File dom4j-CVE-2018-1000632.patch of Package dom4j

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File dom4j-CVE-2018-1000632.patch of Package dom4j (Revision d322aa00f91d0da34ed22978a0f9d8e7)

Currently displaying revision d322aa00f91d0da34ed22978a0f9d8e7 , Show latest

Index: dom4j/src/java/org/dom4j/Namespace.java
===================================================================
--- dom4j.orig/src/java/org/dom4j/Namespace.java
+++ dom4j/src/java/org/dom4j/Namespace.java
@@ -51,6 +51,10 @@ public class Namespace extends AbstractN
     public Namespace(String prefix, String uri) {
         this.prefix = (prefix != null) ? prefix : "";
         this.uri = (uri != null) ? uri : "";
+
+	if (!this.prefix.isEmpty()) {
+		QName.validateNCName(this.prefix);
+	}
     }
 
     /**
Index: dom4j/src/java/org/dom4j/QName.java
===================================================================
--- dom4j.orig/src/java/org/dom4j/QName.java
+++ dom4j/src/java/org/dom4j/QName.java
@@ -11,6 +11,7 @@ import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.io.Serializable;
+import java.util.regex.Pattern;
 
 import org.dom4j.tree.QNameCache;
 import org.dom4j.util.SingletonStrategy;
@@ -20,6 +21,7 @@ import org.dom4j.util.SingletonStrategy;
  * <code>QName</code> represents a qualified name value of an XML element or
  * attribute. It consists of a local name and a {@link Namespace}instance. This
  * object is immutable.
+ * @author Filip Jirsak
  * </p>
  * 
  * @author <a href="mailto:jstrachan@apache.org">James Strachan </a>
@@ -28,6 +30,81 @@ public class QName implements Serializab
     /** The Singleton instance */
     private static SingletonStrategy singleton = null;
 
