Hi, I have prepared a debdiff for commons-httpclient that addresses three CVEs namely CVE-2012-5783, CVE-2012-6153 and CVE-2014-3577. The differences between the versions in wheezy, jessie and sid are minor since we use the same upstream version 3.1 for all of them. 06_fix_CVE-2012-5783.patch is identical to the version in wheezy and fixes both CVE-2012-5783 and CVE-2012-6153. CVE-2014-3577 was created because of an incomplete fix for CVE-2012-6153. Further details are available at https://bugs.debian.org/758086#59 I would be glad if someone uploaded this package to squeeze. Regards, Markus
diff -u commons-httpclient-3.1/debian/changelog commons-httpclient-3.1/debian/changelog
--- commons-httpclient-3.1/debian/changelog
+++ commons-httpclient-3.1/debian/changelog
@@ -1,3 +1,26 @@
+commons-httpclient (3.1-9+deb6u1) squeeze-lts; urgency=medium
+
+ * Team upload.
+ * Add 06_fix_CVE-2012-5783.patch and fix CVE-2012-5783 and CVE-2012-6153.
+ Apache Commons HttpClient 3.1 did not verify that the server hostname
+ matches a domain name in the subject's Common Name (CN) or subjectAltName
+ field of the X.509 certificate, which allows man-in-the-middle attackers to
+ spoof SSL servers via an arbitrary valid certificate.
+ Thanks to Alberto Fernández Martínez for the patch.
+ * Add CVE-2014-3577.patch.
+ It was found that the fix for CVE-2012-6153 was incomplete: the code added
+ to check that the server hostname matches the domain name in a subject's
+ Common Name (CN) field in X.509 certificates was flawed. A
+ man-in-the-middle attacker could use this flaw to spoof an SSL server using
+ a specially crafted X.509 certificate. The fix for CVE-2012-6153 was
+ intended to address the incomplete patch for CVE-2012-5783. The issue is
+ now completely resolved by applying this patch and the
+ 06_fix_CVE-2012-5783.patch.
+ * Change java.source and java.target ant properties to 1.5, otherwise
+ commons-httpclient will not compile with this patch.
+
+ -- Markus Koschany <apo@gambaru.de> Wed, 15 Apr 2015 22:18:19 +0200
+
commons-httpclient (3.1-9) unstable; urgency=low
* Add myself to Uploaders
diff -u commons-httpclient-3.1/debian/ant.properties commons-httpclient-3.1/debian/ant.properties
--- commons-httpclient-3.1/debian/ant.properties
+++ commons-httpclient-3.1/debian/ant.properties
@@ -4,2 +4,2 @@
-ant.build.javac.source=1.4
-ant.build.javac.target=1.4
+ant.build.javac.source=1.5
+ant.build.javac.target=1.5
diff -u commons-httpclient-3.1/debian/patches/series commons-httpclient-3.1/debian/patches/series
--- commons-httpclient-3.1/debian/patches/series
+++ commons-httpclient-3.1/debian/patches/series
@@ -6,0 +7,2 @@
+06_fix_CVE-2012-5783.patch
+CVE-2014-3577.patch
only in patch2:
unchanged:
--- commons-httpclient-3.1.orig/debian/patches/06_fix_CVE-2012-5783.patch
+++ commons-httpclient-3.1/debian/patches/06_fix_CVE-2012-5783.patch
@@ -0,0 +1,383 @@
+Description: Fixed CN extraction from DN of X500 principal and wildcard validation
+
+ commons-httpclient (3.1-10.2) unstable; urgency=low
+
+ * Fixed CN extraction from DN of X500 principal and wildcard validation
+
+
+Author: Alberto Fernández Martínez <infjaf@gmail.com>
+
+
+Origin: other
+Bug-Debian: http://bugs.debian.org/692442
+Forwarded: https://issues.apache.org/jira/browse/HTTPCLIENT-1265
+Last-Update: <2012-12-06>
+
+--- commons-httpclient-3.1.orig/src/java/org/apache/commons/httpclient/protocol/SSLProtocolSocketFactory.java
++++ commons-httpclient-3.1/src/java/org/apache/commons/httpclient/protocol/SSLProtocolSocketFactory.java
+@@ -31,10 +31,25 @@
+ package org.apache.commons.httpclient.protocol;
+
+ import java.io.IOException;
++import java.io.InputStream;
+ import java.net.InetAddress;
+ import java.net.Socket;
+ import java.net.UnknownHostException;
++import java.security.cert.Certificate;
++import java.security.cert.CertificateParsingException;
++import java.security.cert.X509Certificate;
++import java.util.Arrays;
++import java.util.Collection;
++import java.util.Iterator;
++import java.util.LinkedList;
++import java.util.List;
++import java.util.Locale;
++import java.util.StringTokenizer;
++import java.util.regex.Pattern;
+
++import javax.net.ssl.SSLException;
++import javax.net.ssl.SSLSession;
++import javax.net.ssl.SSLSocket;
+ import javax.net.ssl.SSLSocketFactory;
+
+ import org.apache.commons.httpclient.ConnectTimeoutException;
+@@ -55,6 +70,11 @@ public class SSLProtocolSocketFactory im
+ */
+ private static final SSLProtocolSocketFactory factory = new SSLProtocolSocketFactory();
+
++ // This is a a sorted list, if you insert new elements do it orderdered.
