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markt pushed a commit to branch 8.5.x
in repository https://gitbox.apache.org/repos/asf/tomcat.git
The following commit(s) were added to refs/heads/8.5.x by this push:
new 040d899 Fix BZ 65272. Restore the use of LF as an HTTP line terminator
040d899 is described below
commit 040d8993e491b7deece7a09da7be7b11642f444f
Author: Mark Thomas <ma...@apache.org>
AuthorDate: Wed Apr 28 18:23:07 2021 +0100
Fix BZ 65272. Restore the use of LF as an HTTP line terminator
---
.../apache/coyote/http11/Http11InputBuffer.java | 16 ++++++++++++----
.../coyote/http11/TestHttp11InputBuffer.java | 22 ++++------------------
.../coyote/http11/TestHttp11InputBufferCRLF.java | 8 ++++++++
webapps/docs/changelog.xml | 7 +++++++
4 files changed, 31 insertions(+), 22 deletions(-)
diff --git a/java/org/apache/coyote/http11/Http11InputBuffer.java
b/java/org/apache/coyote/http11/Http11InputBuffer.java
index b8fcee3..c50b4d1 100644
--- a/java/org/apache/coyote/http11/Http11InputBuffer.java
+++ b/java/org/apache/coyote/http11/Http11InputBuffer.java
@@ -564,10 +564,15 @@ public class Http11InputBuffer implements InputBuffer,
ApplicationBufferHandler
prevChr = chr;
chr = byteBuffer.get();
if (chr == Constants.CR) {
- // Possible end of request line. Need LF next.
+ // Possible end of request line. Need LF next else invalid.
} else if (prevChr == Constants.CR && chr == Constants.LF) {
+ // CRLF is the standard line terminator
end = pos - 1;
parsingRequestLineEol = true;
+ } else if (chr == Constants.LF) {
+ // LF is an optional line terminator
+ end = pos;
+ parsingRequestLineEol = true;
} else if (prevChr == Constants.CR ||
!HttpParser.isHttpProtocol(chr)) {
String invalidProtocol =
parseInvalid(parsingRequestLineStart, byteBuffer);
throw new
IllegalArgumentException(sm.getString("iib.invalidHttpProtocol",
invalidProtocol));
@@ -840,7 +845,8 @@ public class Http11InputBuffer implements InputBuffer,
ApplicationBufferHandler
if (chr == Constants.CR && prevChr != Constants.CR) {
// Possible start of CRLF - process the next byte.
- } else if (prevChr == Constants.CR && chr == Constants.LF) {
+ } else if (chr == Constants.LF) {
+ // CRLF or LF is an acceptable line terminator
return HeaderParseStatus.DONE;
} else {
if (prevChr == Constants.CR) {
@@ -952,7 +958,8 @@ public class Http11InputBuffer implements InputBuffer,
ApplicationBufferHandler
chr = byteBuffer.get();
if (chr == Constants.CR) {
// Possible start of CRLF - process the next byte.
- } else if (prevChr == Constants.CR && chr == Constants.LF)
{
+ } else if (chr == Constants.LF) {
+ // CRLF or LF is an acceptable line terminator
eol = true;
} else if (prevChr == Constants.CR) {
// Invalid value
@@ -1030,7 +1037,8 @@ public class Http11InputBuffer implements InputBuffer,
ApplicationBufferHandler
chr = byteBuffer.get();
if (chr == Constants.CR) {
// Skip
- } else if (prevChr == Constants.CR && chr == Constants.LF) {
+ } else if (chr == Constants.LF) {
+ // CRLF or LF is an acceptable line terminator
eol = true;
} else {
headerData.lastSignificantChar = pos;
diff --git a/test/org/apache/coyote/http11/TestHttp11InputBuffer.java
b/test/org/apache/coyote/http11/TestHttp11InputBuffer.java
index ea38be0..36a65e1 100644
--- a/test/org/apache/coyote/http11/TestHttp11InputBuffer.java
+++ b/test/org/apache/coyote/http11/TestHttp11InputBuffer.java
@@ -198,6 +198,10 @@ public class TestHttp11InputBuffer extends TomcatBaseTest {
// TAB is allowed
continue;
}
+ if (i == '\n') {
+ // LF is the optional line terminator
+ continue;
+ }
doTestBug51557InvalidCharInValue((char) i);
tearDown();
setUp();
@@ -688,24 +692,6 @@ public class TestHttp11InputBuffer extends TomcatBaseTest {
@Test
- public void testInvalidEndOfRequestLine02() {
-
- String[] request = new String[1];
- request[0] =
- "GET /test HTTP/1.1" + LF +
- "Host: localhost:8080" + CRLF +
- "Connection: close" + CRLF +
- CRLF;
-
- InvalidClient client = new InvalidClient(request);
-
- client.doRequest();
- Assert.assertTrue(client.getResponseLine(), client.isResponse400());
- Assert.assertTrue(client.isResponseBodyOK());
- }
-
-
- @Test
public void testInvalidHeader01() {
String[] request = new String[1];
diff --git a/test/org/apache/coyote/http11/TestHttp11InputBufferCRLF.java
b/test/org/apache/coyote/http11/TestHttp11InputBufferCRLF.java
index a953031..2753c21 100644
--- a/test/org/apache/coyote/http11/TestHttp11InputBufferCRLF.java
+++ b/test/org/apache/coyote/http11/TestHttp11InputBufferCRLF.java
@@ -109,6 +109,14 @@ public class TestHttp11InputBufferCRLF extends
TomcatBaseTest {
CRLF,
Boolean.FALSE, Boolean.FALSE, parameterSets);
+ // Standard HTTP/1.1 request using LF rather than CRLF
+ addRequestWithSplits("GET /test HTTP/1.1" + LF +
+ "Host: localhost:8080" + LF +
+ "Connection: close" + LF +
+ LF,
+ Boolean.FALSE, parameterSets);
+
+
return parameterSets;
}
diff --git a/webapps/docs/changelog.xml b/webapps/docs/changelog.xml
index d5bbb68..5ce8918 100644
--- a/webapps/docs/changelog.xml
+++ b/webapps/docs/changelog.xml
@@ -139,6 +139,13 @@
request line, ensure that all the available data is included in the
error message. (markt)
</fix>
+ <fix>
+ <bug>65272</bug>: Restore the optional HTTP feature that allows
+ <code>LF</code> to be treated as a line terminator for the request line
+ and/or HTTP headers lines as well as the standard <code>CRLF</code>.
+ This behaviour was previously removed as a side-effect of the fix for
+ CVE-2020-1935. (markt)
+ </fix>
</changelog>
</subsection>
<subsection name="Jasper">
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