JPCERT-AT-2016-0013
                                                             JPCERT/CC
                                                            2016-03-10

                  <<< JPCERT/CC Alert 2016-03-10 >>>

Alert on denial-of-service vulnerability (CVE-2016-1286) in ISC BIND 9

      https://www.jpcert.or.jp/english/at/2016/at160013.html


I. Overview

  ISC BIND 9 contains a vulnerability that leads to denial-of-service (DoS).
When this vulnerability is leveraged, a remote attacker may cause an 
abnormal termination of named.

    Internet Systems Consortium, Inc. (ISC)
    CVE-2016-1286: A problem parsing resource record signatures for DNAME resource records can lead to an assertion failure in resolver.c or db.c
    https://kb.isc.org/article/AA-01353

  If operating an affected version of ISC BIND 9 (authoritative DNS 
server, cache DNS server), please consider updating to a version that
addresses this vulnerability after referring to the information in 
"III. Solution".


II. Affected Systems

  According to the information provided by ISC, the following versions
are affected by this vulnerability. ISC has rated this vulnerability as
"High"

  ISC BIND
    - Versions from 9.9.0 to 9.9.8-P3
    - Versions from 9.10.0 to 9.10.3-P3

  Unsupported versions of ISC BIND 9.0.x through 9.8.x are also affected
by this vulnerability. For more details, refer to the following:

    BIND 9 Security Vulnerability Matrix
    https://kb.isc.org/article/AA-00913/

  If you are using BIND provided by a distributor, refer to the
information provided by that distributor.


III. Solution

  ISC has released versions of ISC BIND that address this vulnerability.
Distributors are likely to provide their own versions that address this
vulnerability. Consider updating to an updated version after thorough
testing.

  Versions that address this vulnerability are as follows:

  ISC BIND
  - BIND 9 version 9.9.8-P4
  - BIND 9 version 9.10.3-P4


IV. References

    US-CERT
    Internet Systems Consortium (ISC) Releases Security Updates for BIND
    https://www.us-cert.gov/ncas/current-activity/2016/03/09/ISC-Releases-Security-Updates-BIND

    Japan Registry Services (JPRS)
    (Urgent) Vulnerability in BIND 9.X (DNS Service suspension) (CVE-2016-1286) (Released 3/10/2016)(Japanese)
    https://jprs.jp/tech/security/2016-03-10-bind9-vuln-rrsig.html


If you have any information regarding this alert, please contact
JPCERT/CC.

======================================================================
JPCERT Coordination Center (JPCERT/CC)
MAIL: info@jpcert.or.jp
TEL: +81-3-3518-4600  FAX: +81-3-3518-4602
https://www.jpcert.or.jp/english/