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CVE-2021-21290.patch 13.5 KiB
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From: Markus Koschany <apo@debian.org>
Date: Sun, 28 Mar 2021 14:56:13 +0200
Subject: CVE-2021-21290

Bug-Debian: https://bugs.debian.org/982580
Origin: https://github.com/netty/netty/commit/c735357bf29d07856ad171c6611a2e1a0e0000ec
---
 .../java/io/netty/buffer/AbstractByteBufTest.java    |  4 ++--
 .../buffer/ReadOnlyDirectByteBufferBufTest.java      |  2 +-
 .../codec/http/multipart/AbstractDiskHttpData.java   |  5 +++--
 .../handler/codec/http/HttpChunkedInputTest.java     |  3 ++-
 .../io/netty/util/internal/NativeLibraryLoader.java  |  2 +-
 .../io/netty/util/internal/PlatformDependent.java    | 20 ++++++++++++++++++++
 .../handler/ssl/util/SelfSignedCertificate.java      |  6 ++++--
 .../handler/stream/ChunkedWriteHandlerTest.java      |  3 ++-
 .../transport/socket/SocketFileRegionTest.java       |  2 +-
 .../java/io/netty/channel/epoll/EpollSpliceTest.java |  3 ++-
 .../io/netty/channel/unix/tests/UnixTestUtils.java   |  3 ++-
 11 files changed, 40 insertions(+), 13 deletions(-)

diff --git a/buffer/src/test/java/io/netty/buffer/AbstractByteBufTest.java b/buffer/src/test/java/io/netty/buffer/AbstractByteBufTest.java
index 59194ab..2679d1e 100644
--- a/buffer/src/test/java/io/netty/buffer/AbstractByteBufTest.java
+++ b/buffer/src/test/java/io/netty/buffer/AbstractByteBufTest.java
@@ -4487,7 +4487,7 @@ public abstract class AbstractByteBufTest {
 
     @Test
     public void testReadBytesAndWriteBytesWithFileChannel() throws IOException {
-        File file = File.createTempFile("file-channel", ".tmp");
+        File file = PlatformDependent.createTempFile("file-channel", ".tmp", null);
         RandomAccessFile randomAccessFile = null;
         try {
             randomAccessFile = new RandomAccessFile(file, "rw");
@@ -4530,7 +4530,7 @@ public abstract class AbstractByteBufTest {
 
     @Test
     public void testGetBytesAndSetBytesWithFileChannel() throws IOException {
-        File file = File.createTempFile("file-channel", ".tmp");
+        File file = PlatformDependent.createTempFile("file-channel", ".tmp", null);
         RandomAccessFile randomAccessFile = null;
         try {
             randomAccessFile = new RandomAccessFile(file, "rw");
diff --git a/buffer/src/test/java/io/netty/buffer/ReadOnlyDirectByteBufferBufTest.java b/buffer/src/test/java/io/netty/buffer/ReadOnlyDirectByteBufferBufTest.java
index d51ce11..6e40f08 100644
--- a/buffer/src/test/java/io/netty/buffer/ReadOnlyDirectByteBufferBufTest.java
+++ b/buffer/src/test/java/io/netty/buffer/ReadOnlyDirectByteBufferBufTest.java
@@ -286,7 +286,7 @@ public class ReadOnlyDirectByteBufferBufTest {
 
