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Assorted security improvements

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We should consider using a stronger RSA key as well.
This commit is contained in:
Tux 2016-12-21 04:09:09 -05:00
parent 6fc2170f21
commit 41ec1b302a
1 changed files with 32 additions and 0 deletions
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32
BungeeCord-Patches/0041-Security-enhancements-for-EncryptionUtil.patch Normal file
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@ -0,0 +1,32 @@
From 55ff4996e61c50acad85f3e3609c6563e2acc3ee Mon Sep 17 00:00:00 2001
From: Tux <write@imaginarycode.com>
Date: Wed, 21 Dec 2016 04:07:26 -0500
Subject: [PATCH] Security enhancements for EncryptionUtil
Use a constant-time comparison in getSecret() and use SecureRandom for EncryptionRequest.
diff --git a/proxy/src/main/java/net/md_5/bungee/EncryptionUtil.java b/proxy/src/main/java/net/md_5/bungee/EncryptionUtil.java
index 871e4ad..622a21d 100644
--- a/proxy/src/main/java/net/md_5/bungee/EncryptionUtil.java
+++ b/proxy/src/main/java/net/md_5/bungee/EncryptionUtil.java
@@ -27,7 +27,7 @@ import net.md_5.bungee.protocol.packet.EncryptionRequest;
public class EncryptionUtil
{
- private static final Random random = new Random();
+ private static final Random random = new java.security.SecureRandom(); // Waterfall - use SecureRandom
public static final KeyPair keys;
@Getter
private static final SecretKey secret = new SecretKeySpec( new byte[ 16 ], "AES" );
@@ -61,7 +61,7 @@ public class EncryptionUtil
cipher.init( Cipher.DECRYPT_MODE, keys.getPrivate() );
byte[] decrypted = cipher.doFinal( resp.getVerifyToken() );
- if ( !Arrays.equals( request.getVerifyToken(), decrypted ) )
+ if ( !java.security.MessageDigest.isEqual( request.getVerifyToken(), decrypted ) ) // Waterfall - use constant-time comparison
{
throw new IllegalStateException( "Key pairs do not match!" );
}
--
2.7.4