Feeds

BIND crash bug prompts urgent update call

Master server flaw could break the interwebs

Next gen security for virtualised datacentres

A vulnerability in BIND creates a means for miscreants to crash vulnerable Domain Name System servers, posing a threat to overall internet stability as a result.

Exploits targeted at BIND (Berkeley Internet Name Domain Server) version 9 are already in circulation, warns the Internet Software Consortium, the group which develops the software. ISC urges sys admins to upgrade immediately, to defend against the "high risk" bug.

Sys admins are urged to upgrade BIND servers to versions 9.4.3-P3, 9.5.1-P3 or 9.6.1-P1 of the software, which defend against the flaw.

The vulnerability involves BIND servers that act as a master (slave systems are unaffected) and involves problems in dealing with malformed update messages, which can used to cause a server to crash, as explained in a security alert by ISC here.

Receipt of a specially-crafted dynamic update message to a zone for which the server is the master may cause BIND 9 servers to exit. Testing indicates that the attack packet has to be formulated against a zone for which that machine is a master. Launching the attack against slave zones does not trigger the assert.

BIND is used on a great majority of DNS servers on the Internet. DNS maps between easy-to-remember domain names, understood by humans, and their corresponding numerical IP addresses, needed by computers. Simply put, the system can be compared to a phone book for the internet.

Screwing with this system creates a means to possibly derail surfing and email delivery, among many other undesirable effects. ®

The essential guide to IT transformation

More from The Register

next story
Goog says patch⁵⁰ your Chrome
64-bit browser loads cat vids FIFTEEN PERCENT faster!
Chinese hackers spied on investigators of Flight MH370 - report
Classified data on flight's disappearance pinched
KER-CHING! CryptoWall ransomware scam rakes in $1 MEEELLION
Anatomy of the net's most destructive ransomware threat
NIST to sysadmins: clean up your SSH mess
Too many keys, too badly managed
Scratched PC-dispatch patch patched, hatched in batch rematch
Windows security update fixed after triggering blue screens (and screams) of death
Researchers camouflage haxxor traps with fake application traffic
Honeypots sweetened to resemble actual workloads, complete with 'secure' logins
prev story

Whitepapers

Top 10 endpoint backup mistakes
Avoid the ten endpoint backup mistakes to ensure that your critical corporate data is protected and end user productivity is improved.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Backing up distributed data
Eliminating the redundant use of bandwidth and storage capacity and application consolidation in the modern data center.
The essential guide to IT transformation
ServiceNow discusses three IT transformations that can help CIOs automate IT services to transform IT and the enterprise
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.