From b4a63aad7f56486c164a15ae2477bcd251b0bb1b Mon Sep 17 00:00:00 2001
From: James Moger <james.moger@gitblit.com>
Date: Tue, 18 Mar 2014 21:10:48 -0400
Subject: [PATCH] Fix authentication security hole with external providers
---
src/main/java/com/gitblit/manager/AuthenticationManager.java | 111 ++++++++++++++++++++++++++++++++++++++-----------------
1 files changed, 77 insertions(+), 34 deletions(-)
diff --git a/src/main/java/com/gitblit/manager/AuthenticationManager.java b/src/main/java/com/gitblit/manager/AuthenticationManager.java
index cd4a258..4f3e652 100644
--- a/src/main/java/com/gitblit/manager/AuthenticationManager.java
+++ b/src/main/java/com/gitblit/manager/AuthenticationManager.java
@@ -150,7 +150,18 @@
@Override
public AuthenticationManager stop() {
+ for (AuthenticationProvider provider : authenticationProviders) {
+ try {
+ provider.stop();
+ } catch (Exception e) {
+ logger.error("Failed to stop " + provider.getClass().getSimpleName(), e);
+ }
+ }
return this;
+ }
+
+ public void addAuthenticationProvider(AuthenticationProvider prov) {
+ authenticationProviders.add(prov);
}
/**
@@ -191,7 +202,7 @@
flagWicketSession(AuthenticationType.CONTAINER);
logger.debug(MessageFormat.format("{0} authenticated by servlet container principal from {1}",
user.username, httpRequest.getRemoteAddr()));
- return user;
+ return validateAuthentication(user, AuthenticationType.CONTAINER);
} else if (settings.getBoolean(Keys.realm.container.autoCreateAccounts, false)
&& !internalAccount) {
// auto-create user from an authenticated container principal
@@ -203,7 +214,7 @@
flagWicketSession(AuthenticationType.CONTAINER);
logger.debug(MessageFormat.format("{0} authenticated and created by servlet container principal from {1}",
user.username, httpRequest.getRemoteAddr()));
- return user;
+ return validateAuthentication(user, AuthenticationType.CONTAINER);
} else if (!internalAccount) {
logger.warn(MessageFormat.format("Failed to find UserModel for {0}, attempted servlet container authentication from {1}",
principal.getName(), httpRequest.getRemoteAddr()));
@@ -224,7 +235,7 @@
flagWicketSession(AuthenticationType.CERTIFICATE);
logger.debug(MessageFormat.format("{0} authenticated by client certificate {1} from {2}",
user.username, metadata.serialNumber, httpRequest.getRemoteAddr()));
- return user;
+ return validateAuthentication(user, AuthenticationType.CERTIFICATE);
} else {
logger.warn(MessageFormat.format("Failed to find UserModel for {0}, attempted client certificate ({1}) authentication from {2}",
model.username, metadata.serialNumber, httpRequest.getRemoteAddr()));
@@ -246,7 +257,7 @@
flagWicketSession(AuthenticationType.COOKIE);
logger.debug(MessageFormat.format("{0} authenticated by cookie from {1}",
user.username, httpRequest.getRemoteAddr()));
- return user;
+ return validateAuthentication(user, AuthenticationType.COOKIE);
}
}
@@ -268,7 +279,7 @@
flagWicketSession(AuthenticationType.CREDENTIALS);
logger.debug(MessageFormat.format("{0} authenticated by BASIC request header from {1}",
user.username, httpRequest.getRemoteAddr()));
- return user;
+ return validateAuthentication(user, AuthenticationType.CREDENTIALS);
} else {
logger.warn(MessageFormat.format("Failed login attempt for {0}, invalid credentials from {1}",
username, httpRequest.getRemoteAddr()));
@@ -276,6 +287,27 @@
}
}
return null;
+ }
+
+ /**
+ * This method allows the authentication manager to reject authentication
+ * attempts. It is called after the username/secret have been verified to
+ * ensure that the authentication technique has been logged.
+ *
+ * @param user
+ * @return
+ */
+ protected UserModel validateAuthentication(UserModel user, AuthenticationType type) {
+ if (user == null) {
+ return null;
+ }
+ if (user.disabled) {
+ // user has been disabled
+ logger.warn("Rejected {} authentication attempt by disabled account \"{}\"",
+ type, user.username);
+ return null;
+ }
+ return user;
}
protected void flagWicketSession(AuthenticationType authenticationType) {
@@ -313,41 +345,52 @@
// try local authentication
if (user != null && user.isLocalAccount()) {
- UserModel returnedUser = null;
- if (user.password.startsWith(StringUtils.MD5_TYPE)) {
- // password digest
- String md5 = StringUtils.MD5_TYPE + StringUtils.getMD5(new String(password));
- if (user.password.equalsIgnoreCase(md5)) {
- returnedUser = user;
- }
- } else if (user.password.startsWith(StringUtils.COMBINED_MD5_TYPE)) {
- // username+password digest
- String md5 = StringUtils.COMBINED_MD5_TYPE
- + StringUtils.getMD5(username.toLowerCase() + new String(password));
- if (user.password.equalsIgnoreCase(md5)) {
- returnedUser = user;
- }
- } else if (user.password.equals(new String(password))) {
- // plain-text password
- returnedUser = user;
- }
- return returnedUser;
+ return authenticateLocal(user, password);
}
// try registered external authentication providers
- if (user == null) {
- for (AuthenticationProvider provider : authenticationProviders) {
- if (provider instanceof UsernamePasswordAuthenticationProvider) {
- user = provider.authenticate(usernameDecoded, password);
- if (user != null) {
- // user authenticated
- user.accountType = provider.getAccountType();
- return user;
- }
+ for (AuthenticationProvider provider : authenticationProviders) {
+ if (provider instanceof UsernamePasswordAuthenticationProvider) {
+ UserModel returnedUser = provider.authenticate(usernameDecoded, password);
+ if (returnedUser != null) {
+ // user authenticated
+ returnedUser.accountType = provider.getAccountType();
+ return validateAuthentication(returnedUser, AuthenticationType.CREDENTIALS);
}
}
}
- return user;
+
+ // could not authenticate locally or with a provider
+ return null;
+ }
+
+ /**
+ * Returns a UserModel if local authentication succeeds.
+ *
+ * @param user
+ * @param password
+ * @return a UserModel if local authentication succeeds, null otherwise
+ */
+ protected UserModel authenticateLocal(UserModel user, char [] password) {
+ UserModel returnedUser = null;
+ if (user.password.startsWith(StringUtils.MD5_TYPE)) {
+ // password digest
+ String md5 = StringUtils.MD5_TYPE + StringUtils.getMD5(new String(password));
+ if (user.password.equalsIgnoreCase(md5)) {
+ returnedUser = user;
+ }
+ } else if (user.password.startsWith(StringUtils.COMBINED_MD5_TYPE)) {
+ // username+password digest
+ String md5 = StringUtils.COMBINED_MD5_TYPE
+ + StringUtils.getMD5(user.username.toLowerCase() + new String(password));
+ if (user.password.equalsIgnoreCase(md5)) {
+ returnedUser = user;
+ }
+ } else if (user.password.equals(new String(password))) {
+ // plain-text password
+ returnedUser = user;
+ }
+ return validateAuthentication(returnedUser, AuthenticationType.CREDENTIALS);
}
/**
--
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