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Alerts This Week
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RHEL 7: RHSA-2018:0414-01 Important: 389-ds-base DoS and Bypass

red hat
Calendar Grey March 6, 2018
Scroller Redhat
Major revision for 389-ds-base in Red Hat, tackling DoS vulnerabilities and authentication bypass concerns with significant security enhancements.
An update for 389-ds-base is now available for Red Hat Enterprise Linux 7

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):
* 389-ds-base: remote Denial of Service (DoS) via search filters in SetUnicodeStringFromUTF_8 in collate.c (CVE-2018-1054)
* 389-ds-base: Authentication bypass due to lack of size check in slapi_ct_memcmp function in ch_malloc.c (CVE-2017-15135)
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-2017-15135 issue was discovered by Martin Poole (Red Hat).
Bug Fix(es):
* Previously, if an administrator configured an index for an attribute with a specific matching rule in the "nsMatchingRule" parameter, Directory Server did not use the retrieved indexer. As a consequence, Directory Server did not index the values of this attribute with the specified matching rules, and searches with extended filters were unindexed. With this update, Directory Server uses the retrieved indexer that processes the specified matching rule. As a result, searches using extended filters with a specified matching rule are now indexed. (BZ#1536343)

Topics%20covered

Topics Covered

security advisory bug fix DoS Red Hat Enterprise Linux important authentication bypass 389-ds-base

References

https://access.redhat.com/security/cve/CVE-2017-15135 https://access.redhat.com/security/cve/CVE-2018-1054 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Client Optional (v. 7):
Source: 389-ds-base-1.3.6.1-28.el7_4.src.rpm
x86_64: 389-ds-base-1.3.6.1-28.el7_4.x86_64.rpm 389-ds-base-debuginfo-1.3.6.1-28.el7_4.x86_64.rpm 389-ds-base-devel-1.3.6.1-28.el7_4.x86_64.rpm 389-ds-base-libs-1.3.6.1-28.el7_4.x86_64.rpm 389-ds-base-snmp-1.3.6.1-28.el7_4.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
Source: 389-ds-base-1.3.6.1-28.el7_4.src.rpm
x86_64: 389-ds-base-1.3.6.1-28.el7_4.x86_64.rpm 389-ds-base-debuginfo-1.3.6.1-28.el7_4.x86_64.rpm 389-ds-base-devel-1.3.6.1-28.el7_4.x86_64.rpm 389-ds-base-libs-1.3.6.1-28.el7_4.x86_64.rpm 389-ds-base-snmp-1.3.6.1-28.el7_4.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: 389-ds-base-1.3.6.1-28.el7_4.src.rpm
ppc64le: 389-ds-base-1.3.6.1-28.el7_4.ppc64le.rpm 389-ds-base-debuginfo-1.3.6.1-28.el7_4.ppc64le.rpm 389-ds-base-libs-1.3.6.1-28.el7_4.ppc64le.rpm
x86_64: 389-ds-base-1.3.6.1-28.el7_4.x86_64.rpm 389-ds-base-debuginfo-1.3.6.1-28.el7_4.x86_64.rpm 389-ds-base-libs-1.3.6.1-28.el7_4.x86_64.rpm
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):
Source: 389-ds-base-1.3.6.1-28.el7_4.src.rpm
aarch64: 389-ds-base-1.3.6.1-28.el7_4.aarch64.rpm 389-ds-base-debuginfo-1.3.6.1-28.el7_4.aarch64.rpm 389-ds-base-libs-1.3.6.1-28.el7_4.aarch64.rpm


Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2018:0414-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:0414
Issue date: 2018-03-06

Topic

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 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 bug fix DoS Red Hat Enterprise Linux important authentication bypass 389-ds-base

Relevant Releases Architectures

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - ppc64le, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, ppc64le

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, ppc64le

Bugs Fixed

1525628 - CVE-2017-15135 389-ds-base: Authentication bypass due to lack of size check in slapi_ct_memcmp function in ch_malloc.c

1536343 - Indexing of internationalized matching rules is failing [rhel-7.4.z]

1537314 - CVE-2018-1054 389-ds-base: remote Denial of Service (DoS) via search filters in SetUnicodeStringFromUTF_8 in collate.c

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