++ private final static String[] BAD_COUNTRY_2LDS =
++ {"ac", "co", "com", "ed", "edu", "go", "gouv", "gov", "info",
++ "lg", "ne", "net", "or", "org"};
++
+ /**
+ * Gets an singleton instance of the SSLProtocolSocketFactory.
+ * @return a SSLProtocolSocketFactory
+@@ -79,12 +99,14 @@ public class SSLProtocolSocketFactory im
+ InetAddress clientHost,
+ int clientPort)
+ throws IOException, UnknownHostException {
+- return SSLSocketFactory.getDefault().createSocket(
++ Socket sslSocket = SSLSocketFactory.getDefault().createSocket(
+ host,
+ port,
+ clientHost,
+ clientPort
+ );
++ verifyHostName(host, (SSLSocket) sslSocket);
++ return sslSocket;
+ }
+
+ /**
+@@ -124,16 +146,19 @@ public class SSLProtocolSocketFactory im
+ }
+ int timeout = params.getConnectionTimeout();
+ if (timeout == 0) {
+- return createSocket(host, port, localAddress, localPort);
++ Socket sslSocket = createSocket(host, port, localAddress, localPort);
++ verifyHostName(host, (SSLSocket) sslSocket);
++ return sslSocket;
+ } else {
+ // To be eventually deprecated when migrated to Java 1.4 or above
+- Socket socket = ReflectionSocketFactory.createSocket(
++ Socket sslSocket = ReflectionSocketFactory.createSocket(
+ "javax.net.ssl.SSLSocketFactory", host, port, localAddress, localPort, timeout);
+- if (socket == null) {
+- socket = ControllerThreadSocketFactory.createSocket(
++ if (sslSocket == null) {
++ sslSocket = ControllerThreadSocketFactory.createSocket(
+ this, host, port, localAddress, localPort, timeout);
+ }
+- return socket;
++ verifyHostName(host, (SSLSocket) sslSocket);
++ return sslSocket;
+ }
+ }
+
+@@ -142,10 +167,12 @@ public class SSLProtocolSocketFactory im
+ */
+ public Socket createSocket(String host, int port)
+ throws IOException, UnknownHostException {
+- return SSLSocketFactory.getDefault().createSocket(
++ Socket sslSocket = SSLSocketFactory.getDefault().createSocket(
+ host,
+ port
+ );
++ verifyHostName(host, (SSLSocket) sslSocket);
++ return sslSocket;
+ }
+
+ /**
+@@ -157,13 +184,271 @@ public class SSLProtocolSocketFactory im
+ int port,
+ boolean autoClose)
+ throws IOException, UnknownHostException {
+- return ((SSLSocketFactory) SSLSocketFactory.getDefault()).createSocket(
++ Socket sslSocket = ((SSLSocketFactory) SSLSocketFactory.getDefault()).createSocket(
+ socket,
+ host,
+ port,
+ autoClose
+ );
++ verifyHostName(host, (SSLSocket) sslSocket);
++ return sslSocket;
+ }
++
++
++
++
++ /**
++ * Verifies that the given hostname in certicifate is the hostname we are trying to connect to
++ * http://www.cvedetails.com/cve/CVE-2012-5783/
++ * @param host
++ * @param ssl
++ * @throws IOException
++ */
++
++ private static void verifyHostName(String host, SSLSocket ssl)
++ throws IOException {
++ if (host == null) {
++ throw new IllegalArgumentException("host to verify was null");
++ }
++
++ SSLSession session = ssl.getSession();
++ if (session == null) {
++ // In our experience this only happens under IBM 1.4.x when
++ // spurious (unrelated) certificates show up in the server's chain.
