with server side sorts (bsc#1105606) CVE-2018-14624: The lock controlling the error log was not correctly used when re-opening the log file in log__error_emergency(), allowing an attacker to send a flood of modifications to a very large DN, which could have caused slapd to crash (bsc#1106699). 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 seen2020-06-01
    modified2020-06-02
    plugin id124855
    published2019-05-13
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/124855
    titleSUSE SLED15 / SLES15 Security Update : 389-ds (SUSE-SU-2019:1207-1)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-1526.NASL
    descriptionIt was discovered that the emergency logging system in 389-ds-base (the 389 Directory Server) is affected by a race condition caused by the invalidation of the concurrently used log file file descriptor without proper locking. This issue might be triggered by remote attackers to cause DoS (crash) and any other undefined behavior. For Debian 8
    last seen2020-06-01
    modified2020-06-02
    plugin id117836
    published2018-10-01
    reporterThis script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/117836
    titleDebian DLA-1526-1 : 389-ds-base security update
  • NASL familyAmazon Linux Local Security Checks
    NASL idAL2_ALAS-2018-1094.NASL
    descriptionA 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)
    last seen2020-06-01
    modified2020-06-02
    plugin id118401
    published2018-10-26
    reporterThis script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/118401
    titleAmazon Linux 2 : 389-ds-base (ALAS-2018-1094)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2019-1207-2.NASL
    descriptionThis update for 389-ds fixes the following issues : The following security vulnerabilities were addressed : CVE-2018-10850: Fixed a race condition on reference counter that would lead to a denial of service using persistent search (bsc#1096368) CVE-2017-15134: Fixed a remote denial of service via search filters in slapi_filter_sprintf in slapd/util.c (bsc#1076530) CVE-2017-15135: Fixed authentication bypass due to lack of size check in slapi_ct_memcmp function in ch_malloc.c (bsc#1076530) CVE-2018-10935: Fixed an issue that allowed users to cause a crash via ldapsearch with server side sorts (bsc#1105606) CVE-2018-14624: The lock controlling the error log was not correctly used when re-opening the log file in log__error_emergency(), allowing an attacker to send a flood of modifications to a very large DN, which could have caused slapd to crash (bsc#1106699). 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 seen2020-06-01
    modified2020-06-02
    plugin id126439
    published2019-07-02
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/126439
    titleSUSE SLED15 / SLES15 Security Update : 389-ds (SUSE-SU-2019:1207-2)
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2018-2757.NASL
    descriptionAn 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: race condition on reference counter leads to DoS using persistent search (CVE-2018-10850) * 389-ds-base: ldapsearch with server side sort allows users to cause a crash (CVE-2018-10935) * 389-ds-base: Server crash through modify command with large DN (CVE-2018-14624) * 389-ds-base: Crash in delete_passwdPolicy when persistent search connections are terminated unexpectedly (CVE-2018-14638) 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-2018-10850 issue was discovered by Thierry Bordaz (Red Hat) and the CVE-2018-14638 issue was discovered by Viktor Ashirov (Red Hat). Bug Fix(es) : * Previously, the nucn-stans framework was enabled by default in Directory Server, but the framework is not stable. As a consequence, deadlocks and file descriptor leaks could occur. This update changes the default value of the nsslapd-enable-nunc-stans parameter to
    last seen2020-06-01
    modified2020-06-02
    plugin id117830
    published2018-10-01
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/117830
    titleCentOS 7 : 389-ds-base (CESA-2018:2757)

Redhat

advisories
rhsa
idRHSA-2018:2757
rpms
  • 389-ds-base-0:1.3.7.5-28.el7_5
  • 389-ds-base-debuginfo-0:1.3.7.5-28.el7_5
  • 389-ds-base-devel-0:1.3.7.5-28.el7_5
  • 389-ds-base-libs-0:1.3.7.5-28.el7_5
  • 389-ds-base-snmp-0:1.3.7.5-28.el7_5