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CVE-2023-29204: XWIKI-19994: False positive redirect checking · xwiki/xwiki-platform@e4f7f68

XWiki Commons are technical libraries common to several other top level XWiki projects. It is possible to bypass the existing security measures put in place to avoid open redirect by using a redirect such as //mydomain.com (i.e. omitting the http:). It was also possible to bypass it when using URL such as http:/mydomain.com. The problem has been patched on XWiki 13.10.10, 14.4.4 and 14.8RC1.

CVE
#web#apache#redis#java

@@ -0,0 +1,123 @@ /* * See the NOTICE file distributed with this work for additional * information regarding copyright ownership. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package com.xpn.xwiki.web;
import java.io.IOException; import java.net.URL;
import javax.servlet.http.HttpServletResponse;
import org.apache.ecs.wml.U; import org.junit.jupiter.api.BeforeEach; import org.junit.jupiter.api.Test; import org.xwiki.component.manager.ComponentManager; import org.xwiki.test.annotation.BeforeComponent; import org.xwiki.test.junit5.mockito.ComponentTest; import org.xwiki.test.junit5.mockito.InjectMockComponents; import org.xwiki.test.junit5.mockito.MockComponent; import org.xwiki.test.mockito.MockitoComponentManager; import org.xwiki.url.URLSecurityManager;
import static org.junit.jupiter.api.Assertions.*; import static org.mockito.ArgumentMatchers.any; import static org.mockito.Mockito.mock; import static org.mockito.Mockito.never; import static org.mockito.Mockito.verify; import static org.mockito.Mockito.when;
/** * Tests for {@link XWikiServletResponse}. * * @version $Id$ */ @ComponentTest class XWikiServletResponseTest { @MockComponent private URLSecurityManager urlSecurityManager;
private XWikiServletResponse servletResponse; private HttpServletResponse httpServletResponse;
@BeforeComponent void beforeComponent(MockitoComponentManager mockitoComponentManager) throws Exception { mockitoComponentManager.registerComponent(ComponentManager.class, "context", mockitoComponentManager); Utils.setComponentManager(mockitoComponentManager); }
@BeforeEach void setup() { this.httpServletResponse = mock(HttpServletResponse.class); this.servletResponse = new XWikiServletResponse(this.httpServletResponse); }
@Test void sendRedirect() throws IOException { this.servletResponse.sendRedirect(“”); verify(this.httpServletResponse, never()).sendRedirect(any());
this.servletResponse.sendRedirect(“/xwiki/\n/something/”); verify(this.httpServletResponse, never()).sendRedirect(any());
this.servletResponse.sendRedirect(“//xwiki.org/xwiki/something/”); verify(this.httpServletResponse, never()).sendRedirect(any());
String redirect = "http://xwiki.org/xwiki/something/"; URL redirectUrl = new URL(redirect); when(this.urlSecurityManager.isDomainTrusted(redirectUrl)).thenReturn(false); this.servletResponse.sendRedirect(redirect); verify(this.httpServletResponse, never()).sendRedirect(any()); verify(this.urlSecurityManager).isDomainTrusted(redirectUrl);
redirect = "http:/xwiki.com/xwiki/something/"; redirectUrl = new URL(redirect); when(this.urlSecurityManager.isDomainTrusted(redirectUrl)).thenReturn(false); this.servletResponse.sendRedirect(redirect); verify(this.httpServletResponse, never()).sendRedirect(any()); verify(this.urlSecurityManager).isDomainTrusted(redirectUrl);
redirect = "https://floo"; redirectUrl = new URL(redirect); when(this.urlSecurityManager.isDomainTrusted(redirectUrl)).thenReturn(false); this.servletResponse.sendRedirect(redirect); verify(this.httpServletResponse, never()).sendRedirect(any()); verify(this.urlSecurityManager).isDomainTrusted(redirectUrl);
redirect = "ftp://xwiki.org/xwiki/something/"; redirectUrl = new URL(redirect); when(this.urlSecurityManager.isDomainTrusted(redirectUrl)).thenReturn(false); this.servletResponse.sendRedirect(redirect); verify(this.httpServletResponse, never()).sendRedirect(any()); verify(this.urlSecurityManager).isDomainTrusted(redirectUrl);
this.servletResponse.sendRedirect(“/xwiki/something/”); verify(this.httpServletResponse).sendRedirect(“/xwiki/something/”);
redirect = "http://xwiki.org/foo/"; redirectUrl = new URL(redirect); when(this.urlSecurityManager.isDomainTrusted(redirectUrl)).thenReturn(true); this.servletResponse.sendRedirect(redirect); verify(this.httpServletResponse).sendRedirect(redirect); verify(this.urlSecurityManager).isDomainTrusted(redirectUrl); } }

Related news

GHSA-xwph-x6xj-wggv: org.xwiki.platform:xwiki-platform-oldcore Open Redirect vulnerability

### Impact It is possible to bypass the existing security measures put in place to avoid open redirect by using a redirect such as `//mydomain.com` (i.e. omitting the `http:`). It was also possible to bypass it when using URL such as `http:/mydomain.com`. ### Patches The problem has been patched on XWiki 13.10.10, 14.4.4 and 14.8RC1. ### Workarounds The only way to workaround the bug is by providing a patched jar of xwiki-platform-oldcore containing the following changes: https://github.com/xwiki/xwiki-platform/commit/e4f7f68e93cb08c25632c126356d218abf192d1e#diff-c445f288d5d63424f56ef13f65514ab4e174a72e979b53b88197c2b7def267cf. ### References * Jira ticket of the reported vulnerability: https://jira.xwiki.org/browse/XWIKI-19994 * Jira ticket of the original mechanism put in place to prevent open redirect: https://jira.xwiki.org/browse/XWIKI-10309 * Original advisory about open redirect: https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-jp55-vvmf-63mv ### For ...

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