tomcat/CVE-2021-33037-3.patch
2021-07-19 11:46:07 +08:00

138 lines
4.8 KiB
Diff

From 74888576a60ec58ee99454e4202a0eb1a7720d98 Mon Sep 17 00:00:00 2001
From: Mark Thomas <markt@apache.org>
Date: Mon, 10 May 2021 22:14:18 +0100
Subject: [PATCH] Ensure chunked, if present, is the last encoding in the list
---
.../apache/coyote/http11/Http11Processor.java | 13 ++++++++-
.../coyote/http11/TestHttp11Processor.java | 28 +++++++++++++------
webapps/docs/changelog.xml | 5 ++++
3 files changed, 36 insertions(+), 10 deletions(-)
diff --git a/java/org/apache/coyote/http11/Http11Processor.java b/java/org/apache/coyote/http11/Http11Processor.java
index 4021355..17932b9 100644
--- a/java/org/apache/coyote/http11/Http11Processor.java
+++ b/java/org/apache/coyote/http11/Http11Processor.java
@@ -238,11 +238,22 @@ public class Http11Processor extends AbstractProcessor {
* supported, a 501 response will be returned to the client.
*/
private void addInputFilter(InputFilter[] inputFilters, String encodingName) {
+ if (contentDelimitation) {
+ // Chunked has already been specified and it must be the final
+ // encoding.
+ // 400 - Bad request
+ response.setStatus(400);
+ setErrorState(ErrorState.CLOSE_CLEAN, null);
+ if (log.isDebugEnabled()) {
+ log.debug(sm.getString("http11processor.request.prepare") +
+ " Tranfer encoding lists chunked before [" + encodingName + "]");
+ }
+ return;
+ }
// Trim provided encoding name and convert to lower case since transfer
// encoding names are case insensitive. (RFC2616, section 3.6)
encodingName = encodingName.trim().toLowerCase(Locale.ENGLISH);
-
if (encodingName.equals("chunked")) {
inputBuffer.addActiveFilter(inputFilters[Constants.CHUNKED_FILTER]);
contentDelimitation = true;
diff --git a/test/org/apache/coyote/http11/TestHttp11Processor.java b/test/org/apache/coyote/http11/TestHttp11Processor.java
index 84fdd42..ceb2601 100644
--- a/test/org/apache/coyote/http11/TestHttp11Processor.java
+++ b/test/org/apache/coyote/http11/TestHttp11Processor.java
@@ -1287,47 +1287,53 @@ public class TestHttp11Processor extends TomcatBaseTest {
@Test
public void testTEHeaderUnknown01() throws Exception {
- doTestTEHeaderUnknown("identity");
+ doTestTEHeaderInvalid("identity", false);
}
@Test
public void testTEHeaderUnknown02() throws Exception {
- doTestTEHeaderUnknown("identity, chunked");
+ doTestTEHeaderInvalid("identity, chunked", false);
}
@Test
public void testTEHeaderUnknown03() throws Exception {
- doTestTEHeaderUnknown("unknown, chunked");
+ doTestTEHeaderInvalid("unknown, chunked", false);
}
@Test
public void testTEHeaderUnknown04() throws Exception {
- doTestTEHeaderUnknown("void");
+ doTestTEHeaderInvalid("void", false);
}
@Test
public void testTEHeaderUnknown05() throws Exception {
- doTestTEHeaderUnknown("void, chunked");
+ doTestTEHeaderInvalid("void, chunked", false);
}
@Test
public void testTEHeaderUnknown06() throws Exception {
- doTestTEHeaderUnknown("void, identity");
+ doTestTEHeaderInvalid("void, identity", false);
}
@Test
public void testTEHeaderUnknown07() throws Exception {
- doTestTEHeaderUnknown("identity, void");
+ doTestTEHeaderInvalid("identity, void", false);
}
- private void doTestTEHeaderUnknown(String headerValue) throws Exception {
+ @Test
+ public void testTEHeaderChunkedNotLast01() throws Exception {
+ doTestTEHeaderInvalid("chunked, void", true);
+ }
+
+
+ private void doTestTEHeaderInvalid(String headerValue, boolean badRequest) throws Exception {
Tomcat tomcat = getTomcatInstance();
// No file system docBase required
@@ -1351,7 +1357,11 @@ public class TestHttp11Processor extends TomcatBaseTest {
client.connect();
client.processRequest(false);
- Assert.assertTrue(client.isResponse501());
+ if (badRequest) {
+ Assert.assertTrue(client.isResponse400());
+ } else {
+ Assert.assertTrue(client.isResponse501());
+ }
}
diff --git a/webapps/docs/changelog.xml b/webapps/docs/changelog.xml
index e47f3d6..35b8eab 100644
--- a/webapps/docs/changelog.xml
+++ b/webapps/docs/changelog.xml
@@ -319,6 +319,11 @@
Process transfer encoding headers from both HTTP 1.0 and HTTP 1.1
clients. (markt)
</fix>
+ <fix>
+ Ensure that if the transfer encoding header contains the
+ <code>chunked</code>, that the <code>chunked</code> encoding is the
+ final encoding listed. (markt)
+ </fix>
</changelog>
</subsection>
<subsection name="Web applications">
--
2.23.0