Vulnerability Note VU#542123
ISC BIND 9 resolver cache vulnerability
ISC BIND 9 resolver contains a vulnerability that could allow a attacker to keep a domain name in the cache even after it has been deleted from registration.
According to ISC:
ISC has been notified by Haixin Duan (a professor at Tsinghua University in Beijing China, who is currently visiting the International Computer Science Institute (ICSI) at the University of California, Berkeley) about a DNS resolver vulnerability. This vulnerability allows a miscreant to keep a domain name in the cache even after it has been deleted from registration. ISC is evaluating the risk of this vulnerability, but the published paper shows how this was done live across the Internet. It lists several DNS implementations and open resolver deployments as vulnerable.
The exploit was presented at the NDSS conference: "Ghost Domain Names: Revoked Yet Still Resolvable."
A remote, unauthenticated attacker can cause the BIND 9 resolver to keep a domain name in the cache even after it has been deleted from registration.
We are currently unaware of a practical solution to this problem.
Vendor Information (Learn More)
If you are a vendor and your product is affected, let
|Vendor||Status||Date Notified||Date Updated|
|Internet Systems Consortium||Affected||-||08 Feb 2012|
The Internet Systems Consortium thanks the following people for reporting this vulnerability:
Jian Jiang, Network Research Center, Tsinghua University
Haixin Duan, Network Research Center, Tsinghua University
Jianping Wu, Network Research Center, Tsinghua University
Kang Li, Department of Computer Science, University of Georgia
Jun Li, University of Oregon Carlos III University of Madrid, Institute IMDEA Networks
Jinjin Liang, Network Research Center Tsinghua University
Nicholas Weaver, International Computer Science Institute (ICSI)
This document was written by Michael Orlando.
07 Feb 2012
Date First Published:
08 Feb 2012
Date Last Updated:
23 Jul 2012
If you have feedback, comments, or additional information about this vulnerability, please send us email.