Compass Security Blog

Offensive Defense

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BeanShell puts Java Application Servers at Risk

Developers increasingly integrate BeanShell support into web applications to provide end users and administrators with a simple extension framework. But be warned! BeanShell support without appropriate access control will put the hosting web server at severe risk. An attacker could easily execute operating system calls and without appropriate system hardening such an attack will immediately result in full system compromise. The […]

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Retrospective about cache snooping

As it is known since at least 2006, a website is able to identify the domains a user previously visited, with some simple CSS hacks. This had great privacy implications, and browsers took steps to eliminate this problem. But in December 2011, lcamtuf presented a new proof of concept based on cache timings, which basically does the […]

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