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Files from gabe_k

First Active2024-01-05
Last Active2024-04-30
Windows PspBuildCreateProcessContext Double-Fetch / Buffer Overflow
Posted Apr 30, 2024
Authored by gabe_k

Proof of concept code that demonstrates how the Windows kernel suffers from a privilege escalation vulnerability due to a double-fetch in PspBuildCreateProcessContext that leads to a stack buffer overflow.

tags | exploit, overflow, kernel, proof of concept
systems | windows
advisories | CVE-2024-26218
SHA-256 | 0d419f34140c82908299252d3794e80651aedada14ee132d75462cbcf8700e96
Windows NtQueryInformationThread Double-Fetch / Arbitrary Write
Posted Apr 30, 2024
Authored by gabe_k

Proof of concept code that demonstrates how the Windows kernel suffers from a privilege escalation vulnerability due to a double-fetch in NtQueryInformationThread that leads to an arbitrary write.

tags | exploit, arbitrary, kernel, proof of concept
systems | windows
advisories | CVE-2024-21345
SHA-256 | 17303e9dc06042a7d7b761657e3f97ac797834b1b9703bc726107b814b22b014
undefinedExploiting The NT Kernel In 24H2undefined
Posted Apr 30, 2024
Authored by gabe_k

This is the full Windows privilege escalation exploit produced from the blog Exploiting the NT Kernel in 24H2: New Bugs in Old Code and Side Channels Against KASLR.

tags | exploit, kernel
systems | windows
advisories | CVE-2024-21345, CVE-2024-26218
SHA-256 | 359dac8448d7ce433fa3541cbb436c20ba5d34c9e0efb99cd95d1c887c779304
Themebleed Windows 11 Themes Arbitrary Code Execution
Posted Jan 5, 2024
Authored by Spencer McIntyre, bwatters-r7, gabe_k | Site metasploit.com

When an unpatched Windows 11 host loads a theme file referencing an msstyles file, Windows loads the msstyles file, and if that file's PACKME_VERSION is 999, it then attempts to load an accompanying dll file ending in _vrf.dll. Before loading that file, it verifies that the file is signed. It does this by opening the file for reading and verifying the signature before opening the file for execution. Because this action is performed in two discrete operations, it opens the procedure for a time of check to time of use vulnerability. By embedding a UNC file path to an SMB server we control, the SMB server can serve a legitimate, signed dll when queried for the read, but then serve a different file of the same name when the host intends to load/execute the dll.

tags | exploit
systems | windows
advisories | CVE-2023-38146
SHA-256 | 44f044cbc901c8010a0b6712cedc87c1cc39134506044dd22466b8aac564f4b8
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