| Name | CVE-2025-40780 |
| Description | In specific circumstances, due to a weakness in the Pseudo Random Number Generator (PRNG) that is used, it is possible for an attacker to predict the source port and query ID that BIND will use. This issue affects BIND 9 versions 9.16.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.16.8-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-6033-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| bind9 (PTS) | bullseye | 1:9.16.50-1~deb11u2 | vulnerable |
| bullseye (security) | 1:9.16.50-1~deb11u3 | vulnerable | |
| bookworm | 1:9.18.33-1~deb12u2 | vulnerable | |
| bookworm (security) | 1:9.18.41-1~deb12u1 | fixed | |
| trixie | 1:9.20.11-4 | vulnerable | |
| trixie (security) | 1:9.20.15-1~deb13u1 | fixed | |
| forky, sid | 1:9.20.15-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| bind9 | source | bookworm | 1:9.18.41-1~deb12u1 | DSA-6033-1 | ||
| bind9 | source | trixie | 1:9.20.15-1~deb13u1 | DSA-6033-1 | ||
| bind9 | source | (unstable) | 1:9.20.15-1 |
https://kb.isc.org/docs/cve-2025-40780
Fixed by: https://gitlab.isc.org/isc-projects/bind9/-/commit/2924910eeea5c86720149bc48d799ccb69e59797 (v9.20.15)
Fixed by: https://gitlab.isc.org/isc-projects/bind9/-/commit/26c77915d52a577be6f421fd351506c29185ab97 (v9.20.15)
Fixed by: https://gitlab.isc.org/isc-projects/bind9/-/commit/8330b49fb90bfeae14b47b7983e9459cc2bbaffe (v9.18.41)