| Name | CVE-2024-33655 |
| Description | The DNS protocol in RFC 1035 and updates allows remote attackers to cause a denial of service (resource consumption) by arranging for DNS queries to be accumulated for seconds, such that responses are later sent in a pulsing burst (which can be considered traffic amplification in some cases), aka the "DNSBomb" issue. |
| 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 |
|---|
| unbound (PTS) | jessie, jessie (lts) | 1.4.22-3+deb8u4 | vulnerable |
| stretch | 1.6.0-3+deb9u2 | vulnerable |
| buster, buster (lts) | 1.9.0-2+deb10u5 | vulnerable |
| buster (security) | 1.9.0-2+deb10u4 | vulnerable |
| bullseye | 1.13.1-1+deb11u2 | vulnerable |
| bullseye (security) | 1.13.1-1+deb11u4 | vulnerable |
| bookworm (security), bookworm | 1.17.1-2+deb12u2 | vulnerable |
| sid, trixie | 1.22.0-1 | fixed |
| unbound1.9 (PTS) | stretch (security) | 1.9.0-2+deb10u2~deb9u2 | vulnerable |
| stretch (lts), stretch | 1.9.0-2+deb10u2~deb9u5 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| unbound | source | jessie | (unfixed) | end-of-life | | |
| unbound | source | stretch | (unfixed) | end-of-life | | |
| unbound | source | (unstable) | 1.20.0-1 | | | |
| unbound1.9 | source | (unstable) | (unfixed) | | | |
Notes
[bookworm] - unbound <ignored> (Minor issue, too intrusive to backport)
[bullseye] - unbound <no-dsa> (Minor issue)
[buster] - unbound <ignored> (Not affected by DoS, intrusive changes)
https://nlnetlabs.nl/downloads/unbound/CVE-2024-33655.txt
Fixed by: https://github.com/NLnetLabs/unbound/commit/c3206f4568f60c486be6d165b1f2b5b254fea3de (release-1.20.0rc1)
[stretch] - unbound1.9 <ignored> (Not affected by DoS, intrusive changes)