Description
A `named` caching resolver that is configured to send ECS (EDNS Client Subnet) options may be vulnerable to a cache-poisoning attack. This issue affects BIND 9 versions 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.37-S1, and 9.20.9-S1 through 9.20.10-S1.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
High
Availability
None
Affected products
- ISC / BIND 99.11.3-S1 – 9.16.50-S1
- ISC / BIND 99.18.11-S1 – 9.18.37-S1
- ISC / BIND 99.20.9-S1 – 9.20.10-S1
- ISC / BIND 99.0.0 – 9.20.10