Feeds

Bug puts net's most popular DNS app in Bind

Rare but remote

Choosing a cloud hosting partner with confidence

Makers of Bind have warned of a security vulnerability in versions of the domain name resolution application that could allow attackers to trick servers into returning unauthorized results.

The bug in the Berkeley Internet Name Domain program surfaces only when the DNSSEC security implementation is enabled and the name server accepts queries from the internet at large, a designation known as recursive. The combination of name servers being both recursive and using DNSSEC to validate records is rare, according to this advisory from the Internet Systems Consortium, which maintains Bind.

But DNS servers that are so configured may at risk of attacks that can be remotely launched. "A nameserver with DNSSEC validation enabled may incorrectly add records to its cache from the additional section of responses received during resolution of a recursive client query," ISC representatives wrote.

Bind is the internet's most widely used domain name system software. It is used to translate domain names into numeric IP addresses. DNSSEC is designed to cryptographically authenticate servers that provide DNS look-up information to ensure it is authentic.

Administrators are advised to upgrade Bind to version 9.4.3-P4, 9.5.2-P1, or 9.6.1-P2. There are no fixes for versions 9.0 through 9.3, which are being phased out. Those not able to immediately patch can restrict recursion. ®

Internet Security Threat Report 2014

More from The Register

next story
FYI: OS X Yosemite's Spotlight tells Apple EVERYTHING you're looking for
It's on by default – didn't you read the small print?
Russian hackers exploit 'Sandworm' bug 'to spy on NATO, EU PCs'
Fix imminent from Microsoft for Vista, Server 2008, other stuff
Edward who? GCHQ boss dodges Snowden topic during last speech
UK spies would rather 'walk' than do 'mass surveillance'
Microsoft pulls another dodgy patch
Redmond makes a hash of hashing add-on
'LulzSec leader Aush0k' found to be naughty boy not worthy of jail
15 months home detention leaves egg on feds' faces as they grab for more power
China is ALREADY spying on Apple iCloud users, claims watchdog
Attack harvests users' info at iPhone 6 launch
Carders punch holes through Staples
Investigation launched into East Coast stores
prev story

Whitepapers

Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.
Three 1TB solid state scorchers up for grabs
Big SSDs can be expensive but think big and think free because you could be the lucky winner of one of three 1TB Samsung SSD 840 EVO drives that we’re giving away worth over £300 apiece.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.