ID CVE-2012-0833
Summary The acllas__handle_group_entry function in servers/plugins/acl/acllas.c in 389 Directory Server before 1.2.10 does not properly handled access control instructions (ACIs) that use certificate groups, which allows remote authenticated LDAP users with a certificate group to cause a denial of service (infinite loop and CPU consumption) by binding to the server.
References
Vulnerable Configurations
  • Fedora Project 389 Directory Server 1.2.7 Alpha 3
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.7:alpha3
  • Fedora Project 389 Directory Server 1.2.6
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.6
  • Fedora Project 389 Directory Server 1.2.6 Release Candidate 6
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.6:rc6
  • Fedora Project 389 Directory Server 1.2.6 Release Candidate 3
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.6:rc3
  • Fedora Project 389 Directory Server 1.2.6.1
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.6.1
  • Fedora Project 389 Directory Server 1.2.6 Release Candidate 7
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.6:rc7
  • Fedora Project 389 Directory Server 1.2.6 a4
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.6:a4
  • Fedora Project 389 Directory Server 1.2.6 a3
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.6:a3
  • Fedora Project 389 Directory Server 1.2.6 Release Candidate 2
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.6:rc2
  • Fedora Project 389 Directory Server 1.2.6 Release Candidate 1
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.6:rc1
  • Fedora Project 389 Directory Server 1.2.5 Release Candidate 4
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.5:rc4
  • Fedora Project 389 Directory Server 1.2.5 Release Candidate 3
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.5:rc3
  • Fedora Project 389 Directory Server 1.2.6 a2
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.6:a2
  • Fedora Project 389 Directory Server 1.2.5
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.5
  • Fedora Project 389 Directory Server 1.2.2
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.2
  • Fedora Project 389 Directory Server 1.2.3
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.3
  • Fedora Project 389 Directory Server 1.2.5 Release Candidate 1
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.5:rc1
  • Fedora Project 389 Directory Server 1.2.5 Release Candidate 2
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.5:rc2
  • Fedora Project 389 Directory Server 1.2.8 Alpha 1
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.8:alpha1
  • Fedora Project 389 Directory Server 1.2.7.5
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.7.5
  • Fedora Project 389 Directory Server 1.2.1
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.1
  • Fedora Project 389 Directory Server 1.2.8 Release Candidate 1
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.8:rc1
  • Fedora Project 389 Directory Server 1.2.8 Alpha 2
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.8:alpha2
  • Fedora Project 389 Directory Server 1.2.8 Alpha 3
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.8:alpha3
  • Fedora Project 389 Directory Server 1.2.8.1
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.8.1
  • Fedora Project 389 Directory Server 1.2.8 Release Candidate 2
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.8:rc2
  • Fedora Project 389 Directory Server 1.2.8.2
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.8.2
  • Fedora Project 389 Directory Server 1.2.8.3
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.8.3
  • Fedora Project 389 Directory Server 1.2.9.9
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.9.9
  • Fedora Project 389 Directory Server 1.2.10 alpha8
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.10:alpha8
  • Fedora Project 389 Directory Server 1.2.10 release candidate 1
    cpe:2.3:a:fedoraproject:389_directory_server:1.2.10:rc1
CVSS
Base: 2.3 (as of 03-07-2012 - 14:04)
Impact:
Exploitability:
CWE CWE-264
CAPEC
  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Blue Boxing
    This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
  • Target Programs with Elevated Privileges
    This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.
  • Manipulating Input to File System Calls
    An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.
