New SignDrop Zero-Day Exploit Turns Windows CLFS Security Feature Into SYSTEM Access
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Public exploit code released earlier this week claims that a local Windows user can gain SYSTEM privileges through the Common Log File System driver. The proof of concept, called SignDrop, targets a log-authentication feature added to the driver last year. It abuses how clfs.sys creates companion files when a privileged process opens a prepared log, using path redirection to take control of
Summary from The Hacker News.
Explained
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- ConceptZero-dayA flaw attackers exploit before the vendor has a fix: defenders have had zero days to patch.
- ConceptProof of conceptA demonstration that a flaw can be exploited, usually published by researchers.
- ConceptExploitCode or a technique that turns a software flaw into something an attacker can actually use.
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