Resolves CVE-2021-25215 and CVE-2021-25214.
Removes disable-isc-spnego flag, because custom isc spnego code were
removed with also this flag. It is default (and the only) option now.
Reworked custom redhat version. Complete version is now part of library
names. Libraries are not recommended for any third party application.
They are still required for bind-dyndb-ldap only.
Version of named changed, only suffix -RH is appended to upstream
version. Therefore dig would not contain version
9.6.11-RedHat-9.6.11-1.fc34, but only 9.6.13-RH. Version of fedora build
have to be obtained from rpm -q bind.
Version is now part of library names, bind-libs-lite was merged to
bind-libs. bind-dyndb-ldap needs whole bind, no point to offer smaller
library set just for its dependencies.
Updated also named(8) manual page to match current state of SELinux.
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.
Few configuration and zone files were moved into tarball by commit
55b04de09a. It makes tracking of changes difficult, hardens rebases,
makes difficult building without proper lookaside cache. Those files are
tiny, no need to hold them inside compressed binary archive. Move them
out.
Replaces also few places with proper directory macros.
- Interaction between DNS64 and RPZ No Data rule (CNAME *.) could
cause unexpected results; this has been fixed. [GL #1106]
- named-checkconf now checks DNS64 prefixes
to ensure bits 64-71 are zero. [GL #1159]
- named-checkconf could crash during configuration
if configured to use "geoip continent" ACLs with
legacy GeoIP. [GL #1163]
- named-checkconf now correctly reports missing
dnstap-output option when
dnstap is set. [GL #1136
- Handle ETIMEDOUT error on connect() with a non-blocking
socket. [GL #1133]
Contains:
5244. [security] Fixed a race condition in dns_dispatch_getnext()
that could cause an assertion failure if a
significant number of incoming packets were
rejected. (CVE-2019-6471) [GL #942]
5241. [bug] Fix Ed448 private and public key ASN.1 prefix blobs.
[GL #225]
5237. [bug] Recurse to find the root server list with 'dig +trace'.
[GL #1028]