++ // Hopefully this will unearth the real problem:
++ InputStream in = ssl.getInputStream();
++ in.available();
++ /*
++ If you're looking at the 2 lines of code above because you're
++ running into a problem, you probably have two options:
++
++ #1. Clean up the certificate chain that your server
++ is presenting (e.g. edit "/etc/apache2/server.crt" or
++ wherever it is your server's certificate chain is
++ defined).
++
++ OR
++
++ #2. Upgrade to an IBM 1.5.x or greater JVM, or switch to a
++ non-IBM JVM.
++ */
++
++ // If ssl.getInputStream().available() didn't cause an exception,
++ // maybe at least now the session is available?
++ session = ssl.getSession();
++ if (session == null) {
++ // If it's still null, probably a startHandshake() will
++ // unearth the real problem.
++ ssl.startHandshake();
++
++ // Okay, if we still haven't managed to cause an exception,
++ // might as well go for the NPE. Or maybe we're okay now?
++ session = ssl.getSession();
++ }
++ }
++
++ Certificate[] certs = session.getPeerCertificates();
++ verifyHostName(host.trim().toLowerCase(Locale.US), (X509Certificate) certs[0]);
++ }
++ /**
++ * Extract the names from the certificate and tests host matches one of them
++ * @param host
++ * @param cert
++ * @throws SSLException
++ */
++
++ private static void verifyHostName(final String host, X509Certificate cert)
++ throws SSLException {
++ // I'm okay with being case-insensitive when comparing the host we used
++ // to establish the socket to the hostname in the certificate.
++ // Don't trim the CN, though.
++
++ String cn = getCN(cert);
++ String[] subjectAlts = getDNSSubjectAlts(cert);
++ verifyHostName(host, cn.toLowerCase(Locale.US), subjectAlts);
++
++ }
++
++ /**
++ * Extract all alternative names from a certificate.
++ * @param cert
++ * @return
++ */
++ private static String[] getDNSSubjectAlts(X509Certificate cert) {
++ LinkedList subjectAltList = new LinkedList();
++ Collection c = null;
++ try {
++ c = cert.getSubjectAlternativeNames();
++ } catch (CertificateParsingException cpe) {
++ // Should probably log.debug() this?
++ cpe.printStackTrace();
++ }
++ if (c != null) {
++ Iterator it = c.iterator();
++ while (it.hasNext()) {
++ List list = (List) it.next();
++ int type = ((Integer) list.get(0)).intValue();
++ // If type is 2, then we've got a dNSName
++ if (type == 2) {
++ String s = (String) list.get(1);
++ subjectAltList.add(s);
++ }
++ }
++ }
++ if (!subjectAltList.isEmpty()) {
++ String[] subjectAlts = new String[subjectAltList.size()];
++ subjectAltList.toArray(subjectAlts);
++ return subjectAlts;
++ } else {
++ return new String[0];
++ }
++
++ }
++ /**
++ * Verifies
++ * @param host
++ * @param cn
++ * @param subjectAlts
++ * @throws SSLException
++ */
++
++ private static void verifyHostName(final String host, String cn, String[] subjectAlts)throws SSLException{
++ StringBuffer cnTested = new StringBuffer();
++
++ for (int i = 0; i < subjectAlts.length; i++){
++ String name = subjectAlts[i];
++ if (name != null) {
++ name = name.toLowerCase();
++ if (verifyHostName(host, name)){
++ return;
++ }
++ cnTested.append("/").append(name);
++ }
++ }
++ if (cn != null && verifyHostName(host, cn)){
++ return;
++ }
++ cnTested.append("/").append(cn);
++ throw new SSLException("hostname in certificate didn't match: <"
++ + host + "> != <" + cnTested + ">");
++
++ }
++
++ private static boolean verifyHostName(final String host, final String cn){
++ if (doWildCard(cn) && !isIPAddress(host)) {
++ return matchesWildCard(cn, host);
++ }
++ return host.equalsIgnoreCase(cn);
++ }
++ private static boolean doWildCard(String cn) {
++ // Contains a wildcard
++ // wildcard in the first block
++ // not an ipaddress (ip addres must explicitily be equal)
++ // not using 2nd level common tld : ex: not for *.co.uk
++ String parts[] = cn.split("\\.");
++ return parts.length >= 3 &&
++ parts[0].endsWith("*") &&
++ acceptableCountryWildcard(cn) &&
++ !isIPAddress(cn);
++ }
++
++
++ private static final Pattern IPV4_PATTERN =
++ Pattern.compile("^(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}$");
++
++ private static final Pattern IPV6_STD_PATTERN =
++ Pattern.compile("^(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}$");
++
++ private static final Pattern IPV6_HEX_COMPRESSED_PATTERN =
++ Pattern.compile("^((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)::((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)$");
++
++
++ private static boolean isIPAddress(final String hostname) {
++ return hostname != null
++ && (
++ IPV4_PATTERN.matcher(hostname).matches()
++ || IPV6_STD_PATTERN.matcher(hostname).matches()
++ || IPV6_HEX_COMPRESSED_PATTERN.matcher(hostname).matches()
++ );
++
++ }
++
++ private static boolean acceptableCountryWildcard(final String cn) {
++ // The CN better have at least two dots if it wants wildcard action,
++ // but can't be [*.co.uk] or [*.co.jp] or [*.org.uk], etc...
