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upstream commit 

restrict monitor auth calls to be allowed only when their
respective authentication methods are enabled in the configuration.

prompted by Solar Designer; ok markus dtucker

Upstream-ID: 6eb3f89332b3546d41d6dbf5a8e6ff920142b553
This commit is contained in:
djm@openbsd.org 2016-08-30 07:50:21 +00:00 committed by Damien Miller
parent b38b95f5bc
commit 7fd0ea8a1d
1 changed files with 19 additions and 1 deletions
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20
monitor.c
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@ -1,4 +1,4 @@
/* $OpenBSD: monitor.c,v 1.163 2016/08/19 03:18:06 djm Exp $ */
/* $OpenBSD: monitor.c,v 1.164 2016/08/30 07:50:21 djm Exp $ */
/*
* Copyright 2002 Niels Provos <provos@citi.umich.edu>
* Copyright 2002 Markus Friedl <markus@openbsd.org>
@ -844,6 +844,8 @@ mm_answer_authpassword(int sock, Buffer *m)
int authenticated;
u_int plen;
if (!options.password_authentication)
fatal("%s: password authentication not enabled", __func__);
passwd = buffer_get_string(m, &plen);
/* Only authenticate if the context is valid */
authenticated = options.password_authentication &&
@ -880,6 +882,8 @@ mm_answer_bsdauthquery(int sock, Buffer *m)
char **prompts;
u_int success;
if (!options.kbd_interactive_authentication)
fatal("%s: kbd-int authentication not enabled", __func__);
success = bsdauth_query(authctxt, &name, &infotxt, &numprompts,
&prompts, &echo_on) < 0 ? 0 : 1;
@ -907,6 +911,8 @@ mm_answer_bsdauthrespond(int sock, Buffer *m)
char *response;
int authok;
if (!options.kbd_interactive_authentication)
fatal("%s: kbd-int authentication not enabled", __func__);
if (authctxt->as == NULL)
fatal("%s: no bsd auth session", __func__);
@ -1716,6 +1722,9 @@ mm_answer_gss_setup_ctx(int sock, Buffer *m)
OM_uint32 major;
u_int len;
if (!options.gss_authentication)
fatal("%s: GSSAPI authentication not enabled", __func__);
goid.elements = buffer_get_string(m, &len);
goid.length = len;
@ -1743,6 +1752,9 @@ mm_answer_gss_accept_ctx(int sock, Buffer *m)
OM_uint32 flags = 0; /* GSI needs this */
u_int len;
if (!options.gss_authentication)
fatal("%s: GSSAPI authentication not enabled", __func__);
in.value = buffer_get_string(m, &len);
in.length = len;
major = ssh_gssapi_accept_ctx(gsscontext, &in, &out, &flags);
@ -1771,6 +1783,9 @@ mm_answer_gss_checkmic(int sock, Buffer *m)
OM_uint32 ret;
u_int len;
if (!options.gss_authentication)
fatal("%s: GSSAPI authentication not enabled", __func__);
gssbuf.value = buffer_get_string(m, &len);
gssbuf.length = len;
mic.value = buffer_get_string(m, &len);
@ -1797,6 +1812,9 @@ mm_answer_gss_userok(int sock, Buffer *m)
{
int authenticated;
if (!options.gss_authentication)
fatal("%s: GSSAPI authentication not enabled", __func__);
authenticated = authctxt->valid && ssh_gssapi_userok(authctxt->user);
buffer_clear(m);