Potential 0-day on Bind 9
Internet System Consortium has published an alert earlier as they are investigating a potential vulnerability on Bind 9. There are reports of the DNS server software crashing while generating log entry - "INSIST(! dns_rdataset_isassociated(sigrdataset))" The details on this is rather limited at this point, aside from DoS effect, it's unknown whether code execution is possible at this point.
Reference - http://www.isc.org/software/bind/advisories/cve-2011-tbd
Update:
ISC would appreciate network captures of active attacks against this BIND vulnerabiliy. Please submit to us via Contact Form.
Update 2:
Patches are now available:
http://www.isc.org/software/bind
https://www.isc.org/software/bind/advisories/cve-2011-4313
Update 3:
There have been a number of reports of people being affected. If you are one and you have some packets to share it would be appreciated if you can share them. We'll anonymise any identifying info.
Thanks
Mark
Update 4:
Several honeypots have been hit with unsolicited recursive DNS queries. Whilst the query itself is normal, it is possible that this is part of a scan looking for servers that may be vulnerable. If you happen to be monitoring your DNS and you notice a recursive request let us know. if you can share information that would be great. Ideally a capture, but the source and the domain requested will be enough for now.
Thanks
Mark
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Comments
Gilbert
Nov 16th 2011
1 decade ago
wes
Nov 16th 2011
1 decade ago
I have been getting this information from our campus IT department, which has been quoting a "reliable listserv", but they didn't elaborate and right now, they're too busy to talk. However, isc.org is noting "organizations across the Internet" are being hit. Furthermore, I posted the info on a weather users list, and immediately got a call from one of the head IT guys at the National Weather Service. They're noting Google was starting to have DNS issues, and wondered if I had any further info. Explaining I'm not a DNS person, and not having any info to the sort, I told him that I didn't know, but the NWS is very concerned about this. I pointed them to the patch now available at isc.org, at which point he thanked me, and they're going to look at getting their DNS servers patched right away.
Gilbert
Nov 16th 2011
1 decade ago
Gilbert
Nov 16th 2011
1 decade ago
I have also heard reports of DNS issues within Amazon EC2, though no idea if that's also related. Thus far, knock wood, my personal machines haven't experienced issues.
Will
Nov 16th 2011
1 decade ago
Status History - Americas
Nov 15: ... resolved... DNS resolution errors... US-WEST-1 region
Nov 16: ... resolved... Delayed EC2, EBS, and RDS Metrics in US-WEST-1
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PC.Tech
Nov 18th 2011
1 decade ago
http://www.infoblox.com/en/news/press-releases/2011/infoblox-customers-protected-against-recent-dns-vulnerability.html
KL
Nov 18th 2011
1 decade ago
fmc
Nov 18th 2011
1 decade ago
GJB
Nov 19th 2011
1 decade ago