CVE-2015-5722

Updated bind packages fix security vulnerability:

Parsing a malformed DNSSEC key can cause a validating resolver to exit due to a failed assertion in buffer.c. It is possible for a remote attacker to deliberately trigger this condition, for example by using a query which requires a response from a zone containing a deliberately malformed key (CVE-2015-5722).

An incorrect boundary check in openpgpkey_61.c can cause named to terminate due to a REQUIRE assertion failure. This defect can be deliberately exploited by an attacker who can provide a maliciously constructed response in answer to a query (CVE-2015-5986).

These are all security issues fixed in the bind-9.10.3P4-21.1 package on the GA media of openSUSE Tumbleweed.

The nameserver bind was updated to fix a remote denial of service (crash) attack against bind nameservers doing validation on DNSSEC signed records. (CVE-2015-5722, bsc#944066).

The nameserver bind was updated to fix a remote denial of service (crash) attack against bind nameservers doing validation on DNSSEC signed records. (CVE-2015-5722, bsc#944066).

The nameserver bind was updated to fix a remote denial of service (crash) attack against bind nameservers doing validation on DNSSEC signed records. (CVE-2015-5722, bsc#944066).

buffer.c in named in ISC BIND 9.x before 9.9.7-P3 and 9.10.x before 9.10.2-P4 allows remote attackers to cause a denial of service (assertion failure and daemon exit) by creating a zone containing a malformed DNSSEC key and issuing a query for a name in that zone.

Hanno Böck discovered that Bind incorrectly handled certain malformed keys when configured to perform DNSSEC validation. A remote attacker could use this issue with specially crafted zone data to cause Bind to crash, resulting in a denial of service.