Notes for BIND 9.16.2
Security Fixes
DNS rebinding protection was ineffective when BIND 9 is configured as a forwarding DNS server. Found and responsibly reported by Tobias Klein. [GL #1574]
Known Issues
We have received reports that in some circumstances, receipt of an IXFR can cause the processing of queries to slow significantly. Some of these were related to RPZ processing, which has been fixed in this release (see below). Others appear to occur where there are NSEC3-related changes (such as an operator changing the NSEC3 salt used in the hash calculation). These are being investigated. [GL #1685]
Feature Changes
The previous DNSSEC sign statistics used lots of memory. The number of keys to track is reduced to four per zone, which should be enough for 99% of all signed zones. [GL #1179]
Bug Fixes
When an RPZ policy zone was updated via zone transfer and a large number of records was deleted, named could become nonresponsive for a short period while deleted names were removed from the RPZ summary database. This database cleanup is now done incrementally over a longer period of time, reducing such delays. [GL #1447]
When trying to migrate an already-signed zone from auto-dnssec maintain to one based on dnssec-policy, the existing keys were immediately deleted and replaced with new ones. As the key rollover timing constraints were not being followed, it was possible that some clients would not have been able to validate responses until all old DNSSEC information had timed out from caches. BIND now looks at the time metadata of the existing keys and incorporates it into its DNSSEC policy operation. [GL #1706]
Updated from 9.14 to 9.16.1.
Disabled SIGCHASE, since it no longer exists.
Disabled PKCS11 native build for now
Disabled EXPORT_LIBS
No longer ships isc-config.sh, missing it.
Unlike other build dependencies, no public headers include from
libmaxminddb any symbols. That means no build would ever fail
if libmaxminddb-devel package is not installed. Do not require it when
installing bind-lite-devel but keep the requirement when building from
sources.
Has to be enabled in build by --with TSAN.
Would make build fail unit tests and print many warnings about possible
race conditions. Not useful for production build, but useful for
debugging thread related problems in system tests.
It might not fix all issues, but was detected by upstream using
automated tool. Should not break anything new, but might fix issue
triggered usually on ppc64le platform.
Previous fix included just part inside named. However, checking part
would check algorithm support also in check library. The code is almost
the same. Permit already disabled algoritms also in libbind9.
Use the same change as RHEL.
Return failed status code to command. Not only report error message to
the log, but also report reload success. Must not terminate running
service on failed reload.
