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authorEd Maste <emaste@FreeBSD.org>2023-02-17 01:26:41 +0000
committerEd Maste <emaste@FreeBSD.org>2023-03-01 14:19:07 +0000
commit41ff5ea22cb95deb9e7415510eb2f5f00b91537a (patch)
treee2281a253f5851de6914aa02ffc7fa4d11fada15
parent71af885af9c86a900beec09d98fb9d305c303744 (diff)
downloadsrc-41ff5ea22cb9.tar.gz
src-41ff5ea22cb9.zip
ssh: default VerifyHostKeyDNS to no, following upstream
Revert to upstream's default. Using VerifyHostKeyDNS may depend on a trusted nameserver and network path. This reverts commit 83c6a5242c80160fff76fb85454938761645b0c4. Reported by: David Leadbeater, G-Research Reviewed by: gordon Relnotes: Yes Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D38648
-rw-r--r--crypto/openssh/FREEBSD-upgrade1
-rw-r--r--crypto/openssh/readconf.c6
-rw-r--r--crypto/openssh/ssh_config1
-rw-r--r--crypto/openssh/ssh_config.55
4 files changed, 1 insertions, 12 deletions
diff --git a/crypto/openssh/FREEBSD-upgrade b/crypto/openssh/FREEBSD-upgrade
index bc1122768790..92abda1d0e4c 100644
--- a/crypto/openssh/FREEBSD-upgrade
+++ b/crypto/openssh/FREEBSD-upgrade
@@ -122,7 +122,6 @@
We've modified some configuration defaults in ssh:
- CheckHostIP defaults to "no".
- - VerifyHostKeyDNS defaults to "yes" if built with LDNS.
3) Canonic host names
diff --git a/crypto/openssh/readconf.c b/crypto/openssh/readconf.c
index bbf03c8d953f..9ade0ffa0641 100644
--- a/crypto/openssh/readconf.c
+++ b/crypto/openssh/readconf.c
@@ -2592,14 +2592,8 @@ fill_default_options(Options * options)
options->rekey_limit = 0;
if (options->rekey_interval == -1)
options->rekey_interval = 0;
-#if HAVE_LDNS
- if (options->verify_host_key_dns == -1)
- /* automatically trust a verified SSHFP record */
- options->verify_host_key_dns = 1;
-#else
if (options->verify_host_key_dns == -1)
options->verify_host_key_dns = 0;
-#endif
if (options->server_alive_interval == -1)
options->server_alive_interval = 0;
if (options->server_alive_count_max == -1)
diff --git a/crypto/openssh/ssh_config b/crypto/openssh/ssh_config
index 306e8f950efd..1eb1c00632b0 100644
--- a/crypto/openssh/ssh_config
+++ b/crypto/openssh/ssh_config
@@ -44,4 +44,3 @@
# ProxyCommand ssh -q -W %h:%p gateway.example.com
# RekeyLimit 1G 1h
# UserKnownHostsFile ~/.ssh/known_hosts.d/%k
-# VerifyHostKeyDNS yes
diff --git a/crypto/openssh/ssh_config.5 b/crypto/openssh/ssh_config.5
index 153dd9ea4ed8..7c24e12dfdee 100644
--- a/crypto/openssh/ssh_config.5
+++ b/crypto/openssh/ssh_config.5
@@ -1991,10 +1991,7 @@ need to confirm new host keys according to the
.Cm StrictHostKeyChecking
option.
The default is
-.Cm yes
-if compiled with LDNS and
-.Cm no
-otherwise.
+.Cm no .
.Pp
See also
.Sx VERIFYING HOST KEYS