Security Alert (A15-12-06): Multiple Vulnerabilities in ISC BIND

Description:

Multiple vulnerabilities are found in the ISC BIND software. A remote attacker could send a specially crafted query to request a record with malformed class attribute to trigger REQUIRE assertion failure, causing a denial-of-service condition. In addition, a flaw was found which can cause the BIND to exit after encountering an INSIST assertion failure.

Both authoritative and recursive name servers are vulnerable to these problems.

Affected Systems:

• BIND 9.0.x to 9.9.8 -P1
• BIND 9.10.0 to 9.10.3-P1

Impact:

Successful exploitation could lead to a denial of service (DoS) condition on an affected system.

Recommendation:

Internet Systems Consortium (ISC) has released the following patches to solve the problems:

• BIND 9.9.8-P2 and 9.10.3-P2
  http://www.isc.org/downloads/

Users of affected systems should follow the recommendations provided by the product vendor and take immediate actions to mitigate the risk.

More Information:

https://kb.isc.org/article/AA-01317
https://kb.isc.org/article/AA-01319
https://www.us-cert.gov/ncas/current-activity/2015/12/15/Internet-Systems-Consortium-ISC-Releases-Security-Updates-BIND
https://www.hkcert.org/my_url/en/alert/15121602
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8000
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8461