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Red Hat Product Errata RHSA-2012:0683 - Security Advisory
Issued:
2012-05-21
Updated:
2012-05-21

RHSA-2012:0683 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: bind-dyndb-ldap security update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An updated bind-dyndb-ldap package that fixes one security issue is now
available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having
important 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.

Description

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 handled LDAP query errors. If a
remote attacker were able to send DNS queries to a named server that is
configured to use bind-dyndb-ldap, they could trigger such an error with a
DNS query leveraging bind-dyndb-ldap's insufficient escaping of the LDAP
base DN (distinguished name). This would result in an invalid LDAP query
that named would retry in a loop, preventing it from responding to other
DNS queries. With this update, bind-dyndb-ldap only attempts to retry one
time when an LDAP search returns an unexpected error. (CVE-2012-2134)

Red Hat would like to thank Ronald van Zantvoort 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.

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

Affected Products

  • Red Hat Enterprise Linux Server 6 x86_64
  • Red Hat Enterprise Linux Server 6 i386
  • Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.2 x86_64
  • Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.2 i386
  • Red Hat Enterprise Linux for IBM z Systems 6 s390x
  • Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 6.2 s390x
  • Red Hat Enterprise Linux for Power, big endian 6 ppc64
  • Red Hat Enterprise Linux for Power, big endian - Extended Update Support 6.2 ppc64
  • Red Hat Enterprise Linux Server from RHUI 6 x86_64
  • Red Hat Enterprise Linux Server from RHUI 6 i386
  • Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.2 x86_64
  • Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.2 i386
  • Red Hat Storage 2.0 x86_64
  • Red Hat Gluster Storage Server for On-premise 2.0 x86_64
  • Red Hat Storage for Public Cloud (via RHUI) 2.0 x86_64
  • Red Hat Enterprise Linux Server - AUS 6.2 x86_64
  • Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
  • Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
  • Red Hat Enterprise Linux Workstation 6 x86_64
  • Red Hat Enterprise Linux Workstation 6 i386
  • Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x

Fixes

  • BZ - 815846 - CVE-2012-2134 bind-dyndb-ldap: Bind DoS (named hang) by processing DNS query for zone served by bind-dyndb-ldap

CVEs

  • CVE-2012-2134

References

  • https://access.redhat.com/security/updates/classification/#important
Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Enterprise Linux Server 6

SRPM
bind-dyndb-ldap-0.2.0-7.el6_2.1.src.rpm SHA-256: 7cbcb8fed512f7edf62576154522384c815dc44c2b72eeb7b161594027b89470
x86_64
bind-dyndb-ldap-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: ef954f7960fb8bd61f94c30dd6cd6c9ab77af76fd4a6320e64bf15b0c8bdb231
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: 2fad1fff68e9108d841ce15b17a362e90f704390b2c62bd7c06664d48b0510c5
i386
bind-dyndb-ldap-0.2.0-7.el6_2.1.i686.rpm SHA-256: e80b029f304107840042c269d3e1d3eaf966476536a0c5b8dbc0d13e03e678bd
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.i686.rpm SHA-256: 9d26a977623eff12847a501c2aa624190f73547c64f3bc718ed4d3943ffd0376

Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.2

SRPM
bind-dyndb-ldap-0.2.0-7.el6_2.1.src.rpm SHA-256: 7cbcb8fed512f7edf62576154522384c815dc44c2b72eeb7b161594027b89470
x86_64
bind-dyndb-ldap-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: ef954f7960fb8bd61f94c30dd6cd6c9ab77af76fd4a6320e64bf15b0c8bdb231
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: 2fad1fff68e9108d841ce15b17a362e90f704390b2c62bd7c06664d48b0510c5
i386
bind-dyndb-ldap-0.2.0-7.el6_2.1.i686.rpm SHA-256: e80b029f304107840042c269d3e1d3eaf966476536a0c5b8dbc0d13e03e678bd
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.i686.rpm SHA-256: 9d26a977623eff12847a501c2aa624190f73547c64f3bc718ed4d3943ffd0376