     @Test
     public void testWrapMemoryMapped() throws Exception {
-        File file = File.createTempFile("netty-test", "tmp");
+        File file = PlatformDependent.createTempFile("netty-test", "tmp", null);
         FileChannel output = null;
         FileChannel input = null;
         ByteBuf b1 = null;
diff --git a/codec-http/src/main/java/io/netty/handler/codec/http/multipart/AbstractDiskHttpData.java b/codec-http/src/main/java/io/netty/handler/codec/http/multipart/AbstractDiskHttpData.java
index 544bc7c..c28dbae 100644
--- a/codec-http/src/main/java/io/netty/handler/codec/http/multipart/AbstractDiskHttpData.java
+++ b/codec-http/src/main/java/io/netty/handler/codec/http/multipart/AbstractDiskHttpData.java
@@ -20,6 +20,7 @@ import io.netty.handler.codec.http.HttpConstants;
 import io.netty.util.internal.EmptyArrays;
 import io.netty.util.internal.logging.InternalLogger;
 import io.netty.util.internal.logging.InternalLoggerFactory;
+import io.netty.util.internal.PlatformDependent;
 
 import java.io.File;
 import java.io.FileInputStream;
@@ -87,9 +88,9 @@ public abstract class AbstractDiskHttpData extends AbstractHttpData {
         File tmpFile;
         if (getBaseDirectory() == null) {
             // create a temporary file
-            tmpFile = File.createTempFile(getPrefix(), newpostfix);
+            tmpFile = PlatformDependent.createTempFile(getPrefix(), newpostfix, null);
         } else {
-            tmpFile = File.createTempFile(getPrefix(), newpostfix, new File(
+            tmpFile = PlatformDependent.createTempFile(getPrefix(), newpostfix, new File(
                     getBaseDirectory()));
         }
         if (deleteOnExit()) {
diff --git a/codec-http/src/test/java/io/netty/handler/codec/http/HttpChunkedInputTest.java b/codec-http/src/test/java/io/netty/handler/codec/http/HttpChunkedInputTest.java
index 002c8d0..8e75eb9 100644
--- a/codec-http/src/test/java/io/netty/handler/codec/http/HttpChunkedInputTest.java
+++ b/codec-http/src/test/java/io/netty/handler/codec/http/HttpChunkedInputTest.java
@@ -25,6 +25,7 @@ import io.netty.handler.stream.ChunkedNioFile;
 import io.netty.handler.stream.ChunkedNioStream;
 import io.netty.handler.stream.ChunkedStream;
 import io.netty.handler.stream.ChunkedWriteHandler;
+import io.netty.util.internal.PlatformDependent;
 import org.junit.Test;
 
 import java.io.ByteArrayInputStream;
@@ -46,7 +47,7 @@ public class HttpChunkedInputTest {
 
         FileOutputStream out = null;
         try {
-            TMP = File.createTempFile("netty-chunk-", ".tmp");
+            TMP = PlatformDependent.createTempFile("netty-chunk-", ".tmp", null);
             TMP.deleteOnExit();
             out = new FileOutputStream(TMP);
             out.write(BYTES);
diff --git a/common/src/main/java/io/netty/util/internal/NativeLibraryLoader.java b/common/src/main/java/io/netty/util/internal/NativeLibraryLoader.java
index 31b4a46..a47a7f5 100644
--- a/common/src/main/java/io/netty/util/internal/NativeLibraryLoader.java
+++ b/common/src/main/java/io/netty/util/internal/NativeLibraryLoader.java
@@ -180,7 +180,7 @@ public final class NativeLibraryLoader {
             String prefix = libname.substring(0, index);
             String suffix = libname.substring(index, libname.length());
 
-            tmpFile = File.createTempFile(prefix, suffix, WORKDIR);
+            tmpFile = PlatformDependent.createTempFile(prefix, suffix, WORKDIR);
             in = url.openStream();
             out = new FileOutputStream(tmpFile);
 
diff --git a/common/src/main/java/io/netty/util/internal/PlatformDependent.java b/common/src/main/java/io/netty/util/internal/PlatformDependent.java
index 1baeecb..fd2af44 100644
--- a/common/src/main/java/io/netty/util/internal/PlatformDependent.java
+++ b/common/src/main/java/io/netty/util/internal/PlatformDependent.java
@@ -33,6 +33,7 @@ import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
+import java.nio.file.Files;
 import java.security.AccessController;
 import java.security.PrivilegedAction;
 import java.util.Deque;
@@ -56,6 +57,7 @@ import static io.netty.util.internal.PlatformDependent0.hashCodeAsciiSanitize;
 import static io.netty.util.internal.PlatformDependent0.unalignedAccess;
 import static java.lang.Math.max;
 import static java.lang.Math.min;
+import java.io.IOException;
 
