unbound - several

2011-12-2200:00:00

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It was discovered that Unbound, a recursive DNS resolver, would crash
when processing certain malformed DNS responses from authoritative DNS
servers, leading to denial of service.

CVE-2011-4528
Unbound attempts to free unallocated memory during processing
of duplicate CNAME records in a signed zone.
CVE-2011-4869
Unbound does not properly process malformed responses which
lack expected NSEC3 records.

For the oldstable distribution (lenny), these problems have been fixed in
version 1.4.6-1~lenny2.

For the stable distribution (squeeze), these problems have been fixed in
version 1.4.6-1+squeeze2.

For the testing distribution (wheezy) and the unstable distribution
(sid), these problems have been fixed in version 1.4.14-1.

We recommend that you upgrade your unbound packages.