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    CVE-2009-4022

    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.

    Published:Nov 23, 2009
    Last Modified:Apr 23, 2026
    EPS:Nov 25, 2009
    EPSS Score:0.20044
    CVSS Score:2.6

    Affected Products

    Vendor
    Isc
    Product
    Bind
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-12617 (CVSS 7.5) — The issue is unexpected program termination based on ordering and/or specific content in responses to queries …
    CVE-2026-11605 (CVSS 7.5) — The issue is a resource exhaustion vulnerability associated with DNSSEC validation. BIND always validates all …
    CVE-2026-10723 (CVSS 6.8) — BIND may accept incorrect child-zone NSEC3 records as valid, which could allow an attacker to forge authentica…
    CVE-2026-10822 (CVSS 6.5) — If BIND encounters a particular invalid data structure in a DNS record, it will accept the invalid data, and m…
    CVE-2026-13204 (CVSS 7.5) — If a provably insecure domain is covered by both an NSEC and NSEC3 record at the parent, and there exist an RR…
    CVE-2026-11331 (CVSS 7.5) — An attacker who knows (or guesses) that a resolver uses RPZ with wildcard CNAME policies can craft query names…
    CVE-2026-11622 (CVSS 7.5) — A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer f…
    CVE-2026-11721 (CVSS 7.5) — It is possible for an attacker's zone to respond to a query with an RRSIG that has a smaller number of labels …
    CVE-2026-13321 (CVSS 8.6) — The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the si…
    CVE-2026-5950 (CVSS 5.3) — An unbounded resend loop vulnerability exists in the BIND 9 resolver state machine during bad-server handling,…

    References

    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
    http://secunia.com/advisories/37491
    http://secunia.com/advisories/38219
    http://secunia.com/advisories/38240
    http://secunia.com/advisories/38794
    http://secunia.com/advisories/38834
    http://secunia.com/advisories/39334
    http://secunia.com/advisories/40730
    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
    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
    http://www.securityfocus.com/bid/37118
    http://www.ubuntu.com/usn/USN-888-1
    http://www.vupen.com/english/advisories/2009/3335
    http://www.vupen.com/english/advisories/2010/0176
    http://www.vupen.com/english/advisories/2010/0528
    http://www.vupen.com/english/advisories/2010/0622
    https://bugzilla.redhat.com/show_bug.cgi?id=538744
    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
    https://www.isc.org/advisories/CVE-2009-4022v6
    https://www.isc.org/advisories/CVE2009-4022
    https://www.redhat.com/archives/fedora-package-announce/2009-November/msg01172.html
    https://www.redhat.com/archives/fedora-package-announce/2009-November/msg01188.html
    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
    http://secunia.com/advisories/37491
    http://secunia.com/advisories/38219
    http://secunia.com/advisories/38240
    http://secunia.com/advisories/38794
    http://secunia.com/advisories/38834
    http://secunia.com/advisories/39334
    http://secunia.com/advisories/40730
    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
    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
    http://www.securityfocus.com/bid/37118
    http://www.ubuntu.com/usn/USN-888-1
    http://www.vupen.com/english/advisories/2009/3335
    http://www.vupen.com/english/advisories/2010/0176
    http://www.vupen.com/english/advisories/2010/0528
    http://www.vupen.com/english/advisories/2010/0622
    https://bugzilla.redhat.com/show_bug.cgi?id=538744
    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
    https://www.isc.org/advisories/CVE-2009-4022v6
    https://www.isc.org/advisories/CVE2009-4022
    https://www.redhat.com/archives/fedora-package-announce/2009-November/msg01172.html
    https://www.redhat.com/archives/fedora-package-announce/2009-November/msg01188.html

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High