Access
VectorComplexityAuthentication
ADJACENT_NETWORK MEDIUM SINGLE_INSTANCE
Impact
ConfidentialityIntegrityAvailability
NONE NONE PARTIAL
nessus via4
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2012-0813.NASL
    description Updated 389-ds-base packages that fix one security issue, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. The 389 Directory Server is an LDAPv3 compliant server. The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration. A flaw was found in the way the 389 Directory Server daemon (ns-slapd) handled access control instructions (ACIs) using certificate groups. If an LDAP user that had a certificate group defined attempted to bind to the directory server, it would cause ns-slapd to enter an infinite loop and consume an excessive amount of CPU time. (CVE-2012-0833) Red Hat would like to thank Graham Leggett for reporting this issue. These updated 389-ds-base packages also include numerous bug fixes and enhancements. Space precludes documenting all of these changes in this advisory. Users are directed to the Red Hat Enterprise Linux 6.3 Technical Notes for information on the most significant of these changes. Users are advised to upgrade to these updated 389-ds-base packages, which resolve these issues and add these enhancements. After installing this update, the 389 server service will be restarted automatically.
    last seen 2019-02-21
    modified 2018-12-20
    plugin id 59588
    published 2012-06-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=59588
    title RHEL 6 : 389-ds-base (RHSA-2012:0813)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2012-0813.NASL
    description Updated 389-ds-base packages that fix one security issue, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. The 389 Directory Server is an LDAPv3 compliant server. The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration. A flaw was found in the way the 389 Directory Server daemon (ns-slapd) handled access control instructions (ACIs) using certificate groups. If an LDAP user that had a certificate group defined attempted to bind to the directory server, it would cause ns-slapd to enter an infinite loop and consume an excessive amount of CPU time. (CVE-2012-0833) Red Hat would like to thank Graham Leggett for reporting this issue. These updated 389-ds-base packages also include numerous bug fixes and enhancements. Space precludes documenting all of these changes in this advisory. Users are directed to the Red Hat Enterprise Linux 6.3 Technical Notes for information on the most significant of these changes. Users are advised to upgrade to these updated 389-ds-base packages, which resolve these issues and add these enhancements. After installing this update, the 389 server service will be restarted automatically.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 59923
    published 2012-07-11
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=59923
    title CentOS 6 : 389-ds-base (CESA-2012:0813)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2013-0549.NASL
    description Updated Red Hat Directory Server and related packages that fix one security issue and multiple bugs are now available for Red Hat Directory Server 8.2. The Red Hat Security Response Team has rated this update as having low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. The redhat-ds-base packages provide Red Hat Directory Server, which is an LDAPv3 compliant server. The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration. A flaw was found in the way the 389 Directory Server daemon (ns-slapd) handled access control instructions (ACIs) using certificate groups. If an LDAP user that had a certificate group defined attempted to bind to the directory server, it would cause ns-slapd to enter an infinite loop and consume an excessive amount of CPU time. (CVE-2012-0833) Red Hat would like to thank Graham Leggett for reporting this issue. This update also fixes the following bugs : * Search with a complex filter that included a range search filter was slow. (BZ#853004) * If the server was restarted, or there was some type of connection failure, it was possible that users were no longer able to log into the console. Manual action is required to apply this fix: You must add an aci to each 'cn=Server Group' entry in 'o=netscaperoot', that allows anonymous/all users read/search rights. (BZ#856089) * With replication enabled, trying to replace an existing value, where the new value only differs in case (for example, changing 'cn: foo' to 'cn: FOO'), resulted in the operation failing with an error 20. (BZ#891866) All users of Red Hat Directory Server 8.2 should upgrade to these updated packages, which resolve these issues.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 78949
    published 2014-11-08
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=78949
    title RHEL 5 : Red Hat Directory Server (RHSA-2013:0549)
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20120620_389_DS_BASE_ON_SL6_X_LOW.NASL
    description The 389 Directory Server is an LDAPv3 compliant server. The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration. A flaw was found in the way the 389 Directory Server daemon (ns-slapd) handled access control instructions (ACIs) using certificate groups. If an LDAP user that had a certificate group defined attempted to bind to the directory server, it would cause ns-slapd to enter an infinite loop and consume an excessive amount of CPU time. (CVE-2012-0833) These updated 389-ds-base packages also include numerous bug fixes and enhancements. Users are advised to upgrade to these updated 389-ds-base packages, which resolve these issues and add these enhancements. After installing this update, the 389 server service will be restarted automatically.