 /**
  * Utility that detects various properties specific to the current runtime
@@ -1228,6 +1230,24 @@ public final class PlatformDependent {
         return true;
     }
 
+    @SuppressJava6Requirement(reason = "Guarded by version check")
+    public static File createTempFile(String prefix, String suffix, File directory) throws IOException {
+        if (javaVersion() >= 7) {
+            if (directory == null) {
+                return Files.createTempFile(prefix, suffix).toFile();
+            }
+            return Files.createTempFile(directory.toPath(), prefix, suffix).toFile();
+        }
+        if (directory == null) {
+            return File.createTempFile(prefix, suffix);
+        }
+        File file = File.createTempFile(prefix, suffix, directory);
+        // Try to adjust the perms, if this fails there is not much else we can do...
+        file.setReadable(false, false);
+        file.setReadable(true, true);
+        return file;
+    }
+
     /**
      * Package private for testing purposes only!
      */
diff --git a/handler/src/main/java/io/netty/handler/ssl/util/SelfSignedCertificate.java b/handler/src/main/java/io/netty/handler/ssl/util/SelfSignedCertificate.java
index 9f010ce..34212bd 100644
--- a/handler/src/main/java/io/netty/handler/ssl/util/SelfSignedCertificate.java
+++ b/handler/src/main/java/io/netty/handler/ssl/util/SelfSignedCertificate.java
@@ -20,6 +20,7 @@ import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
 import io.netty.handler.codec.base64.Base64;
 import io.netty.util.CharsetUtil;
+import io.netty.util.internal.PlatformDependent;
 import io.netty.util.internal.SystemPropertyUtil;
 import io.netty.util.internal.logging.InternalLogger;
 import io.netty.util.internal.logging.InternalLoggerFactory;
@@ -29,6 +30,7 @@ import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.OutputStream;
+import java.nio.file.Files;
 import java.security.KeyPair;
 import java.security.KeyPairGenerator;
 import java.security.NoSuchAlgorithmException;
@@ -238,7 +240,7 @@ public final class SelfSignedCertificate {
             wrappedBuf.release();
         }
 
-        File keyFile = File.createTempFile("keyutil_" + fqdn + '_', ".key");
+        File keyFile = PlatformDependent.createTempFile("keyutil_" + fqdn + '_', ".key", null);
         keyFile.deleteOnExit();
 
         OutputStream keyOut = new FileOutputStream(keyFile);
@@ -269,7 +271,7 @@ public final class SelfSignedCertificate {
             wrappedBuf.release();
         }
 
-        File certFile = File.createTempFile("keyutil_" + fqdn + '_', ".crt");
+        File certFile = PlatformDependent.createTempFile("keyutil_" + fqdn + '_', ".crt", null);
         certFile.deleteOnExit();
 
         OutputStream certOut = new FileOutputStream(certFile);
diff --git a/handler/src/test/java/io/netty/handler/stream/ChunkedWriteHandlerTest.java b/handler/src/test/java/io/netty/handler/stream/ChunkedWriteHandlerTest.java
index 5b03048..6caf0af 100644
--- a/handler/src/test/java/io/netty/handler/stream/ChunkedWriteHandlerTest.java
+++ b/handler/src/test/java/io/netty/handler/stream/ChunkedWriteHandlerTest.java
@@ -26,6 +26,7 @@ import io.netty.channel.ChannelOutboundHandlerAdapter;
 import io.netty.channel.embedded.EmbeddedChannel;
 import io.netty.util.CharsetUtil;
 import io.netty.util.ReferenceCountUtil;
+import io.netty.util.internal.PlatformDependent;
 import org.junit.Test;
 
 import java.io.ByteArrayInputStream;
@@ -49,7 +50,7 @@ public class ChunkedWriteHandlerTest {
 
