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Date: Tue, 19 May 2020 01:16:04 -0800
From: ISC Security Officer <>
Cc: "" <>
Subject: Two vulnerabilities disclosed in BIND (CVE-2020-8616 and

On May 19, 2020, Internet Systems Consortium have disclosed two
vulnerabilities in our BIND 9 software:

   CVE-2020-8616: BIND does not sufficiently limit the number
   of fetches performed when processing referrals

   CVE-2020-8617: A logic error in code which checks TSIG
   validity can be used to trigger an assertion failure in tsig.c

With the public announcement of these vulnerabilities, the embargo
period is ended and any updated software packages that have been
prepared may be released.

ISC's own releases containing fixes are:

   -  BIND 9.11.19
   -  BIND 9.14.12
   -  BIND 9.16.3

each of which can be downloaded via the ISC downloads page,

For package maintainers who want *only* the fixes for the
CVE vulnerabilities, patch diffs are available for each branch
in the "patches" subdirectory of the branch's May 2020
maintenance release, e.g.:

  9.11 branch:
  9.14 branch:
  9.16 branch:


Michael McNally
ISC Security Officer

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