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upstream: require FIDO application strings to start with "ssh:"; ok

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OpenBSD-Commit-ID: 94e9c1c066d42b76f035a3d58250a32b14000afb
This commit is contained in:
djm@openbsd.org 2020-02-04 09:58:04 +00:00 committed by Damien Miller
parent 501f358243
commit d596b1d30d
2 changed files with 9 additions and 3 deletions
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6
ssh-keygen.1
View File

@ -1,4 +1,4 @@
.\" $OpenBSD: ssh-keygen.1,v 1.199 2020/02/03 08:15:37 jmc Exp $ .\" $OpenBSD: ssh-keygen.1,v 1.200 2020/02/04 09:58:04 djm Exp $
.\" .\"
.\" Author: Tatu Ylonen <ylo@cs.hut.fi> .\" Author: Tatu Ylonen <ylo@cs.hut.fi>
.\" Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland .\" Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -35,7 +35,7 @@
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\" .\"
.Dd $Mdocdate: February 3 2020 $ .Dd $Mdocdate: February 4 2020 $
.Dt SSH-KEYGEN 1 .Dt SSH-KEYGEN 1
.Os .Os
.Sh NAME .Sh NAME
@ -472,6 +472,8 @@ Those supported at present are:
Override the default FIDO application/origin string of Override the default FIDO application/origin string of
.Dq ssh: . .Dq ssh: .
This may be useful when generating host or domain-specific resident keys. This may be useful when generating host or domain-specific resident keys.
The specified application string must begin with
.Dq ssh: .
.It Cm challenge Ns = Ns Ar path .It Cm challenge Ns = Ns Ar path
Specifies a path to a challenge string that will be passed to the Specifies a path to a challenge string that will be passed to the
FIDO token during key generation. FIDO token during key generation.

6
ssh-keygen.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: ssh-keygen.c,v 1.395 2020/01/28 08:01:34 djm Exp $ */ /* $OpenBSD: ssh-keygen.c,v 1.396 2020/02/04 09:58:04 djm Exp $ */
/* /*
* Author: Tatu Ylonen <ylo@cs.hut.fi> * Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland * Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -3572,6 +3572,10 @@ main(int argc, char **argv)
} else if (strncasecmp(opts[i], } else if (strncasecmp(opts[i],
"application=", 12) == 0) { "application=", 12) == 0) {
sk_application = xstrdup(opts[i] + 12); sk_application = xstrdup(opts[i] + 12);
if (strncmp(sk_application, "ssh:", 4) != 0) {
fatal("FIDO application string must "
"begin with \"ssh:\"");
}
} else { } else {
fatal("Option \"%s\" is unsupported for " fatal("Option \"%s\" is unsupported for "
"FIDO authenticator enrollment", opts[i]); "FIDO authenticator enrollment", opts[i]);