Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 525
Alerts This Week
Warning Icon 1 525

Red Hat RHSA-2016:1944-01 Critical Update: BIND Denial of Service Patch

red hat
Calendar Grey September 28, 2016
Scroller Redhat
Oracle releases a critical security patch for MySQL impacting various Oracle Linux editions addressing potential remote code execution vulnerability swiftly.
An update for bind is now available for Red Hat Enterprise Linux 5, Red Hat Enterprise Linux 6, and 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 the update, the BIND daemon (named) will be restarted automatically.

Summary

The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.
Security Fix(es):
* A denial of service flaw was found in the way BIND constructed a response to a query that met certain criteria. A remote attacker could use this flaw to make named exit unexpectedly with an assertion failure via a specially crafted DNS request packet. (CVE-2016-2776)
Red Hat would like to thank ISC for reporting this issue.

Topics%20covered

Topics Covered

security advisory security update Red Hat bind DoS important fix

References

https://access.redhat.com/security/cve/CVE-2016-2776 https://access.redhat.com/security/updates/classification/#important https://kb.isc.org/docs/aa-01419

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source: bind-9.3.6-25.P1.el5_11.9.src.rpm
i386: bind-9.3.6-25.P1.el5_11.9.i386.rpm bind-debuginfo-9.3.6-25.P1.el5_11.9.i386.rpm bind-libs-9.3.6-25.P1.el5_11.9.i386.rpm bind-sdb-9.3.6-25.P1.el5_11.9.i386.rpm bind-utils-9.3.6-25.P1.el5_11.9.i386.rpm
x86_64: bind-9.3.6-25.P1.el5_11.9.x86_64.rpm bind-debuginfo-9.3.6-25.P1.el5_11.9.i386.rpm bind-debuginfo-9.3.6-25.P1.el5_11.9.x86_64.rpm bind-libs-9.3.6-25.P1.el5_11.9.i386.rpm bind-libs-9.3.6-25.P1.el5_11.9.x86_64.rpm bind-sdb-9.3.6-25.P1.el5_11.9.x86_64.rpm bind-utils-9.3.6-25.P1.el5_11.9.x86_64.rpm
Red Hat Enterprise Linux Desktop Workstation (v. 5 client):
Source: bind-9.3.6-25.P1.el5_11.9.src.rpm
i386: bind-chroot-9.3.6-25.P1.el5_11.9.i386.rpm bind-debuginfo-9.3.6-25.P1.el5_11.9.i386.rpm bind-devel-9.3.6-25.P1.el5_11.9.i386.rpm bind-libbind-devel-9.3.6-25.P1.el5_11.9.i386.rpm caching-nameserver-9.3.6-25.P1.el5_11.9.i386.rpm
x86_64: bind-chroot-9.3.6-25.P1.el5_11.9.x86_64.rpm bind-debuginfo-9.3.6-25.P1.el5_11.9.i386.rpm bind-debuginfo-9.3.6-25.P1.el5_11.9.x86_64.rpm bind-devel-9.3.6-25.P1.el5_11.9.i386.rpm bind-devel-9.3.6-25.P1.el5_11.9.x86_64.rpm bind-libbind-devel-9.3.6-25.P1.el5_11.9.i386.rpm bind-libbind-devel-9.3.6-25.P1.el5_11.9.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2016:1944-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2016:1944.html
Issue date: 2016-09-28

Topic

An update for bind is now available for Red Hat Enterprise Linux 5, Red HatEnterprise Linux 6, and 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 security update Red Hat bind DoS important fix

Relevant Releases Architectures

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

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

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

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

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

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, 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 Desktop Workstation (v. 5 client) - 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) - noarch, 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) - noarch, 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

1378380 - CVE-2016-2776 bind: assertion failure in buffer.c while building responses to a specifically constructed request

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.