Popular Vulnerable Code

Beer

Beer,it’s the best damn drink in the world.
-Jack Nicholson

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<pre lang="java"> 
   
  public static String escapeHTMLTags(String in){
    if (in == null){
      return null;
    }
    char ch;
    int i = 0;
    int last = 0;
    char[] input = in.toCharArray();
    int len = input.length;
    StringBuilder out = new StringBuilder((int)(len * 1.3));
    for (;i <len;i++){
      ch = input[i];
      if (ch >'>'){
      }
      else if (ch == '<'){
        if (i >last){
          out.append(input,last,i - last);
        }
        last = i + 1;
        out.append(LT_ENCODE);
      }
      else if (ch == '>'){
        if (i >last){
          out.append(input,last,i - last);
        }
        last = i + 1;
        out.append(GT_ENCODE);
      }
      else if (ch == '\n'){
        if (i >last){
          out.append(input,last,i - last);
        }
        last = i + 1;
        out.append("<br>");
      }
    }
    if (last == 0){
      return in;
    }
    if (i >last){
      out.append(input,last,i - last);
    }
    return out.toString();
  }

... <snip>...

<% // get parameters
  String username = ParamUtils.getParameter(request,"username");

  String password = ParamUtils.getParameter(request,"password");
  String url = ParamUtils.getParameter(request,"url");
  url = org.jivesoftware.util.StringUtils.escapeHTMLTags(url);

  // SSO between cluster nodes
  String secret = ParamUtils.getParameter(request,"secret");
  String nodeID = ParamUtils.getParameter(request,"nodeID");
  String nonce = ParamUtils.getParameter(request,"nonce");

  // The user auth token:
  AuthToken authToken = null;

  // Check the request/response for a login token

  Map<String,String>errors = new HashMap<String,String>();

  if (ParamUtils.getBooleanParameter(request,"login")){
    String loginUsername = username;
    if (loginUsername != null){
      loginUsername = JID.escapeNode(loginUsername);
    }
    try{
      if (secret != null &&nodeID != null){
        if (StringUtils.hash(AdminConsolePlugin.secret).equals(secret) &&ClusterManager.isClusterMember(Base64.decode(nodeID,Base64.URL_SAFE))){
          authToken = new AuthToken(loginUsername);
        }
        else if ("clearspace".equals(nodeID) &&ClearspaceManager.isEnabled()){
          ClearspaceManager csmanager = ClearspaceManager.getInstance();
          String sharedSecret = csmanager.getSharedSecret();
          if (nonce == null || sharedSecret == null || !csmanager.isValidNonce(nonce) ||
              !StringUtils.hash(loginUsername + ":"+ sharedSecret + ":"+ nonce).equals(secret)){
            throw new UnauthorizedException("SSO failed. Invalid secret was provided");
          }
          authToken = new AuthToken(loginUsername);
        }
        else{
          throw new UnauthorizedException("SSO failed. Invalid secret or node ID was provided");
        }
      }
      else{
        // Check that a username was provided before trying to verify credentials
        if (loginUsername != null){
          if (LoginLimitManager.getInstance().hasHitConnectionLimit(loginUsername,request.getRemoteAddr())){
            throw new UnauthorizedException("User '"+ loginUsername +"' or address '"+ request.getRemoteAddr() + "' has his login attempt limit.");
          }
          if (!AdminManager.getInstance().isUserAdmin(loginUsername,true)){
            throw new UnauthorizedException("User '"+ loginUsername + "' not allowed to login.");
          }
          authToken = AuthFactory.authenticate(loginUsername,password);
        }
        else{
          errors.put("unauthorized",LocaleUtils.getLocalizedString("login.failed.unauthorized"));
        }
      }

... <snip>...

