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>> ISC BIND Unspecified Denial of Service and ANY Response Handling Vulnerabilities

Title : ISC BIND Unspecified Denial of Service and ANY Response Handling Vulnerabilities
VUPEN ID : VUPEN/ADV-2007-0349
CVE ID : CVE-2007-0493 - CVE-2007-0494
Rated as : Moderate Risk 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2007-01-25


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Two vulnerabilities have been identified in ISC BIND, which could be exploited by remote attackers to cause a denial of service.

The first issue is due to an unspecified error within the named daemon that dereferences a freed fetch context, which could be exploited by attackers to cause a vulnerable server to exit unexpectedly, creating a denial of service condition.

The second issue is due to an error when validating responses to type "*" (ANY) queries that return multiple RRsets in the answer, which could be exploited by attackers to cause a denial of service.

Affected Products

ISC BIND versions 9.2.x
ISC BIND versions 9.3.x
ISC BIND versions 9.4.x

Solution

Upgrade to BIND version 9.2.8, 9.3.4, or 9.4.0rc2 :
http://www.isc.org/index.pl?/sw/bind/

References

http://www.vupen.com/english/advisories/2007/0349
http://www.isc.org/sw/bind/view/?release=9.3.4
http://www.isc.org/sw/bind/view/?release=9.2.8
http://www.isc.org/sw/bind/view/?release=9.4.0rc2
http://sourceforge.net/project/shownotes.php?release_id=479999&group_id=110693

Credits

Vulnerabilities reported by the vendor

ChangeLog

2007-01-25 : Initial release

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