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VuXML IDDescription
0bc67930-d5c3-11e1-bef6-0024e81297aedns/bind9* -- Heavy DNSSEC Validation Load Can Cause a 'Bad Cache' Assertion Failure

ISC reports:

High numbers of queries with DNSSEC validation enabled can cause an assertion failure in named, caused by using a 'bad cache' data structure before it has been initialized.

BIND 9 stores a cache of query names that are known to be failing due to misconfigured name servers or a broken chain of trust. Under high query loads when DNSSEC validation is active, it is possible for a condition to arise in which data from this cache of failing queries could be used before it was fully initialized, triggering an assertion failure.

This bug cannot be encountered unless your server is doing DNSSEC validation.


Discovery 2012-07-24
Entry 2012-07-24
bind99
< 9.9.1.2

bind98
< 9.8.3.2

bind97
< 9.7.6.2

bind96
< 9.6.3.1.ESV.R7.2

CVE-2012-3817
https://kb.isc.org/article/AA-00729
1e1421f0-8d6f-11e0-89b4-001ec9578670BIND -- Large RRSIG RRsets and Negative Caching DoS

ISC reports:

A BIND 9 DNS server set up to be a caching resolver is vulnerable to a user querying a domain with very large resource record sets (RRSets) when trying to negatively cache a response. This can cause the BIND 9 DNS server (named process) to crash.


Discovery 2011-05-26
Entry 2011-06-04
Modified 2016-08-09
bind9-sdb-ldap
bind9-sdb-postgresql
< 9.4.3.4

bind96
< 9.6.3.1.ESV.R4.1

bind97
< 9.7.3.1

bind98
< 9.8.0.2

FreeBSD
ge 7.3 lt 7.3_6

ge 7.4 lt 7.4_2

ge 8.1 lt 8.1_4

ge 8.2 lt 8.2_2

CVE-2011-1910
SA-11:02.bind
http://www.isc.org/software/bind/advisories/cve-2011-1910
fd64188d-a71d-11e0-89b4-001ec9578670BIND -- Remote DoS against authoritative and recursive servers

ISC reports:

A defect in the affected BIND 9 versions allows an attacker to remotely cause the "named" process to exit using a specially crafted packet.

This defect affects both recursive and authoritative servers.


Discovery 2011-07-05
Entry 2011-07-05
bind96
< 9.6.3.1.ESV.R4.3

bind97
< 9.7.3.3

bind98
< 9.8.0.4

CVE-2011-2464
https://www.isc.org/software/bind/advisories/cve-2011-2464
53a0ddef-0208-11e2-8afa-0024e830109bdns/bind9* -- Several vulnerabilities

ISC reports:

Prevents a crash when queried for a record whose RDATA exceeds 65535 bytes.

Prevents a crash when validating caused by using "Bad cache" data before it has been initialized.

ISC_QUEUE handling for recursive clients was updated to address a race condition that could cause a memory leak. This rarely occurred with UDP clients, but could be a significant problem for a server handling a steady rate of TCP queries.

A condition has been corrected where improper handling of zero-length RDATA could cause undesirable behavior, including termination of the named process.


Discovery 2012-09-12
Entry 2012-09-18
bind99
< 9.9.1.3

bind98
< 9.8.3.3

bind97
< 9.7.6.3

bind96
< 9.6.3.1.ESV.R7.3


90cc1494-10ac-11e1-b3ec-0024e830109bBIND -- Remote DOS

The Internet Systems Consortium reports:

Organizations across the Internet reported crashes interrupting service on BIND 9 nameservers performing recursive queries. Affected servers crashed after logging an error in query.c with the following message: "INSIST(! dns_rdataset_isassociated(sigrdataset))" Multiple versions were reported being affected, including all currently supported release versions of ISC BIND 9.

Because it may be possible to trigger this bug even on networks that do not allow untrusted users to access the recursive name servers (perhaps via specially crafted e-mail messages, and/or malicious web sites) it is recommended that ALL operators of recursive name servers upgrade immediately.


Discovery 2011-11-16
Entry 2011-11-16
Modified 2012-01-29
FreeBSD
ge 7.3 lt 7.3_9

ge 7.4 lt 7.4_5

ge 8.1 lt 8.1_7

ge 8.2 lt 8.2_5

bind96
< 9.6.3.1.ESV.R5.1

bind97
< 9.7.4.1

bind98
< 9.8.1.1

SA-11:06.bind
CVE-2011-4313
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4313
https://www.isc.org/software/bind/advisories/cve-2011-4313
1ecc0d3f-ae8e-11e1-965b-0024e88a8c98dns/bind9* -- zero-length RDATA can cause named to terminate, reveal memory

ISC reports:

Processing of DNS resource records where the rdata field is zero length may cause various issues for the servers handling them.

Processing of these records may lead to unexpected outcomes. Recursive servers may crash or disclose some portion of memory to the client. Secondary servers may crash on restart after transferring a zone containing these records. Master servers may corrupt zone data if the zone option "auto-dnssec" is set to "maintain". Other unexpected problems that are not listed here may also be encountered.

Impact: This issue primarily affects recursive nameservers. Authoritative nameservers will only be impacted if an administrator configures experimental record types with no data. If the server is configured this way, then secondaries can crash on restart after transferring that zone. Zone data on the master can become corrupted if the zone with those records has named configured to manage the DNSSEC key rotation.


Discovery 2012-06-04
Entry 2012-06-04
Modified 2012-06-06
bind99
< 9.9.1.1

bind98
< 9.8.3.1

bind97
< 9.7.6.1

bind96
< 9.6.3.1.ESV.R7.1

CVE-2012-1667
http://www.isc.org/software/bind/advisories/cve-2012-1667
57a700f9-12c0-11e2-9f86-001d923933b6dns/bind9* -- crash on deliberately constructed combination of records

ISC reports:

A deliberately constructed combination of records could cause named to hang while populating the additional section of a response.


Discovery 2012-09-26
Entry 2012-10-10
bind99
< 9.9.1.4

bind99-base
< 9.9.1.4

bind98
< 9.8.3.4

bind98-base
< 9.8.3.4

bind97
< 9.7.6.4

bind97-base
< 9.7.6.4

bind96
< 9.6.3.1.ESV.R7.4

bind96-base
< 9.6.3.1.ESV.R7.4

CVE-2012-5166