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Microsoft Windows Kernel cng.sys Buffer Overflow

Microsoft Windows Kernel cng.sys Buffer Overflow
Posted Oct 30, 2020
Authored by Mateusz Jurczyk, Google Security Research, hawkes

The Microsoft Windows Kernel Cryptography Driver (cng.sys) exposes a \Device\CNG device to user-mode programs and supports a variety of IOCTLs with non-trivial input structures. It constitutes a locally accessible attack surface that can be exploited for privilege escalation (such as sandbox escape).

tags | exploit, kernel
systems | windows
advisories | CVE-2020-17087
SHA-256 | dcd9bb74f157ccd45992a6aeffd77f590ad19684a1b4e9e165f72d39d919d700
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