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Red Hat Enterprise Linux 6 and 7: RHSA-2016-0009-01 Moderate DoS Risk

red hat
Calendar Grey January 8, 2016
Scroller Redhat
Red Hat introduces a significant libldb enhancement focused on resolving two critical vulnerabilities, thereby reinforcing security and enhancing system reliability.
Updated libldb packages that fix two security issues are now available for Red Hat Enterprise Linux 6 and 7

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, refer to:

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

Summary

The libldb packages provide an extensible library that implements an LDAP-like API to access remote LDAP servers, or use local TDB databases.
A denial of service flaw was found in the ldb_wildcard_compare() function of libldb. A remote attacker could send a specially crafted packet that, when processed by an application using libldb (for example the AD LDAP server in Samba), would cause that application to consume an excessive amount of memory and crash. (CVE-2015-3223)
A memory-read flaw was found in the way the libldb library processed LDB DN records with a null byte. An authenticated, remote attacker could use this flaw to read heap-memory pages from the server. (CVE-2015-5330)
Red Hat would like to thank the Samba project for reporting these issues. Upstream acknowledges Thilo Uttendorfer as the original reporter of CVE-2015-3223, and Douglas Bagnall as the original reporter of CVE-2015-5330.
All libldb users are advised to upgrade to these updated packages, which contain backported patches to correct these issues.

Topics%20covered

Topics Covered

security advisory moderate denial of service Red Hat Enterprise libldb memory-read

References

https://access.redhat.com/security/cve/CVE-2015-3223 https://access.redhat.com/security/cve/CVE-2015-5330 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: libldb-1.1.13-3.el6_7.1.src.rpm
i386: libldb-1.1.13-3.el6_7.1.i686.rpm libldb-debuginfo-1.1.13-3.el6_7.1.i686.rpm libldb-devel-1.1.13-3.el6_7.1.i686.rpm pyldb-1.1.13-3.el6_7.1.i686.rpm
x86_64: libldb-1.1.13-3.el6_7.1.i686.rpm libldb-1.1.13-3.el6_7.1.x86_64.rpm libldb-debuginfo-1.1.13-3.el6_7.1.i686.rpm libldb-debuginfo-1.1.13-3.el6_7.1.x86_64.rpm libldb-devel-1.1.13-3.el6_7.1.i686.rpm libldb-devel-1.1.13-3.el6_7.1.x86_64.rpm pyldb-1.1.13-3.el6_7.1.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
i386: ldb-tools-1.1.13-3.el6_7.1.i686.rpm libldb-debuginfo-1.1.13-3.el6_7.1.i686.rpm pyldb-devel-1.1.13-3.el6_7.1.i686.rpm
x86_64: ldb-tools-1.1.13-3.el6_7.1.x86_64.rpm libldb-debuginfo-1.1.13-3.el6_7.1.x86_64.rpm pyldb-devel-1.1.13-3.el6_7.1.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source: libldb-1.1.13-3.el6_7.1.src.rpm
x86_64: libldb-1.1.13-3.el6_7.1.i686.rpm libldb-1.1.13-3.el6_7.1.x86_64.rpm libldb-debuginfo-1.1.13-3.el6_7.1.i686.rpm libldb-debuginfo-1.1.13-3.el6_7.1.x86_64.rpm libldb-devel-1.1.13-3.el6_7.1.i686.rpm libldb-devel-1.1.13-3.el6_7.1.x86_64.rpm pyldb-1.1.13-3.el6_7.1.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
x86_64: ldb-tools-1.1.13-3.el6_7.1.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2016:0009-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2016:0009.html
Issue date: 2016-01-07

Topic

Updated libldb packages that fix two security issues are now available forRed Hat Enterprise Linux 6 and 7.Red Hat Product Security has rated this update as having Moderate securityimpact. Common Vulnerability Scoring System (CVSS) base scores, which givedetailed severity ratings, are available for each vulnerability from theCVE links in the References section.

Topics%20covered

Topics Covered

security advisory moderate denial of service Red Hat Enterprise libldb memory-read

Relevant Releases Architectures

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

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

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

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

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

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

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

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

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

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

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64

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

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

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

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

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

Bugs Fixed

1281326 - CVE-2015-5330 samba, libldb: remote memory read in the Samba LDAP server

1290287 - CVE-2015-3223 libldb: Remote DoS in Samba (AD) LDAP server

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