Issued:

2009-07-29

Updated:

2009-07-29

RHSA-2009:1181 - Important: bind security and bug fix update

Synopsis

Important: bind security and bug fix update

Type/Severity

Security Advisory Important

Topic

Updated bind packages that fix a security issue and a bug are now available for Red Hat Enterprise Linux 3.

This update has been rated as having important security impact by the Red Hat Security Response Team.

Description

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.

A flaw was found in the way BIND handles dynamic update message packets containing the "ANY" record type. A remote attacker could use this flaw to send a specially-crafted dynamic update packet that could cause named to exit with an assertion failure. (CVE-2009-0696)

Note: even if named is not configured for dynamic updates, receiving such a specially-crafted dynamic update packet could still cause named to exit unexpectedly.

This update also fixes the following bug:

• the following message could have been logged: "internal_accept: fcntl() failed: Too many open files". With these updated packages, timeout queries are aborted in order to reduce the number of open UDP sockets, and when the accept() function returns an EMFILE error value, that situation is now handled gracefully, thus resolving the issue. (BZ#498164)

All BIND users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues. After installing the update, the BIND daemon (named) will be restarted automatically.

Solution

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

This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at This content is not included.http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

Updated Packages

• bind-9.2.4-25.el3.ppc.rpm
• bind-libs-9.2.4-25.el3.ppc.rpm
• bind-chroot-9.2.4-25.el3.ppc.rpm
• bind-devel-9.2.4-25.el3.ppc.rpm
• bind-utils-9.2.4-25.el3.ppc.rpm

Fixes

• This content is not included.BZ - 498164
• This content is not included.BZ - 514292

CVEs

• CVE-2009-0696

References

• http://www.redhat.com/security/updates/classification/#important
• Content from www.isc.org is not included.Content from www.isc.org is not included.https://www.isc.org/node/474

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.