Blogs

Last modified: January 30, 2014
  • Important Security Advisory Posted

    We have today posted updated versions of 9.9.6 and 9.10.1 to address a significant security vulnerability in DNS resolution. The flaw was discovered by Florian Maury of ANSSI, and applies to any recursive resolver that does not support a limit on the number of recursions. , A flaw in delegation handling could be exploited to put named into

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  • ISC is now offering Advance Security Notification for Unbound and NSD

    ISC has signed a memo of understanding with NLnet Labs, makers of Unbound and NSD, to collaborate in providing support to users of our DNS software. NSD is a popular alternative to BIND for authoritative DNS services, and Unbound is a high-performance recursive resolver. As a first step in this collaboration, ISC is now selling advance security notification of vulnerabilities

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  • ICANN 51: Accountability for F-root operations

    ISC has operated F-Root, one of the world’s thirteen root name servers, since 1994. We have this service deployed around the world in 55 locations to offer fast, reliable access even in otherwise underserved parts of the world. We have well over a thousand peers. F-Root is supported with the help of multi-year donations in kind from many service providers and other

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  • ISC’s DHCP client can be used as a delivery vector for bash bug

    Despite reports to the contrary saying that a 2011 change (CVE-2011-0997) to dhclient prevents exploitation of this flaw, ISC has confirmed that the DHCP client provided as a part of ISC DHCP can be used to exploit the bash vulnerability if the operator of a rogue DHCP server passes a specially constructed value as the payload of a DHCP option field.

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  • Certificate Authority Authorization Records

    Support for the CAA record was added to BIND with the 9.10.1B release, after Rick Andrews of Symantec approached us at an IETF meeting and asked why we didn’t have it already.  Rick is an expert and evangelist for the use of certificates, so we invited Rick to explain why people should use CAA records.   Certificate Authority Authorization (CAA, RFC 6844)

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