Today’s gift in our advent calendar contains PHPKit, a German web content management system in development since early 2002. With its ~42,000 lines of code it is a rather small application and the latest version is 1.6.6. This post describes two severe vulnerabilities in the administration section that require a minimal user permission for exploitation.Read More
Serendipity is an easy to maintain blog engine. There are a lot of plugins that can be used to extend the functionality, this article will focus on its core though. With close to 125,000 lines it is a medium-sized web application. In this post, we will show how attackers can bypass existing security mechanisms which can lead to remote code execution attacks.Read More
Roundcube is a widely distributed open-source webmail software used by many organizations and companies around the globe. The mirror on SourceForge, for example, counts more than 260,000 downloads in the last 12 months1 which is only a small fraction of the actual users. Once Roundcube is installed on a server, it provides a web interface for authenticated users to send and receive emails with their web browser.
In this post, we show how a malicious user can remotely execute arbitrary commands on the underlying operating system, simply by writing an email in Roundcube 1.2.2 (>= 1.0). This vulnerability is highly critical because all default installations are affected. We urge all administrators to update the Roundcube installation to the latest version 1.2.3 as soon as possible.Read More
Expression Engine is a popular general purpose content management system that is used by thousands of individuals, organizations, and companies around the world. The open-source version has about 250,000 lines of code and is a medium-sized web application. In this post, we will examine a code reuse vulnerability that leads to remote code execution. This vulnerability type allows an attacker to partly control the applications logic and to chain existing code fragements.Read More
In today’s post, we would like to share some insights into our static code analysis engine RIPS that detected the security bugs described in the previous and upcoming calendar gifts. The engine has a long history and went through several generations before reaching its current performance. What does it actually do within the few seconds after you click on the scan button and the first vulnerability report pops up? How can a security vulnerability be automatically detected in source code? Let’s have a look.Read More