Red Hat Enterprise Linux Server from RHUI 6

SRPM
bind-dyndb-ldap-0.2.0-7.el6_2.1.src.rpm SHA-256: 7cbcb8fed512f7edf62576154522384c815dc44c2b72eeb7b161594027b89470
x86_64
bind-dyndb-ldap-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: ef954f7960fb8bd61f94c30dd6cd6c9ab77af76fd4a6320e64bf15b0c8bdb231
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: 2fad1fff68e9108d841ce15b17a362e90f704390b2c62bd7c06664d48b0510c5
i386
bind-dyndb-ldap-0.2.0-7.el6_2.1.i686.rpm SHA-256: e80b029f304107840042c269d3e1d3eaf966476536a0c5b8dbc0d13e03e678bd
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.i686.rpm SHA-256: 9d26a977623eff12847a501c2aa624190f73547c64f3bc718ed4d3943ffd0376

Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.2

SRPM
bind-dyndb-ldap-0.2.0-7.el6_2.1.src.rpm SHA-256: 7cbcb8fed512f7edf62576154522384c815dc44c2b72eeb7b161594027b89470
x86_64
bind-dyndb-ldap-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: ef954f7960fb8bd61f94c30dd6cd6c9ab77af76fd4a6320e64bf15b0c8bdb231
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: 2fad1fff68e9108d841ce15b17a362e90f704390b2c62bd7c06664d48b0510c5
i386
bind-dyndb-ldap-0.2.0-7.el6_2.1.i686.rpm SHA-256: e80b029f304107840042c269d3e1d3eaf966476536a0c5b8dbc0d13e03e678bd
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.i686.rpm SHA-256: 9d26a977623eff12847a501c2aa624190f73547c64f3bc718ed4d3943ffd0376

Red Hat Storage for Public Cloud (via RHUI) 2.0

SRPM
bind-dyndb-ldap-0.2.0-7.el6_2.1.src.rpm SHA-256: 7cbcb8fed512f7edf62576154522384c815dc44c2b72eeb7b161594027b89470
x86_64
bind-dyndb-ldap-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: ef954f7960fb8bd61f94c30dd6cd6c9ab77af76fd4a6320e64bf15b0c8bdb231
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: 2fad1fff68e9108d841ce15b17a362e90f704390b2c62bd7c06664d48b0510c5

Red Hat Enterprise Linux Server - AUS 6.2

SRPM
bind-dyndb-ldap-0.2.0-7.el6_2.1.src.rpm SHA-256: 7cbcb8fed512f7edf62576154522384c815dc44c2b72eeb7b161594027b89470
x86_64
bind-dyndb-ldap-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: ef954f7960fb8bd61f94c30dd6cd6c9ab77af76fd4a6320e64bf15b0c8bdb231
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: 2fad1fff68e9108d841ce15b17a362e90f704390b2c62bd7c06664d48b0510c5

Red Hat Enterprise Linux Server - Extended Life Cycle Support 6

SRPM
bind-dyndb-ldap-0.2.0-7.el6_2.1.src.rpm SHA-256: 7cbcb8fed512f7edf62576154522384c815dc44c2b72eeb7b161594027b89470
x86_64
bind-dyndb-ldap-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: ef954f7960fb8bd61f94c30dd6cd6c9ab77af76fd4a6320e64bf15b0c8bdb231
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: 2fad1fff68e9108d841ce15b17a362e90f704390b2c62bd7c06664d48b0510c5
i386
bind-dyndb-ldap-0.2.0-7.el6_2.1.i686.rpm SHA-256: e80b029f304107840042c269d3e1d3eaf966476536a0c5b8dbc0d13e03e678bd
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.i686.rpm SHA-256: 9d26a977623eff12847a501c2aa624190f73547c64f3bc718ed4d3943ffd0376

Red Hat Enterprise Linux Workstation 6

SRPM
bind-dyndb-ldap-0.2.0-7.el6_2.1.src.rpm SHA-256: 7cbcb8fed512f7edf62576154522384c815dc44c2b72eeb7b161594027b89470
x86_64
bind-dyndb-ldap-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: ef954f7960fb8bd61f94c30dd6cd6c9ab77af76fd4a6320e64bf15b0c8bdb231
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: 2fad1fff68e9108d841ce15b17a362e90f704390b2c62bd7c06664d48b0510c5
i386
bind-dyndb-ldap-0.2.0-7.el6_2.1.i686.rpm SHA-256: e80b029f304107840042c269d3e1d3eaf966476536a0c5b8dbc0d13e03e678bd
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.i686.rpm SHA-256: 9d26a977623eff12847a501c2aa624190f73547c64f3bc718ed4d3943ffd0376

