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CVE-2016-2776, CVE-2016-2848, CVE-2016-9147, CVE-2016-8864: Denial of service flaws found in BIND. (Bug #278513)

Product
SteelHead (Appliance)
Fixed in Version:
steelhead 9.2.2, steelhead 9.6.0
Last Modified:
2017-10-09
Summary
DETAILS:

The following apply to the version of BIND in client use (not server use with the caching name server feature).

- A denial of service flaw was found in the way BIND constructed a response to a query that met certain criteria. A remote attacker could use this flaw to make named exit unexpectedly with an assertion failure via a specially crafted DNS request packet. (CVE-2016-2776)

- A denial of service flaw was found in the way BIND handled a query response containing inconsistent DNSSEC information. A remote attacker could use this flaw to make named exit unexpectedly with an assertion failure via a specially crafted DNS response. (CVE-2016-9147)

- A denial of service flaw was found in the way BIND handled responses containing a DNAME answer. A remote attacker could use this flaw to make named exit unexpectedly with an assertion failure via a specially crafted DNS response. (CVE-2016-8864)

- A denial of service flaw was found in the way BIND handled packets with malformed options. A remote attacker could use this flaw to make named exit unexpectedly with an assertion failure via a specially crafted DNS packet.  (CVE-2016-2848)

FIX:

Upgraded to a version of BIND for client use with these fixes.

RECOMMENDATION:

Upgrade to a software version with this fix.