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Fencer Vulns
low 2.6

CVE-2009-4022 json

Unspecified vulnerability in ISC BIND 9.0.x through 9.3.x, 9.4 before 9.4.3-P4, 9.5 before 9.5.2-P1, 9.6 before 9.6.1-P2, and 9.7 beta befo…

published 2009-11-25 16 y ago modified 2026-06-16 4 mo ago also EUVD-2009-3993

cvss
2.6
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
8.0%
EPSS 8.0% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

Unspecified vulnerability in ISC BIND 9.0.x through 9.3.x, 9.4 before 9.4.3-P4, 9.5 before 9.5.2-P1, 9.6 before 9.6.1-P2, and 9.7 beta before 9.7.0b3, with DNSSEC validation enabled and checking disabled (CD), allows remote attackers to conduct DNS cache poisoning attacks by receiving a recursive client query and sending a response that contains an Additional section with crafted data, which is not properly handled when the response is processed "at the same time as requesting DNSSEC records (DO)," aka Bug 20438.

Patch / fix

  • isc bind 9.4.3-P5, 9.5.2-P2, 9.6.1-P3
  • bind9 Debian 14, Debian 13, Debian 12 1:9.6.1.dfsg.P2-1

debian advisories DEBIAN-CVE-2009-4022

  • bind RHEL 5 30:9.3.6-4.P1.el5_4.1
  • bind-sdb RHEL 5 30:9.3.6-4.P1.el5_4.1
  • bind-libs RHEL 5 30:9.3.6-4.P1.el5_4.1
  • bind-utils RHEL 5 30:9.3.6-4.P1.el5_4.1
  • bind-chroot RHEL 5 30:9.3.6-4.P1.el5_4.1
  • caching-nameserver RHEL 5 30:9.3.6-4.P1.el5_4.1

red hat advisories RHSA-2009:1620

  • bind openSUSE Tumbleweed 9.10.3P4-21.1

opensuse advisories openSUSE-SU-2024:10467-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2009-4022 updated cvss 2.6

bind: cache poisoning using not validated DNSSEC responses

  • Red Hat Enterprise Linux (v. 5 server) bind 9.3.6-4.P1.el5_4.1, bind-sdb 9.3.6-4.P1.el5_4.1, bind-libs 9.3.6-4.P1.el5_4.1, bind-utils 9.3.6-4.P1.el5_4.1, bind-chroot 9.3.6-4.P1.el5_4.1, caching-nameserver 9.3.6-4.P1.el5_4.1 Red Hat Enterprise Linux Desktop (v. 5 client) bind 9.3.6-4.P1.el5_4.1, bind-sdb 9.3.6-4.P1.el5_4.1, bind-libs 9.3.6-4.P1.el5_4.1, bind-utils 9.3.6-4.P1.el5_4.1, bind-chroot 9.3.6-4.P1.el5_4.1, caching-nameserver 9.3.6-4.P1.el5_4.1 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) bind 9.3.6-4.P1.el5_4.1, bind-sdb 9.3.6-4.P1.el5_4.1, bind-libs 9.3.6-4.P1.el5_4.1, bind-utils 9.3.6-4.P1.el5_4.1, bind-chroot 9.3.6-4.P1.el5_4.1, caching-nameserver 9.3.6-4.P1.el5_4.1
    fixed: vendor fix RHSA-2009:1620

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

7.95% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 2.6 AV:N/AC:H/Au:N/C:N/I:P/A:N

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Consolidate version constraints.