Red Hat Enterprise Linux for IBM z Systems 6

SRPM
bind-dyndb-ldap-0.2.0-7.el6_2.1.src.rpm SHA-256: 7cbcb8fed512f7edf62576154522384c815dc44c2b72eeb7b161594027b89470
s390x
bind-dyndb-ldap-0.2.0-7.el6_2.1.s390x.rpm SHA-256: de5d8f50d513bb03acdfce064dd942b8a5c1d4c439ce1d362c46b59f556eaa27
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.s390x.rpm SHA-256: df55d79a435d5183045140c2906430af09db5333e7ec31b703882db325372c7e

Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 6.2

SRPM
bind-dyndb-ldap-0.2.0-7.el6_2.1.src.rpm SHA-256: 7cbcb8fed512f7edf62576154522384c815dc44c2b72eeb7b161594027b89470
s390x
bind-dyndb-ldap-0.2.0-7.el6_2.1.s390x.rpm SHA-256: de5d8f50d513bb03acdfce064dd942b8a5c1d4c439ce1d362c46b59f556eaa27
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.s390x.rpm SHA-256: df55d79a435d5183045140c2906430af09db5333e7ec31b703882db325372c7e

Red Hat Enterprise Linux for Power, big endian 6

SRPM
bind-dyndb-ldap-0.2.0-7.el6_2.1.src.rpm SHA-256: 7cbcb8fed512f7edf62576154522384c815dc44c2b72eeb7b161594027b89470
ppc64
bind-dyndb-ldap-0.2.0-7.el6_2.1.ppc64.rpm SHA-256: d53f7d765a0e0ef3440c8657b4c26cc9965fa5980d19517d715bbeed65b5ad94
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.ppc64.rpm SHA-256: 7017522813c31ecce70d298f4d95a8c1eea19eb0384e7830ada4b3bd320ac74f

Red Hat Enterprise Linux for Power, big endian - Extended Update Support 6.2

SRPM
bind-dyndb-ldap-0.2.0-7.el6_2.1.src.rpm SHA-256: 7cbcb8fed512f7edf62576154522384c815dc44c2b72eeb7b161594027b89470
ppc64
bind-dyndb-ldap-0.2.0-7.el6_2.1.ppc64.rpm SHA-256: d53f7d765a0e0ef3440c8657b4c26cc9965fa5980d19517d715bbeed65b5ad94
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.ppc64.rpm SHA-256: 7017522813c31ecce70d298f4d95a8c1eea19eb0384e7830ada4b3bd320ac74f

Red Hat Storage 2.0

SRPM
bind-dyndb-ldap-0.2.0-7.el6_2.1.src.rpm SHA-256: 7cbcb8fed512f7edf62576154522384c815dc44c2b72eeb7b161594027b89470
x86_64
bind-dyndb-ldap-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: ef954f7960fb8bd61f94c30dd6cd6c9ab77af76fd4a6320e64bf15b0c8bdb231
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: 2fad1fff68e9108d841ce15b17a362e90f704390b2c62bd7c06664d48b0510c5

Red Hat Gluster Storage Server for On-premise 2.0

SRPM
bind-dyndb-ldap-0.2.0-7.el6_2.1.src.rpm SHA-256: 7cbcb8fed512f7edf62576154522384c815dc44c2b72eeb7b161594027b89470
x86_64
bind-dyndb-ldap-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: ef954f7960fb8bd61f94c30dd6cd6c9ab77af76fd4a6320e64bf15b0c8bdb231
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.x86_64.rpm SHA-256: 2fad1fff68e9108d841ce15b17a362e90f704390b2c62bd7c06664d48b0510c5

Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6

SRPM
bind-dyndb-ldap-0.2.0-7.el6_2.1.src.rpm SHA-256: 7cbcb8fed512f7edf62576154522384c815dc44c2b72eeb7b161594027b89470
s390x
bind-dyndb-ldap-0.2.0-7.el6_2.1.s390x.rpm SHA-256: de5d8f50d513bb03acdfce064dd942b8a5c1d4c439ce1d362c46b59f556eaa27
bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.s390x.rpm SHA-256: df55d79a435d5183045140c2906430af09db5333e7ec31b703882db325372c7e

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.

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