++ // The [*.co.uk] problem is an interesting one. Should we just
++ // hope that CA's would never foolishly allow such a
++ // certificate to happen?
++
++ String[] parts = cn.split("\\.");
++ // Only checks for 3 levels, with country code of 2 letters.
++ if (parts.length > 3 || parts[parts.length - 1].length() != 2) {
++ return true;
++ }
++ String countryCode = parts[parts.length - 2];
++ return Arrays.binarySearch(BAD_COUNTRY_2LDS, countryCode) < 0;
++ }
++
++ private static boolean matchesWildCard(final String cn,
++ final String hostName) {
++ String parts[] = cn.split("\\.");
++ boolean match = false;
++ String firstpart = parts[0];
++ if (firstpart.length() > 1) {
++ // server∗
++ // e.g. server
++ String prefix = firstpart.substring(0, firstpart.length() - 1);
++ // skipwildcard part from cn
++ String suffix = cn.substring(firstpart.length());
++ // skip wildcard part from host
++ String hostSuffix = hostName.substring(prefix.length());
++ match = hostName.startsWith(prefix) && hostSuffix.endsWith(suffix);
++ } else {
++ match = hostName.endsWith(cn.substring(1));
++ }
++ if (match) {
++ // I f we're in strict mode ,
++ // [ ∗.foo.com] is not allowed to match [a.b.foo.com]
++ match = countDots(hostName) == countDots(cn);
++ }
++ return match;
++ }
++
++ private static int countDots(final String data) {
++ int dots = 0;
++ for (int i = 0; i < data.length(); i++) {
++ if (data.charAt(i) == '.') {
++ dots += 1;
++ }
++ }
++ return dots;
++ }
++
++ private static String getCN(X509Certificate cert) {
++ // Note: toString() seems to do a better job than getName()
++ //
++ // For example, getName() gives me this:
++ // 1.2.840.113549.1.9.1=#16166a756c6975736461766965734063756362632e636f6d
++ //
++ // whereas toString() gives me this:
++ // EMAILADDRESS=juliusdavies@cucbc.com
++ String subjectPrincipal = cert.getSubjectX500Principal().toString();
++
++ return getCN(subjectPrincipal);
++
++ }
++ private static String getCN(String subjectPrincipal) {
++ StringTokenizer st = new StringTokenizer(subjectPrincipal, ",");
++ while(st.hasMoreTokens()) {
++ String tok = st.nextToken().trim();
++ if (tok.length() > 3) {
++ if (tok.substring(0, 3).equalsIgnoreCase("CN=")) {
++ return tok.substring(3);
++ }
++ }
++ }
++ return null;
++ }
+
+ /**
+ * All instances of SSLProtocolSocketFactory are the same.
only in patch2:
unchanged:
--- commons-httpclient-3.1.orig/debian/patches/CVE-2014-3577.patch
+++ commons-httpclient-3.1/debian/patches/CVE-2014-3577.patch
@@ -0,0 +1,111 @@
+From: Markus Koschany <apo@gambaru.de>
+Date: Mon, 23 Mar 2015 22:45:14 +0100
+Subject: CVE-2014-3577
+
+It was found that the fix for CVE-2012-6153 was incomplete: the code added to
+check that the server hostname matches the domain name in a subject's Common
+Name (CN) field in X.509 certificates was flawed. A man-in-the-middle attacker
+could use this flaw to spoof an SSL server using a specially crafted X.509
+certificate.
