constrain desired_output_len

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@20056 ec53bebd-3082-4978-b11e-865c3cabbd6b
2007-01-24 01:55:32 +00:00
parent 0fbbee95af
commit 4ebb3aace3
1 changed files with 5 additions and 0 deletions
--- a/lib/gssapi/krb5/prf.c
+++ b/lib/gssapi/krb5/prf.c
@@ -57,6 +57,11 @@ _gsskrb5_pseudo_random(OM_uint32 *minor_status,
 	return GSS_S_NO_CONTEXT;
    }

+    if (desired_output_len <= 0) {
+	*minor_status = 0;
+	return GSS_S_FAILURE;
+    }
+
    GSSAPI_KRB5_INIT (&context);

    switch(prf_key) {