OSCP-Prep

This is a comprehensive guide for information security infosec professionals, particularly those preparing for the OSCP Offensive Security Certified Professional exam. The guide is a collection of various files, including a PDF document, a text file, and a set of cheat sheets. The PDF document,...

Xen: A transaction conflict can crash C Xenstored (XSA-440)

When a transaction is committed, C Xenstored will first check the quota is correct before attempting to commit any nodes. It would be possible that accounting is temporarily negative if a node has been removed outside of the transaction. Unfortunately, some versions of C Xenstored are assuming th...

Guests can cause Xenstore crash via soft reset

ISSUE DESCRIPTION When a guest issues a "Soft Reset" e.g. for performing a kexec the libxl based Xen toolstack will normally perform a XSRELEASE Xenstore operation. Due to a bug in xenstored this can result in a crash of xenstored. Any other use of XSRELEASE will have the same impact. IMPACT A...

Iran Targets Mideast Oil with ZeroCleare Wiper Malware

A freshly-discovered wiper malware dubbed “ZeroCleare” has been deployed to target the energy and industrial sectors in the Middle East. According to IBM’s X-Force Incident Response and Intelligence Services IRIS, ZeroCleare so-named because of the program database pathname of its binary file was...