         FileOutputStream out = null;
         try {
-            TMP = File.createTempFile("netty-chunk-", ".tmp");
+            TMP = PlatformDependent.createTempFile("netty-chunk-", ".tmp", null);
             TMP.deleteOnExit();
             out = new FileOutputStream(TMP);
             out.write(BYTES);
diff --git a/testsuite/src/main/java/io/netty/testsuite/transport/socket/SocketFileRegionTest.java b/testsuite/src/main/java/io/netty/testsuite/transport/socket/SocketFileRegionTest.java
index 53deb6c..d4f43f7 100644
--- a/testsuite/src/main/java/io/netty/testsuite/transport/socket/SocketFileRegionTest.java
+++ b/testsuite/src/main/java/io/netty/testsuite/transport/socket/SocketFileRegionTest.java
@@ -100,7 +100,7 @@ public class SocketFileRegionTest extends AbstractSocketTest {
         cb.option(ChannelOption.AUTO_READ, autoRead);
 
         final int bufferSize = 1024;
-        final File file = File.createTempFile("netty-", ".tmp");
+        final File file = PlatformDependent.createTempFile("netty-", ".tmp", null);
         file.deleteOnExit();
 
         final FileOutputStream out = new FileOutputStream(file);
diff --git a/transport-native-epoll/src/test/java/io/netty/channel/epoll/EpollSpliceTest.java b/transport-native-epoll/src/test/java/io/netty/channel/epoll/EpollSpliceTest.java
index c53ff1e..eae1711 100644
--- a/transport-native-epoll/src/test/java/io/netty/channel/epoll/EpollSpliceTest.java
+++ b/transport-native-epoll/src/test/java/io/netty/channel/epoll/EpollSpliceTest.java
@@ -29,6 +29,7 @@ import io.netty.channel.SimpleChannelInboundHandler;
 import io.netty.channel.unix.FileDescriptor;
 import io.netty.testsuite.util.TestUtils;
 import io.netty.util.NetUtil;
+import io.netty.util.internal.PlatformDependent;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -193,7 +194,7 @@ public class EpollSpliceTest {
     @Test
     public void spliceToFile() throws Throwable {
         EventLoopGroup group = new EpollEventLoopGroup(1);
-        File file = File.createTempFile("netty-splice", null);
+        File file = PlatformDependent.createTempFile("netty-splice", null, null);
         file.deleteOnExit();
 
         SpliceHandler sh = new SpliceHandler(file);
diff --git a/transport-native-unix-common-tests/src/main/java/io/netty/channel/unix/tests/UnixTestUtils.java b/transport-native-unix-common-tests/src/main/java/io/netty/channel/unix/tests/UnixTestUtils.java
index e4ebcb4..6124ec1 100644
--- a/transport-native-unix-common-tests/src/main/java/io/netty/channel/unix/tests/UnixTestUtils.java
+++ b/transport-native-unix-common-tests/src/main/java/io/netty/channel/unix/tests/UnixTestUtils.java
@@ -17,6 +17,7 @@ package io.netty.channel.unix.tests;
 
 import io.netty.channel.unix.DomainSocketAddress;
 import io.netty.channel.unix.Socket;
+import io.netty.util.internal.PlatformDependent;
 
 import java.io.File;
 import java.io.IOException;
@@ -26,7 +27,7 @@ public final class UnixTestUtils {
         try {
             File file;
             do {
-                file = File.createTempFile("NETTY", "UDS");
+                file = PlatformDependent.createTempFile("NETTY", "UDS", null);
                 if (!file.delete()) {
                     throw new IOException("failed to delete: " + file);
                 }