Newsletter 27/11/2022
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This machine contains a web application built with Spring Boot that is vulnerable to Server-Side Template Injection with a particular format. After that, in order to escalate privileges, we must analyze a Java program, enter some malicious metadata in a JPEG image, add an XML External Entity into a controlled XML file, break a log parser logic and finally wait for root to process the XML file and read its private SSH key
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sys_ptrace
. Patching
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nginx. Directory listing
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XML External Entity injection
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64-bit binary. Buffer Overflow. ret2libc. Bypass PIE and ASLR