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Fencer Vulns
medium 6.8

CVE-2009-0025 json

BIND 9.6.0, 9.5.1, 9.5.0, 9.4.3, and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows re…

published 2009-01-07 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-0038

cvss
6.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.9%
EPSS 6.9% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

BIND 9.6.0, 9.5.1, 9.5.0, 9.4.3, and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077.

Patch / fix

  • isc bind 9.3.6-P1, 9.4.3-P1, 9.5.1-P1, 9.6.0-P1
  • bind9 Debian 14, Debian 13, Debian 12 1:9.5.1.dfsg.P1-1

debian advisories DEBIAN-CVE-2009-0025

  • bind RHEL 2.1 9.2.1-11.el2
  • bind RHEL 3 20:9.2.4-23.el3
  • bind RHEL 4 20:9.2.4-30.el4_7.1
  • bind RHEL 5 30:9.3.4-6.0.3.P1.el5_2
  • bind-sdb RHEL 5 30:9.3.4-6.0.3.P1.el5_2
  • bind-libs RHEL 3 20:9.2.4-23.el3
  • bind-libs RHEL 4 20:9.2.4-30.el4_7.1
  • bind-libs RHEL 5 30:9.3.4-6.0.3.P1.el5_2

red hat advisories RHSA-2009:0020

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-2009-0025 updated cvss 4.3

bind: DSA_do_verify() returns check issue

  • Red Hat Desktop version 3 bind 9.2.4-23.el3, bind-libs 9.2.4-23.el3, bind-utils 9.2.4-23.el3, bind-chroot 9.2.4-23.el3 Red Hat Enterprise Linux (v. 5 server) bind 9.3.4-6.0.3.P1.el5_2, bind-sdb 9.3.4-6.0.3.P1.el5_2, bind-libs 9.3.4-6.0.3.P1.el5_2, bind-utils 9.3.4-6.0.3.P1.el5_2, bind-chroot 9.3.4-6.0.3.P1.el5_2, caching-nameserver 9.3.4-6.0.3.P1.el5_2 Red Hat Enterprise Linux AS (Advanced Server) version 2.1 bind 9.2.1-11.el2, bind-utils 9.2.1-11.el2 Red Hat Enterprise Linux AS version 3 bind 9.2.4-23.el3, bind-libs 9.2.4-23.el3, bind-utils 9.2.4-23.el3, bind-chroot 9.2.4-23.el3 Red Hat Enterprise Linux AS version 4 bind 9.2.4-30.el4_7.1, bind-libs 9.2.4-30.el4_7.1, bind-utils 9.2.4-30.el4_7.1, bind-chroot 9.2.4-30.el4_7.1 Red Hat Enterprise Linux Desktop (v. 5 client) bind 9.3.4-6.0.3.P1.el5_2, bind-sdb 9.3.4-6.0.3.P1.el5_2, bind-libs 9.3.4-6.0.3.P1.el5_2, bind-utils 9.3.4-6.0.3.P1.el5_2, bind-chroot 9.3.4-6.0.3.P1.el5_2, caching-nameserver 9.3.4-6.0.3.P1.el5_2
    +9 more products
    Red Hat Enterprise Linux Desktop version 4 bind 9.2.4-30.el4_7.1, bind-libs 9.2.4-30.el4_7.1, bind-utils 9.2.4-30.el4_7.1, bind-chroot 9.2.4-30.el4_7.1 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) bind 9.3.4-6.0.3.P1.el5_2, bind-sdb 9.3.4-6.0.3.P1.el5_2, bind-libs 9.3.4-6.0.3.P1.el5_2, bind-utils 9.3.4-6.0.3.P1.el5_2, bind-chroot 9.3.4-6.0.3.P1.el5_2, caching-nameserver 9.3.4-6.0.3.P1.el5_2 Red Hat Enterprise Linux ES version 2.1 bind 9.2.1-11.el2, bind-utils 9.2.1-11.el2 Red Hat Enterprise Linux ES version 3 bind 9.2.4-23.el3, bind-libs 9.2.4-23.el3, bind-utils 9.2.4-23.el3, bind-chroot 9.2.4-23.el3 Red Hat Enterprise Linux ES version 4 bind 9.2.4-30.el4_7.1, bind-libs 9.2.4-30.el4_7.1, bind-utils 9.2.4-30.el4_7.1, bind-chroot 9.2.4-30.el4_7.1 Red Hat Enterprise Linux WS version 2.1 bind 9.2.1-11.el2, bind-utils 9.2.1-11.el2 Red Hat Enterprise Linux WS version 3 bind 9.2.4-23.el3, bind-libs 9.2.4-23.el3, bind-utils 9.2.4-23.el3, bind-chroot 9.2.4-23.el3 Red Hat Enterprise Linux WS version 4 bind 9.2.4-30.el4_7.1, bind-libs 9.2.4-30.el4_7.1, bind-utils 9.2.4-30.el4_7.1, bind-chroot 9.2.4-30.el4_7.1 Red Hat Linux Advanced Workstation 2.1 bind 9.2.1-11.el2, bind-utils 9.2.1-11.el2
    fixed: vendor fix RHSA-2009:0020

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

6.86% 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 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

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.