CVE-2009-3602 Information

Description

Unbound before 1.3.4 does not properly verify signatures for NSEC3 records which allows remote attackers to cause secure delegations to be downgraded via DNS spoofing or other DNS-related attacks in conjunction with crafted delegation responses.

Reference

http://osvdb.org/58836 http://secunia.com/advisories/36996 http://secunia.com/advisories/37913 http://unbound.net/pipermail/unbound-users/2009-October/000852.html http://www.debian.org/security/2009/dsa-1963 http://www.openwall.com/lists/oss-security/2009/10/09/2 http://www.openwall.com/lists/oss-security/2009/10/09/3 http://www.vupen.com/english/advisories/2009/2875 https://exchange.xforce.ibmcloud.com/vulnerabilities/53729