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CVE-2009-3602

Status Candidate

Overview

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.

Related Files

Debian Linux Security Advisory 1963-1
Posted Dec 29, 2009
Authored by Debian | Site debian.org

Debian Linux Security Advisory 1963-1 - It was discovered that Unbound, a DNS resolver, does not properly check cryptographic signatures on NSEC3 records. As a result, zones signed with the NSEC3 variant of DNSSEC lose their cryptographic protection. (An attacker would still have to carry out an ordinary cache poisoning attack to add bad data to the cache.)

tags | advisory
systems | linux, debian
advisories | CVE-2009-3602
SHA-256 | 64ef176099b8262837d676a3c9b973cf330090a6d1284bcfb9809a6efb0ccba4
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