Update: A new blog post has been published as a follow up to this article : ESI Part 2: Abusing specific implementations. Abusing Caching Servers into SSRF and Client-Side Attacks While conducting a security assessment, we noticed an unexpected behavior in the...
At the moment, Java deserialization vulnerabilities are becoming well known by vendors and attackers. Nevertheless, pentesters will still encounter these types of vulnerabilities. The low-hanging fruits can be identified with the current tools. Most of the available...
Update: A follow-up article was published on the detection and the reverse-engineering of those binary web shells. In this article, we will be looking at a new exploitation technique using the default OPcache engine from PHP 7. Using this attack vector, we can bypass...
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