    last seen 2019-02-21
    modified 2018-12-31
    plugin id 61335
    published 2012-08-01
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=61335
    title Scientific Linux Security Update : 389-ds-base on SL6.x i386/x86_64
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2012-0813.NASL
    description From Red Hat Security Advisory 2012:0813 : Updated 389-ds-base packages that fix one security issue, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. The 389 Directory Server is an LDAPv3 compliant server. The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration. A flaw was found in the way the 389 Directory Server daemon (ns-slapd) handled access control instructions (ACIs) using certificate groups. If an LDAP user that had a certificate group defined attempted to bind to the directory server, it would cause ns-slapd to enter an infinite loop and consume an excessive amount of CPU time. (CVE-2012-0833) Red Hat would like to thank Graham Leggett for reporting this issue. These updated 389-ds-base packages also include numerous bug fixes and enhancements. Space precludes documenting all of these changes in this advisory. Users are directed to the Red Hat Enterprise Linux 6.3 Technical Notes for information on the most significant of these changes. Users are advised to upgrade to these updated 389-ds-base packages, which resolve these issues and add these enhancements. After installing this update, the 389 server service will be restarted automatically.
    last seen 2019-02-21
    modified 2018-07-18
    plugin id 68552
    published 2013-07-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=68552
    title Oracle Linux 6 : 389-ds-base (ELSA-2012-0813)
  • NASL family FreeBSD Local Security Checks
    NASL id FREEBSD_PKG_65539C54251711E2B9D620CF30E32F6D.NASL
    description Apache HTTP SERVER PROJECT reports:low: XSS in mod_negotiation when untrusted uploads are supported CVE-2012-2687 Possible XSS for sites which use mod_negotiation and allow untrusted uploads to locations which have MultiViews enabled. low: insecure LD_LIBRARY_PATH handling CVE-2012-0883 This issue was already fixed in port version 2.2.22_5
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 62806
    published 2012-11-05
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=62806
    title FreeBSD : apache22 -- several vulnerabilities (65539c54-2517-11e2-b9d6-20cf30e32f6d)
redhat via4
advisories
bugzilla
id 824014
title DS Shuts down intermittently
oval
AND
  • OR
    • comment Red Hat Enterprise Linux 6 Client is installed
      oval oval:com.redhat.rhba:tst:20111656001
    • comment Red Hat Enterprise Linux 6 Server is installed
      oval oval:com.redhat.rhba:tst:20111656002
    • comment Red Hat Enterprise Linux 6 Workstation is installed
      oval oval:com.redhat.rhba:tst:20111656003
    • comment Red Hat Enterprise Linux 6 ComputeNode is installed
      oval oval:com.redhat.rhba:tst:20111656004
  • OR
    • AND
      • comment 389-ds-base is earlier than 0:1.2.10.2-15.el6
        oval oval:com.redhat.rhsa:tst:20120813005
      • comment 389-ds-base is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhba:tst:20151554010
    • AND
      • comment 389-ds-base-devel is earlier than 0:1.2.10.2-15.el6
        oval oval:com.redhat.rhsa:tst:20120813007
      • comment 389-ds-base-devel is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhba:tst:20151554006
    • AND
      • comment 389-ds-base-libs is earlier than 0:1.2.10.2-15.el6
        oval oval:com.redhat.rhsa:tst:20120813009
      • comment 389-ds-base-libs is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhba:tst:20151554008
rhsa
id RHSA-2012:0813
released 2012-06-20
severity Low
title RHSA-2012:0813: 389-ds-base security, bug fix, and enhancement update (Low)
rpms
  • 389-ds-base-0:1.2.10.2-15.el6
  • 389-ds-base-devel-0:1.2.10.2-15.el6
  • 389-ds-base-libs-0:1.2.10.2-15.el6
refmap via4
confirm
secunia
  • 48035
  • 49562
Last major update 17-07-2012 - 00:00
Published 03-07-2012 - 12:40
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