| Name | CVE-2002-2211 |
| Description | BIND 4 and BIND 8, when resolving recursive DNS queries for arbitrary hosts, allows remote attackers to conduct DNS cache poisoning via a birthday attack that uses a large number of open queries for the same resource record (RR) combined with spoofed responses, which increases the possibility of successfully spoofing a response in a way that is more efficient than brute force methods. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| bind9 (PTS) | bullseye | 1:9.16.50-1~deb11u2 | fixed |
| bullseye (security) | 1:9.16.50-1~deb11u1 | fixed |
| bookworm, bookworm (security) | 1:9.18.28-1~deb12u2 | fixed |
| sid, trixie | 1:9.20.4-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| bind | source | (unstable) | (unfixed) | unimportant | | |
| bind9 | source | (unstable) | (not affected) | | | |
Notes
- bind9 <not-affected> (does not send parallel queries)
Disabling recursion does not close all attack vectors.
Browser reflection attacks will still work.
Bind 8 design limitations that are only addressed in bind 9 are not
treated a security issues, DNS admins need to be aware what they are using