  // Escape HTML tags in username to prevent cross-site scripting attacks. This
  // is necessary because we display the username in the page below.
  username = org.jivesoftware.util.StringUtils.escapeHTMLTags(username);

%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>
 <title><%= AdminConsole.getAppName() %><fmt:message key="login.title"/></title>
 <script language="JavaScript"type="text/javascript">
  <!--
  // break out of frames
  if (self.parent.frames.length != 0){
   self.parent.location=document.location;
  }
    function updateFields(el){
      if (el.checked){
        document.loginForm.username.disabled = true;
        document.loginForm.password.disabled = true;
      }
      else{
        document.loginForm.username.disabled = false;
        document.loginForm.password.disabled = false;
        document.loginForm.username.focus();
      }
    }
  //-->
 </script>
  <link rel="stylesheet"href="style/global.css"type="text/css">
  <link rel="stylesheet"href="style/login.css"type="text/css">
</head>

<body>

<form action="login.jsp"name="loginForm"method="post">

<%  if (url != null){try{%>

  <input type="hidden"name="url"value="<%= url %>">

<%  } catch (Exception e){Log.error(e);} } %>

<input type="hidden"name="login"value="true">

<div align="center">
  <!-- BEGIN login box -->
  <div id="jive-loginBox">
    
    <div align="center"id="jive-loginTable">

      <span id="jive-login-header"style="background:transparent url(images/login_logo.gif) no-repeat left;padding:29px 0 10px 205px;">
      <fmt:message key="admin.console"/>
      </span>

      <div style="text-align:center;width:380px;">
      <table cellpadding="0"cellspacing="0"border="0"align="center">
        <tr>
          <td align="right"class="loginFormTable">

            <table cellpadding="2"cellspacing="0"border="0">
            <noscript>
              <tr>
                <td colspan="3">
                  <table cellpadding="0"cellspacing="0"border="0">
                  <tr valign="top">
                    <td><img src="images/error-16x16.gif"width="16"height="16"border="0"alt=""vspace="2"></td>
                    <td><div class="jive-error-text"style="padding-left:5px;color:#cc0000;"><fmt:message key="login.error"/></div></td>
                  </tr>
                  </table>
                </td>
              </tr>
            </noscript>
            <%  if (errors.size() >0){%>
              <tr>
                <td colspan="3">
                  <table cellpadding="0"cellspacing="0"border="0">
                    <% for (String error:errors.values()){%>
                  <tr valign="top">
                    <td><img src="images/error-16x16.gif"width="16"height="16"border="0"alt=""vspace="2"></td>
                    <td><div class="jive-error-text"style="padding-left:5px;color:#cc0000;"><%= error%></div></td>
                  </tr>
                    <% } %>
                  </table>
                </td>
              </tr>
            <%  } %>
            <tr>
              <td><input type="text"name="username"size="15"maxlength="50"id="u01"value="<%= (username != null ? username:"") %>"></td>
              <td><input type="password"name="password"size="15"maxlength="50"id="p01"></td>
              <td align="center"><input type="submit"value="&nbsp;<fmt:message key="login.login"/>&nbsp;"></td>
            </tr>
            <tr valign="top">
              <td class="jive-login-label"><label for="u01"><fmt:message key="login.username"/></label></td>
              <td class="jive-login-label"><label for="p01"><fmt:message key="login.password"/></label></td>
              <td>&nbsp;</td>
            </tr>
            </table>
          </td>
        </tr>
        <tr>
          <td align="right">
            <div align="right"id="jive-loginVersion">
            <%= AdminConsole.getAppName() %>,<fmt:message key="login.version"/>:<%= AdminConsole.getVersionString() %>
            </div>
          </td>
        </tr>
      </table>
      </div>
    </div>

  </div>
  <!-- END login box -->
</div>

</form>

<script language="JavaScript"type="text/javascript">
<!--
  if (document.loginForm.username.value == '')  {
   document.loginForm.username.focus();
  } else{
    document.loginForm.password.focus();
  }
//-->
</script>

</body>
</html>
</pre>

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