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    CVE-2007-2930

    The (1) NSID_SHUFFLE_ONLY and (2) NSID_USE_POOL PRNG algorithms in ISC BIND 8 before 8.4.7-P1 generate predictable DNS query identifiers when sending outgoing queries such as NOTIFY messages when answering questions as a resolver, which allows remote attackers to poison DNS caches via unknown vectors. NOTE: this issue is different from CVE-2007-2926.

    Published:Sep 12, 2007
    Last Modified:Apr 23, 2026
    EPS:Sep 12, 2007
    EPSS Score:0.17646
    CVSS Score:4.3

    Affected Products

    Vendor
    Isc
    Product
    Bind

    Exploits

    https://www.exploit-db.com/exploits/30535https://www.exploit-db.com/exploits/30536

    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

    http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01283837
    http://secunia.com/advisories/26629
    http://secunia.com/advisories/26858
    http://secunia.com/advisories/27433
    http://secunia.com/advisories/27459
    http://secunia.com/advisories/27465
    http://secunia.com/advisories/27696
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-103063-1
    http://sunsolve.sun.com/search/document.do?assetkey=1-66-200859-1
    http://support.avaya.com/elmodocs2/security/ASA-2007-448.htm
    http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=653968
    http://www.ciac.org/ciac/bulletins/r-333.shtml
    http://www.isc.org/index.pl?/sw/bind/bind8-eol.php
    http://www.kb.cert.org/vuls/id/927905
    http://www.securityfocus.com/archive/1/477870/100/100/threaded
    http://www.securityfocus.com/archive/1/481424/100/0/threaded
    http://www.securityfocus.com/archive/1/481659/100/0/threaded
    http://www.securityfocus.com/bid/25459
    http://www.securitytracker.com/id?1018615
    http://www.trusteer.com/docs/bind8dns.html
    http://www.vupen.com/english/advisories/2007/2991
    http://www.vupen.com/english/advisories/2007/3192
    http://www.vupen.com/english/advisories/2007/3639
    http://www.vupen.com/english/advisories/2007/3668
    http://www.vupen.com/english/advisories/2007/3936
    http://www116.nortel.com/pub/repository/CLARIFY/DOCUMENT/2007/43/022954-01.pdf
    http://www14.software.ibm.com/webapp/set2/subscriptions/pqvcmjd?mode=18&ID=3975
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2154
    http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01283837
    http://secunia.com/advisories/26629
    http://secunia.com/advisories/26858
    http://secunia.com/advisories/27433
    http://secunia.com/advisories/27459
    http://secunia.com/advisories/27465
    http://secunia.com/advisories/27696
    http://sunsolve.sun.com/search/document.do?assetkey=1-26-103063-1
    http://sunsolve.sun.com/search/document.do?assetkey=1-66-200859-1
    http://support.avaya.com/elmodocs2/security/ASA-2007-448.htm
    http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=653968
    http://www.ciac.org/ciac/bulletins/r-333.shtml
    http://www.isc.org/index.pl?/sw/bind/bind8-eol.php
    http://www.kb.cert.org/vuls/id/927905
    http://www.securityfocus.com/archive/1/477870/100/100/threaded
    http://www.securityfocus.com/archive/1/481424/100/0/threaded
    http://www.securityfocus.com/archive/1/481659/100/0/threaded
    http://www.securityfocus.com/bid/25459
    http://www.securitytracker.com/id?1018615
    http://www.trusteer.com/docs/bind8dns.html
    http://www.vupen.com/english/advisories/2007/2991
    http://www.vupen.com/english/advisories/2007/3192
    http://www.vupen.com/english/advisories/2007/3639
    http://www.vupen.com/english/advisories/2007/3668
    http://www.vupen.com/english/advisories/2007/3936
    http://www116.nortel.com/pub/repository/CLARIFY/DOCUMENT/2007/43/022954-01.pdf
    http://www14.software.ibm.com/webapp/set2/subscriptions/pqvcmjd?mode=18&ID=3975
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2154

    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