+    /**
+     * {@code NameStartChar} without colon.
+     *
+     * <pre>NameStartChar      ::=     ":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]</pre>
+     *
+     * @see <a href="https://www.w3.org/TR/xml/#sec-common-syn">XML 1.0 - 2.3 Common Syntactic Constructs</a>
+     * @see <a href="https://www.w3.org/TR/2006/REC-xml11-20060816/#sec-common-syn">XML 1.1 - 2.3 Common Syntactic Constructs</a>
+     */
+    private static final String NAME_START_CHAR = "_A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD";
+
+    /**
+     * {@code NameChar} without colon.
+     *
+     * <pre>NameChar   ::=     NameStartChar | "-" | "." | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]</pre>
+     *
+     * @see <a href="https://www.w3.org/TR/xml/#sec-common-syn">XML 1.0 - 2.3 Common Syntactic Constructs</a>
+     * @see <a href="https://www.w3.org/TR/2006/REC-xml11-20060816/#sec-common-syn">XML 1.1 - 2.3 Common Syntactic Constructs</a>
+     */
+    private static final String NAME_CHAR = NAME_START_CHAR + "-.0-9\u00B7\u0300-\u036F\u203F-\u2040";
+
+    /**
+     * {@code NCName}
+     * {@code NCName}
+     *
+     * <pre>
+     * NCName          ::=     NCNameStartChar NCNameChar*     (An XML Name, minus the ":")
+     * NCNameChar      ::=     NameChar -':'
+     * NCNameStartChar ::=     NameStartChar -':'
+     * </pre>
+     *
+     * @see <a href="https://www.w3.org/TR/xml-names/#ns-qualnames">Namespaces in XML 1.0 - 4 Qualified Names</a>
+     * @see <a href="https://www.w3.org/TR/2006/REC-xml-names11-20060816/#ns-qualnames">Namespaces in XML 1.1 - 4 Qualified Names</a>
+     */
+    private static final String NCNAME = "["+NAME_START_CHAR+"]["+NAME_CHAR+"]*";
+
+    /**
+     * Regular expression for {@code Name} (with colon).
+     *
+     * <pre>Name       ::=     NameStartChar (NameChar)*</pre>
+     *
+     * @see <a href="https://www.w3.org/TR/xml/#sec-common-syn">XML 1.0 - 2.3 Common Syntactic Constructs</a>
+     * @see <a href="https://www.w3.org/TR/2006/REC-xml11-20060816/#sec-common-syn">XML 1.1 - 2.3 Common Syntactic Constructs</a>
+     */
+    private static final Pattern RE_NAME = Pattern.compile("[:"+NAME_START_CHAR+"][:"+NAME_CHAR+"]*");
+
+    /**
+     * Regular expression for {@code NCName}.
+     *
+     * <pre>
+     * NCName          ::=     NCNameStartChar NCNameChar*     (An XML Name, minus the ":")
+     * NCNameChar      ::=     NameChar -':'
+     * NCNameStartChar ::=     NameStartChar -':'
+     * </pre>
+     *
+     * @see <a href="https://www.w3.org/TR/xml-names/#ns-qualnames">Namespaces in XML 1.0 - 4 Qualified Names</a>
+     * @see <a href="https://www.w3.org/TR/2006/REC-xml-names11-20060816/#ns-qualnames">Namespaces in XML 1.1 - 4 Qualified Names</a>
+     */
+    private static final Pattern RE_NCNAME = Pattern.compile(NCNAME);
+
+    /**
+     * Regular expression for {@code QName}.
+     *
+     * <pre>
+     * QName           ::=     PrefixedName | UnprefixedName
+     * PrefixedName    ::=     Prefix ':' LocalPart
+     * UnprefixedName  ::=     LocalPart
+     * Prefix          ::=     NCName
+     * LocalPart       ::=     NCName
+     * </pre>
+     *
+     * @see <a href="https://www.w3.org/TR/xml-names/#ns-qualnames">Namespaces in XML 1.0 - 4 Qualified Names</a>
+     * @see <a href="https://www.w3.org/TR/2006/REC-xml-names11-20060816/#ns-qualnames">Namespaces in XML 1.1 - 4 Qualified Names</a>
+     */
+    private static final Pattern RE_QNAME = Pattern.compile("(?:"+NCNAME+":)?"+NCNAME);
+
     static {
         try {
             String defaultSingletonClass = "org.dom4j.util.SimpleSingleton";
@@ -73,6 +150,11 @@ public class QName implements Serializab
         this.name = (name == null) ? "" : name;
         this.namespace = (namespace == null) ? Namespace.NO_NAMESPACE
                 : namespace;
+       if (this.namespace.equals(Namespace.NO_NAMESPACE)) {
+               validateName(this.name);
+       } else {
+               validateNCName(this.name);
+       }
     }
 
     public QName(String name, Namespace namespace, String qualifiedName) {
@@ -80,6 +162,8 @@ public class QName implements Serializab
         this.qualifiedName = qualifiedName;
         this.namespace = (namespace == null) ? Namespace.NO_NAMESPACE
                 : namespace;
+       validateNCName(this.name);
+       validateQName(this.qualifiedName);
     }
 
     public static QName get(String name) {
@@ -253,6 +337,24 @@ public class QName implements Serializab
         QNameCache cache = (QNameCache) singleton.instance();
         return cache;
     }
+
+    private static void validateName(String name) {
+           if (!RE_NAME.matcher(name).matches()) {
+                   throw new IllegalArgumentException(String.format("Illegal character in name: '%s'.", name));
+           }
+    }
+
+    protected static void validateNCName(String ncname) {
+           if (!RE_NCNAME.matcher(ncname).matches()) {
+                   throw new IllegalArgumentException(String.format("Illegal character in local name: '%s'.", ncname));
+           }
+    }
+
+    private static void validateQName(String qname) {
+           if (!RE_QNAME.matcher(qname).matches()) {
+                   throw new IllegalArgumentException(String.format("Illegal character in qualified name: '%s'.", qname));
+           }
+    }
 }
 
