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Vulnerability record · CVE-2009-4022 · published 25 November 2009

CVE-2009-4022: Isc bind vulnerability

Isc · Bind

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.

2.6 CVSS 2.0 Low EPSS 8.0% · top 5.5%
2.6CVSS 2.0 base score
8.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
88References
16 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:H/Au:N/C:N/I:P/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
ftp://ftp.sco.com/pub/unixware7/714/security/p535243_uw7/p535243b.txt
http://aix.software.ibm.com/aix/efixes/security/bind9_advisory.asc
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
http://lists.vmware.com/pipermail/security-announce/2010/000082.html
http://osvdb.org/60493
http://secunia.com/advisories/37426 Vendor Advisory
http://secunia.com/advisories/37491 Vendor Advisory
http://secunia.com/advisories/38219 Vendor Advisory
http://secunia.com/advisories/38240 Vendor Advisory
http://secunia.com/advisories/38794 Vendor Advisory
http://secunia.com/advisories/38834 Vendor Advisory
http://secunia.com/advisories/39334 Vendor Advisory
http://secunia.com/advisories/40730 Vendor Advisory
http://sunsolve.sun.com/search/document.do?assetkey=1-77-1021660.1-1
http://sunsolve.sun.com/search/document.do?assetkey=1-77-1021798.1-1
http://support.apple.com/kb/HT5002
http://wiki.rpath.com/wiki/Advisories:rPSA-2010-0018
http://www.ibm.com/support/docview.wss?uid=isg1IZ68597
http://www.ibm.com/support/docview.wss?uid=isg1IZ71667
http://www.ibm.com/support/docview.wss?uid=isg1IZ71774
http://www.kb.cert.org/vuls/id/418861 US Government Resource
http://www.mandriva.com/security/advisories?name=MDVSA-2009:304
http://www.openwall.com/lists/oss-security/2009/11/24/1
http://www.openwall.com/lists/oss-security/2009/11/24/2
http://www.openwall.com/lists/oss-security/2009/11/24/8
http://www.redhat.com/support/errata/RHSA-2009-1620.html Vendor Advisory
http://www.securityfocus.com/bid/37118
http://www.ubuntu.com/usn/USN-888-1
http://www.vupen.com/english/advisories/2009/3335 Vendor Advisory
http://www.vupen.com/english/advisories/2010/0176 Vendor Advisory
http://www.vupen.com/english/advisories/2010/0528 Vendor Advisory
http://www.vupen.com/english/advisories/2010/0622 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=538744 Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/54416
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04952488
https://issues.rpath.com/browse/RPL-3152
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10821
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11745
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7261
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7459

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2009-4022), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.