CVE-2007-2926

ISC BIND <9.5.0a5 - Info Disclosure

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2007-2926. PoCs published by posedge.

AI-analyzed exploit summary This exploit demonstrates DNS cache poisoning by predicting transaction IDs in BIND 9 DNS servers. It implements a DNS server that responds to queries and attempts to predict the next transaction ID based on the LFSR algorithm described in Amit Klein's paper.

Description

ISC BIND 9 through 9.5.0a5 uses a weak random number generator during generation of DNS query ids when answering resolver questions or sending NOTIFY messages to slave name servers, which makes it easier for remote attackers to guess the next query id and perform DNS cache poisoning.

Exploits (1)

exploitdb WORKING POC VERIFIED
by posedge · pythonremotemultiple
https://www.exploit-db.com/exploits/4266

This exploit demonstrates DNS cache poisoning by predicting transaction IDs in BIND 9 DNS servers. It implements a DNS server that responds to queries and attempts to predict the next transaction ID based on the LFSR algorithm described in Amit Klein's paper.

Classification
Working Poc 90%
Attack Type
Other
Complexity
Moderate
Reliability
Theoretical
Target: BIND 9.0.0-9.4.1
No auth needed
Prerequisites: Network access to a vulnerable BIND DNS server · Ability to send and receive UDP packets on port 53
mistral-large-3 · analyzed Feb 16, 2026 Full analysis →

References (67)

Core 67
Core References
Various Sources x_refsource_misc
http://www.trusteer.com/docs/bind9dns_s.html
Various Sources x_refsource_misc
http://www.trusteer.com/docs/bind9dns.html
Vendor Advisory vendor-advisory x_refsource_trustix
http://www.trustix.org/errata/2007/0023/
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/35575
Vendor Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/usn-491-1
Issue Tracking x_refsource_confirm
https://issues.rpath.com/browse/RPL-1587
Various Sources x_refsource_confirm
http://www.isc.org/index.pl?/sw/bind/bind-security.php
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26231
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2007/2932
Mailing List vendor-advisory x_refsource_hp
http://marc.info/?l=bugtraq&m=141879471518471&w=2
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26847
Various Sources vendor-advisory x_refsource_aixapar
http://www-1.ibm.com/support/search.wss?rs=0&q=IZ02218&apar=only
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2007/2914
Vendor Advisory vendor-advisory x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2007-0740.html
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26217
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26509
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/26444
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26605
Vendor Advisory vendor-advisory x_refsource_sunalert
http://sunsolve.sun.com/search/document.do?assetkey=1-26-103018-1
Vendor Advisory vendor-advisory x_refsource_mandriva
http://www.mandriva.com/security/advisories?name=MDKSA-2007:149
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26607
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/474856/100/0/threaded
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26148
Various Sources vendor-advisory x_refsource_freebsd
http://security.freebsd.org/advisories/FreeBSD-SA-07:07.bind.asc
US Government Resource third-party-advisory x_refsource_cert-vn
http://www.kb.cert.org/vuls/id/252735
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26180
Third Party Advisory vendor-advisory x_refsource_gentoo
http://www.gentoo.org/security/en/glsa/glsa-200708-13.xml
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26152
Mailing List vendor-advisory x_refsource_apple
http://lists.apple.com/archives/security-announce/2007/Nov/msg00002.html
Vendor Advisory x_refsource_confirm
http://docs.info.apple.com/article.html?artnum=307041
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/474516/100/0/threaded
Various Sources vendor-advisory x_refsource_aixapar
http://www-1.ibm.com/support/search.wss?rs=0&q=IZ02219&apar=only
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2007/2782
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26227
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26261
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2007/3868
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/25037
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26515
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26330
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id?1018442
Vendor Advisory vendor-advisory x_refsource_sgi
ftp://patches.sgi.com/support/free/security/advisories/20070801-01-P.asc
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2007/dsa-1341
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26308
Vendor Advisory vendor-advisory x_refsource_suse
http://www.novell.com/linux/security/advisories/2007_47_bind.html
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2007/2627
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2226
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/27643
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26236
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2007/2662
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26195
Various Sources x_refsource_confirm
ftp://aix.software.ibm.com/aix/efixes/security/README
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2007/3242
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10293
Vendor Advisory vendor-advisory x_refsource_openpkg
http://www.openpkg.com/security/advisories/OpenPKG-SA-2007.022.html
US Government Resource third-party-advisory x_refsource_cert
http://www.us-cert.gov/cas/techalerts/TA07-319A.html
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26925
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26160
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/474545/100/0/threaded
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/474808/100/0/threaded
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/26531

Scores

EPSS 0.1309
EPSS Percentile 95.9%

Details

Status published
Products (7)
isc/bind 9.0
isc/bind 9.1
isc/bind 9.2
isc/bind 9.3
isc/bind 9.4
isc/bind 9.5
isc/bind 9.5.0
Published Jul 24, 2007
Tracked Since Feb 18, 2026