 
Index: dom4j/src/java/org/dom4j/tree/QNameCache.java
===================================================================
--- dom4j.orig/src/java/org/dom4j/tree/QNameCache.java
+++ dom4j/src/java/org/dom4j/tree/QNameCache.java
@@ -164,6 +164,8 @@ public class QNameCache {
 
         if (index < 0) {
             return get(qualifiedName, Namespace.get(uri));
+        } else if (index == 0){
+            throw new IllegalArgumentException("Qualified name cannot start with ':'.");
         } else {
             String name = qualifiedName.substring(index + 1);
             String prefix = qualifiedName.substring(0, index);
Index: dom4j/src/test/org/dom4j/AllowedCharsTest.java
===================================================================
--- /dev/null
+++ dom4j/src/test/org/dom4j/AllowedCharsTest.java
@@ -0,0 +1,78 @@
+package org.dom4j;^M
+^M
+import org.testng.annotations.Test;^M
+^M
+/**^M
+ * @author Filip Jirsak^M
+ */^M
+public class AllowedCharsTest {^M
+    @Test^M
+    public void localName() {^M
+        QName.get("element");^M
+        QName.get(":element");^M
+        QName.get("elem:ent");^M
+    }^M
+^M
+    @Test(expectedExceptions = IllegalArgumentException.class)^M
+    public void localNameFail() {^M
+        QName.get("!element");^M
+    }^M
+^M
+    @Test^M
+    public void qname() {^M
+        QName.get("element", "http://example.com/namespace");^M
+        QName.get("ns:element", "http://example.com/namespace");^M
+    }^M
+^M
+    @Test(expectedExceptions = IllegalArgumentException.class)^M
+    public void qnameFail1() {^M
+        QName.get("ns:elem:ent", "http://example.com/namespace");^M
+    }^M
+^M
+    @Test(expectedExceptions = IllegalArgumentException.class)^M
+    public void qnameFail2() {^M
+        QName.get(":nselement", "http://example.com/namespace");^M
+    }^M
+^M
+    @Test(expectedExceptions = IllegalArgumentException.class)^M
+    public void createElementLT() {^M
+        DocumentHelper.createElement("element<name");^M
+    }^M
+^M
+    @Test(expectedExceptions = IllegalArgumentException.class)^M
+    public void createElementGT() {^M
+        DocumentHelper.createElement("element>name");^M
+    }^M
+^M
+    @Test(expectedExceptions = IllegalArgumentException.class)^M
+    public void createElementAmpersand() {^M
+        DocumentHelper.createElement("element&name");^M
+    }^M
+^M
+    @Test(expectedExceptions = IllegalArgumentException.class)^M
+    public void addElement() {^M
+        Element root = DocumentHelper.createElement("root");^M
+        root.addElement("element>name");^M
+    }^M
+^M
+    @Test(expectedExceptions = IllegalArgumentException.class)^M
+    public void addElementQualified() {^M
+        Element root = DocumentHelper.createElement("root");^M
+        root.addElement("element>name", "http://example.com/namespace");^M
+    }^M
+^M
+    @Test(expectedExceptions = IllegalArgumentException.class)^M
+    public void addElementQualifiedPrefix() {^M
+        Element root = DocumentHelper.createElement("root");^M
+        root.addElement("ns:element>name", "http://example.com/namespace");^M
+    }^M
+^M
+    @Test(expectedExceptions = IllegalArgumentException.class)^M
+    public void addElementPrefix() {^M
+        Element root = DocumentHelper.createElement("root");^M
+        root.addElement("ns>:element", "http://example.com/namespace");^M
+    }^M
+^M
+    //TODO It is illegal to create element or attribute with namespace prefix and empty namespace IRI.^M
+    //See https://www.w3.org/TR/2006/REC-xml-names11-20060816/#scoping^M
+}^M

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File dom4j-CVE-2018-1000632.patch of Package dom4j (Revision d322aa00f91d0da34ed22978a0f9d8e7)

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