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-rw-r--r--source3/libads/kerberos.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/source3/libads/kerberos.c b/source3/libads/kerberos.c
index b586d84226..bef2febaef 100644
--- a/source3/libads/kerberos.c
+++ b/source3/libads/kerberos.c
@@ -40,8 +40,12 @@ kerb_prompter(krb5_context ctx, void *data,
memset(prompts[0].reply->data, 0, prompts[0].reply->length);
if (prompts[0].reply->length > 0) {
- strncpy(prompts[0].reply->data, data, prompts[0].reply->length-1);
- prompts[0].reply->length = strlen(prompts[0].reply->data);
+ if (data) {
+ strncpy(prompts[0].reply->data, data, prompts[0].reply->length-1);
+ prompts[0].reply->length = strlen(prompts[0].reply->data);
+ } else {
+ prompts[0].reply->length = 0;
+ }
}
return 0;
}