From Upstream Release notes:
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]
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]
- Use more recent kyua, upstream bind now requires parallelism.
- Make global so version variables for libraries with multiple builds.
Signed-off-by: Petr Menšík <pemensik@redhat.com>
