- djm@cvs.openbsd.org 2014/02/26 20:28:44

     [auth2-gss.c gss-serv.c ssh-gss.h sshd.c]
     bz#2107 - cache OIDs of supported GSSAPI mechanisms before privsep
     sandboxing, as running this code in the sandbox can cause violations;
     ok markus@

1 files changed, 20 insertions, 1 deletions

diff --git a/gss-serv.c b/gss-serv.c
index b61e6e140..e61b37bec 100644
--- a/gss-serv.c
+++ b/gss-serv.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: gss-serv.c,v 1.25 2014/02/02 03:44:31 djm Exp $ */
+/* $OpenBSD: gss-serv.c,v 1.26 2014/02/26 20:28:44 djm Exp $ */
 
 /*
  * Copyright (c) 2001-2003 Simon Wilkinson. All rights reserved.
@@ -66,6 +66,25 @@ ssh_gssapi_mech* supported_mechs[]= {
         &gssapi_null_mech,
 };
 
+/*
+ * ssh_gssapi_supported_oids() can cause sandbox violations, so prepare the
+ * list of supported mechanisms before privsep is set up.
+ */
+static gss_OID_set supported_oids;
+
+void
+ssh_gssapi_prepare_supported_oids(void)
+{
+        ssh_gssapi_supported_oids(&supported_oids);
+}
+
+OM_uint32
+ssh_gssapi_test_oid_supported(OM_uint32 *ms, gss_OID member, int *present)
+{
+        if (supported_oids == NULL)
+                ssh_gssapi_prepare_supported_oids();
+        return gss_test_oid_set_member(ms, member, supported_oids, present);
+}
 
 /*
  * Acquire credentials for a server running on the current host.