RedHat: RHSA-2012-1139:01 Important: bind-dyndb-ldap security update
Summary
The dynamic LDAP back end is a plug-in for BIND that provides back-end
capabilities to LDAP databases. It features support for dynamic updates and
internal caching that help to reduce the load on LDAP servers.
A flaw was found in the way bind-dyndb-ldap performed the escaping of names
from DNS requests for use in LDAP queries. A remote attacker able to send
DNS queries to a named server that is configured to use bind-dyndb-ldap
could use this flaw to cause named to exit unexpectedly with an assertion
failure. (CVE-2012-3429)
Red Hat would like to thank Sigbjorn Lie of Atea Norway for reporting this
issue.
All bind-dyndb-ldap users should upgrade to this updated package, which
contains a backported patch to correct this issue. For the update to take
effect, the named service must be restarted.
Summary
Solution
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258
References
https://www.redhat.com/security/data/cve/CVE-2012-3429.html https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux Server (v. 6):
Source:
i386:
bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1.i686.rpm
bind-dyndb-ldap-debuginfo-1.1.0-0.9.b1.el6_3.1.i686.rpm
ppc64:
bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1.ppc64.rpm
bind-dyndb-ldap-debuginfo-1.1.0-0.9.b1.el6_3.1.ppc64.rpm
s390x:
bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1.s390x.rpm
bind-dyndb-ldap-debuginfo-1.1.0-0.9.b1.el6_3.1.s390x.rpm
x86_64:
bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1.x86_64.rpm
bind-dyndb-ldap-debuginfo-1.1.0-0.9.b1.el6_3.1.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
i386:
bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1.i686.rpm
bind-dyndb-ldap-debuginfo-1.1.0-0.9.b1.el6_3.1.i686.rpm
x86_64:
bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1.x86_64.rpm
bind-dyndb-ldap-debuginfo-1.1.0-0.9.b1.el6_3.1.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package
Topic
An updated bind-dyndb-ldap package that fixes one security issue is nowavailable for Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as havingimportant security impact. A Common Vulnerability Scoring System (CVSS)base score, which gives a detailed severity rating, is available from theCVE link in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Bugs Fixed
842466 - CVE-2012-3429 bind-dyndb-ldap: named DoS via DNS query with $ in name