Apache Struts2 S2-052 (CVE-2017-9805)

In this post I'll describe how I customized a standard lgtm query to find a remote code execution vulnerability in Apache Struts. A more general announcement about this vulnerability can be found here. It has been assigned CVE-2017-9805, a security bulletin can be found here on the Struts website...

Apache Struts 2 REST Plugin XStream XML Request Deserialization RCE

The remote web application appears to use the Apache Struts 2 web framework. A remote code execution vulnerability exists in the REST plugin, which uses XStreamHandler to insecurely deserialize user-supplied input in XML requests. An unauthenticated, remote attacker can exploit this, via a...

CVE-2017-9804

In Apache Struts 2.3.7 through 2.3.33 and 2.5 through 2.5.12, if an application allows entering a URL in a form field and built-in URLValidator is used, it is possible to prepare a special URL which will be used to overload server process when performing validation of the URL. NOTE: this...

Patch Released for Critical Apache Struts Bug

The Apache Software Foundation has patched a critical remote code execution vulnerability affecting all versions of the popular application development framework Struts since 2008. All web applications using the framework’s REST plugin are vulnerable. Users are advised to upgrade their Apache...

Critical Flaw in Apache Struts2 Lets Hackers Take Over Web Servers

Security researchers have discovered a critical remote code execution vulnerability in the popular Apache Struts web application framework, allowing a remote attacker to run malicious code on the affected servers. Apache Struts is a free, open-source, Model-View-Controller MVC framework for...

Apache Struts 2 REST Plugin XStream RCE

Apache Struts versions 2.1.2 - 2.3.33 and Struts 2.5 - Struts 2.5.12, using the REST plugin, are vulnerable to a Java deserialization attack in the XStream library. Module Options msf use exploit/multi/http/struts2/restxstream msf undefinedrestxstream show actions ...actions... msf...

PT-2017-2795

Name of the Vulnerable Software and Affected Versions Apache Struts versions 2.1.1 through 2.3.x before 2.3.34 Apache Struts versions 2.5.x before 2.5.13 Description The issue is related to the REST Plugin in Apache Struts, which uses an XStreamHandler with an instance of XStream for...

PT-2017-2794

Name of the Vulnerable Software and Affected Versions Apache Struts versions 2.0.0 through 2.3.33 Apache Struts versions 2.5 through 2.5.10.1 Description The issue exists due to incorrect handling of Object Graph Navigation Language OGNL expressions. Exploitation may allow a remote attacker to...

Apache Struts 2.1.x >= 2.1.2 / 2.2.x / 2.3.x < 2.3.34 / 2.5.x < 2.5.13 Multiple Vulnerabilities (S2-050 - S2-053)

The version of Apache Struts running on the remote host is 2.1.x subsequent or equal to 2.1.2, 2.2.x, 2.3.x prior to 2.3.34, or 2.5.x prior to 2.5.13. It is, therefore, affected by multiple vulnerabilities: - A remote code execution vulnerability in the REST plugin. The Struts REST plugin uses an...

US Government Site Was Hosting Ransomware

As recently as Wednesday afternoon, a U.S. government website was hosting a malicious JavaScript downloader that led victims to installations of Cerber ransomware. Researcher Ankit Anubhav of NewSky Security tweeted the discovery Wednesday, and within hours, the malware link was taken down. It’s...

Apache Struts 2.3.x Struts 1 plugin RCE (remote)

The Struts 1 plugin in Apache Struts 2.3.x is affected by a remote code execution vulnerability via a malicious field value passed in a raw message to the ActionMessage class. %NASLMINLEVEL 70300 C Tenable Network Security, Inc. include'deprecatednasllevel.inc'; include'compat.inc'; if descriptio...

Apache Struts 'top' Object Access Security Bypass Vulnerability (S2-026) - Linux

Apache Struts is prone to a security bypass vulnerability. This VT has been deprecated and merged into the VT SPDX-FileCopyrightText: 2017 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier...

Apache Struts Security Update (S2-026)

Apache Struts is prone to a security bypass vulnerability. Copyright C 2017 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free software; yo...

CVE-2015-5209

Apache Struts 2.x before 2.3.24.1 allows remote attackers to manipulate Struts internals, alter user sessions, or affect container settings via vectors involving a top object...

Design/Logic Flaw

Apache Struts 2.x before 2.3.24.1 allows remote attackers to manipulate Struts internals, alter user sessions, or affect container settings via vectors involving a top object...

CVE-2015-5209

Apache Struts 2.x before 2.3.24.1 allows remote attackers to manipulate Struts internals, alter user sessions, or affect container settings via vectors involving a top object...

CVE-2015-5209

CVE-2015-5209 affects Apache Struts 2.x and allows a remote attacker to gain unauthorized access by manipulating a special top-level object in Struts' ValueStack, enabling manipulation of internal settings and user sessions. Public advisories and IBM notices enumerate affected IBM products (IBM S...

CVE-2015-5209

Apache Struts 2.x before 2.3.24.1 allows remote attackers to manipulate Struts internals, alter user sessions, or affect container settings via vectors involving a top object...

CVE-2017-9787

When using a Spring AOP functionality to secure Struts actions it is possible to perform a DoS attack. Solution is to upgrade to Apache Struts version 2.5.12 or 2.3.33...

CVE-2017-7672

If an application allows enter an URL in a form field and built-in URLValidator is used, it is possible to prepare a special URL which will be used to overload server process when performing validation of the URL. Solution is to upgrade to Apache Struts version 2.5.12...