+The fix for CVE-2012-6153 was intended to address the incomplete patch for
+CVE-2012-5783. This means the issue is now completely resolved by applying
+this patch and the 06_fix_CVE-2012-5783.patch. The patch was taken from the
+Fedora distribution. See Debian bug #758086 for further details.
+
+References:
+
+upstream announcement:
+https://mail-archives.apache.org/mod_mbox/www-announce/201408.mbox/CVE-2014-3577
+
+Fedora-Fix:
+http://pkgs.fedoraproject.org/cgit/jakarta-commons-httpclient.git/tree/jakarta-commons-httpclient-CVE-2014-3577.patch
+
+CentOS-Fix:
+https://git.centos.org/blob/rpms!jakarta-commons-httpclient/SOURCES!jakarta-commons-httpclient-CVE-2014-3577.patch
+
+Debian-Bug: https://bugs.debian.org/758086
+Forwarded: not-needed, already fixed
+---
+ .../protocol/SSLProtocolSocketFactory.java | 57 ++++++++++++++--------
+ 1 file changed, 37 insertions(+), 20 deletions(-)
+
+diff --git a/src/java/org/apache/commons/httpclient/protocol/SSLProtocolSocketFactory.java b/src/java/org/apache/commons/httpclient/protocol/SSLProtocolSocketFactory.java
+index fa0acc7..e6ce513 100644
+--- a/src/java/org/apache/commons/httpclient/protocol/SSLProtocolSocketFactory.java
++++ b/src/java/org/apache/commons/httpclient/protocol/SSLProtocolSocketFactory.java
+@@ -44,9 +44,15 @@ import java.util.Iterator;
+ import java.util.LinkedList;
+ import java.util.List;
+ import java.util.Locale;
+-import java.util.StringTokenizer;
++import java.util.NoSuchElementException;
+ import java.util.regex.Pattern;
+
++import javax.naming.InvalidNameException;
++import javax.naming.NamingException;
++import javax.naming.directory.Attribute;
++import javax.naming.directory.Attributes;
++import javax.naming.ldap.LdapName;
++import javax.naming.ldap.Rdn;
+ import javax.net.ssl.SSLException;
+ import javax.net.ssl.SSLSession;
+ import javax.net.ssl.SSLSocket;
+@@ -424,28 +430,39 @@ public class SSLProtocolSocketFactory implements SecureProtocolSocketFactory {
+ return dots;
+ }
+
+- private static String getCN(X509Certificate cert) {
+- // Note: toString() seems to do a better job than getName()
+- //
+- // For example, getName() gives me this:
+- // 1.2.840.113549.1.9.1=#16166a756c6975736461766965734063756362632e636f6d
+- //
+- // whereas toString() gives me this:
+- // EMAILADDRESS=juliusdavies@cucbc.com
+- String subjectPrincipal = cert.getSubjectX500Principal().toString();
+-
+- return getCN(subjectPrincipal);
+-
++ private static String getCN(final X509Certificate cert) {
++ final String subjectPrincipal = cert.getSubjectX500Principal().toString();
++ try {
++ return extractCN(subjectPrincipal);
++ } catch (SSLException ex) {
++ return null;
++ }
+ }
+- private static String getCN(String subjectPrincipal) {
+- StringTokenizer st = new StringTokenizer(subjectPrincipal, ",");
+- while(st.hasMoreTokens()) {
+- String tok = st.nextToken().trim();
+- if (tok.length() > 3) {
+- if (tok.substring(0, 3).equalsIgnoreCase("CN=")) {
+- return tok.substring(3);
++
++ private static String extractCN(final String subjectPrincipal) throws SSLException {
++ if (subjectPrincipal == null) {
++ return null;
++ }
++ try {
++ final LdapName subjectDN = new LdapName(subjectPrincipal);
++ final List<Rdn> rdns = subjectDN.getRdns();
++ for (int i = rdns.size() - 1; i >= 0; i--) {
++ final Rdn rds = rdns.get(i);
++ final Attributes attributes = rds.toAttributes();
++ final Attribute cn = attributes.get("cn");
++ if (cn != null) {
++ try {
++ final Object value = cn.get();
++ if (value != null) {
++ return value.toString();
++ }
++ } catch (NoSuchElementException ignore) {
++ } catch (NamingException ignore) {
++ }
+ }
+ }
++ } catch (InvalidNameException e) {
++ throw new SSLException(subjectPrincipal + " is not a valid X500 distinguished name");
+ }
+ return null;
+ }
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