The default configuration of ISC BIND before 9.4.1-P1, when configured as a caching name server, allows recursive queries and provides additional delegation information to arbitrary IP addresses, which allows remote attackers to cause a denial of service (traffic amplification) via DNS queries with spoofed source IP addresses.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Bind | Isc | 9.3.2 (including) | 9.3.2 (including) |
| Bind9 | Ubuntu | dapper | * |
| Bind9 | Ubuntu | edgy | * |
| Bind9 | Ubuntu | feisty | * |
| Bind9 | Ubuntu | upstream | * |
References
- http://dns.measurement-factory.com/surveys/sum1.html
- http://kb.isc.org/article/AA-00269
- http://www.securityfocus.com/archive/1/426368/100/0/threaded
- http://www.us-cert.gov/reading_room/DNS-recursion121605.pdf
- http://dns.measurement-factory.com/surveys/sum1.html
- http://kb.isc.org/article/AA-00269
- http://www.securityfocus.com/archive/1/426368/100/0/threaded
- http://www.us-cert.gov/reading_room/DNS-recursion121605.pdf