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Red Hat Enterprise Linux 6 RHSA-2017-0893-01 Important: 389-ds-base DoS

red hat
Calendar Grey April 11, 2017
Scroller Redhat
Urgent security notice for 389-ds-base affecting Red Hat Enterprise Linux 6, highlighting potential remote denial of service vulnerabilities.
An update for 389-ds-base is now available for Red Hat Enterprise Linux 6

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing this update, the 389 server service will be restarted automatically.

Summary

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):
* An invalid pointer dereference flaw was found in the way 389-ds-base handled LDAP bind requests. A remote unauthenticated attacker could use this flaw to make ns-slapd crash via a specially crafted LDAP bind request, resulting in denial of service. (CVE-2017-2668)
Red Hat would like to thank Joachim Jabs (F24) for reporting this issue.
Bug Fix(es):
* Previously, the "deref" plug-in failed to dereference attributes that use distinguished name (DN) syntax, such as "uniqueMember". With this patch, the "deref" plug-in can dereference such attributes and additionally "Name and Optional UID" syntax. As a result, the "deref" plug-in now supports any syntax. (BZ#1435365)

Topics%20covered

Topics Covered

security advisory denial of service remote exploit red hat software update important 389-ds-base

References

https://access.redhat.com/security/cve/CVE-2017-2668 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Desktop Optional (v. 6):
Source: 389-ds-base-1.2.11.15-91.el6_9.src.rpm
i386: 389-ds-base-1.2.11.15-91.el6_9.i686.rpm 389-ds-base-debuginfo-1.2.11.15-91.el6_9.i686.rpm 389-ds-base-devel-1.2.11.15-91.el6_9.i686.rpm 389-ds-base-libs-1.2.11.15-91.el6_9.i686.rpm
x86_64: 389-ds-base-1.2.11.15-91.el6_9.x86_64.rpm 389-ds-base-debuginfo-1.2.11.15-91.el6_9.i686.rpm 389-ds-base-debuginfo-1.2.11.15-91.el6_9.x86_64.rpm 389-ds-base-devel-1.2.11.15-91.el6_9.i686.rpm 389-ds-base-devel-1.2.11.15-91.el6_9.x86_64.rpm 389-ds-base-libs-1.2.11.15-91.el6_9.i686.rpm 389-ds-base-libs-1.2.11.15-91.el6_9.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source: 389-ds-base-1.2.11.15-91.el6_9.src.rpm
x86_64: 389-ds-base-1.2.11.15-91.el6_9.x86_64.rpm 389-ds-base-debuginfo-1.2.11.15-91.el6_9.i686.rpm 389-ds-base-debuginfo-1.2.11.15-91.el6_9.x86_64.rpm 389-ds-base-devel-1.2.11.15-91.el6_9.i686.rpm 389-ds-base-devel-1.2.11.15-91.el6_9.x86_64.rpm 389-ds-base-libs-1.2.11.15-91.el6_9.i686.rpm 389-ds-base-libs-1.2.11.15-91.el6_9.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source: 389-ds-base-1.2.11.15-91.el6_9.src.rpm
i386: 389-ds-base-1.2.11.15-91.el6_9.i686.rpm 389-ds-base-debuginfo-1.2.11.15-91.el6_9.i686.rpm 389-ds-base-libs-1.2.11.15-91.el6_9.i686.rpm
x86_64:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2017:0893-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:0893
Issue date: 2017-04-11

Topic

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 impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory denial of service remote exploit red hat software update important 389-ds-base

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

Bugs Fixed

1435365 - Unable to dereference unqiemember attribute because it is dn [#UID] not dn syntax

1436575 - CVE-2017-2668 389-ds-base: Remote crash via crafted LDAP messages

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