From c192315eb5b4282d3d17ca79f4a07152e21c3fb4 Mon Sep 17 00:00:00 2001
From: Christian Hitz <christian.hitz@bbv.ch>
Date: Wed, 27 Mar 2024 13:02:50 +0100
Subject: [PATCH] rfbEncryptAndStorePasswd: fail if encryption fails

---
 src/common/vncauth.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/common/vncauth.c b/src/common/vncauth.c
index c3f318c3a..5ef3c5aab 100644
--- a/src/common/vncauth.c
+++ b/src/common/vncauth.c
@@ -102,7 +102,10 @@ rfbEncryptAndStorePasswd(char *passwd, char *fname)
 
     /* Do encryption in-place - this way we overwrite our copy of the plaintext
        password */
-    encrypt_rfbdes(encryptedPasswd, &out_len, fixedkey, encryptedPasswd, sizeof(encryptedPasswd));
+    if (encrypt_rfbdes(encryptedPasswd, &out_len, fixedkey, encryptedPasswd, sizeof(encryptedPasswd)) == 0) {
+	fclose(fp);
+	return 1;
+    }
 
     for (i = 0; i < 8; i++) {
 	putc(encryptedPasswd[i], fp);