Bind/named : security advisory

[visser]

Het is weer update tijd ...

https://kb.isc.org/article/AA-01078

CVE-2014-0591: A Crafted Query Against an NSEC3-signed Zone Can Crash BIND

CVE: CVE-2014-0591
Document Version: 2.0
Posting date: 13 Jan 2014
Program Impacted: BIND
Versions affected: 9.6.0.x -> 9.6-ESV-R10-P1, 9.7 (all versions), 9.8.0 -> 9.8.6-P1, 9.9.0 -> 9.9.4-P1. Development releases 9.6-ESV-R11b1, 9.8.7b1, and 9.9.5b1 are also affected.
Severity: High
Exploitable: Remotely

Description:

Because of a defect in handling queries for NSEC3-signed zones, BIND can crash with an "INSIST" failure in name.c when processing queries possessing certain properties. By exploiting this defect an attacker deliberately constructing a query with the right properties could achieve denial of service against an authoritative nameserver serving NSEC3-signed zones.

Please Note: Versions of BIND 9.7 are also affected, but this branch is beyond its "end of life" (EOL) and no longer receives testing or security fixes from ISC. For current information on which versions are actively supported, please see http://www.isc.org/downloads/softwar...ftware-status/.

Impact:

Authoritative nameservers serving at least one NSEC3-signed zone are vulnerable to this defect. Recursive-only servers are not at risk. Authoritative servers which do not serve NSEC3-signed zones are not at risk.

[dreamhost_nl]

Recursive-only servers are not at risk. Authoritative servers which do not serve NSEC3-signed zones are not at risk.

Ik denk niet dat velen van ons er hierdoor last van zullen ondervinden.