Microsoft Windows Kernel - Bitmap Handling Use-After-Free (MS15-061) (1)

Source: https://code.google.com/p/google-security-research/issues/detail?id=293 Platform: Win7 32-bit. trigger.cpp should fire the issue, with two caveats: - PoC will NOT work if compiled as a debug build. - PoC will trigger the condition every time but the subsequent corruption might not cause a...

Microsoft Windows Kernel - 'NtGdiStretchBlt' Pool Buffer Overflow (MS15-097)

Source: https://code.google.com/p/google-security-research/issues/detail?id=415 --- Tested on Win 7 32-bit with Special Pool enabled. Multiple pool buffer overflows can be triggered through the NtGdiStretchBlt system call. The attached PoC demonstrates a write overflow and another read over flow...

Microsoft Windows Kernel - Null Pointer Dereference with Window Station and Clipboard (MS15-061)

Source: https://code.google.com/p/google-security-research/issues/detail?id=294 Platform: Win7 32-bit. trigger.cpp should fire the issue, with a caveat - PoC might NOT work if compiled as a debug build. windbg.txt is a sample crash log. Analysis from Nils: --- please find attached a C trigger,...

Microsoft Windows Kernel - Pool Buffer Overflow Drawing Caption Bar (MS15-061)

Source: https://code.google.com/p/google-security-research/issues/detail?id=321 The PoC triggers a crashes due to a pool buffer overflow while drawing the caption bar of window. The trigger depends on the current window layout and resolution. The PoC takes an offset on the command line to be able...

Microsoft Windows Kernel - Use-After-Free with Cursor Object (MS15-097)

Microsoft Windows Kernel - Use-After-Free with Cursor Object MS15-097 Source: https://code.google.com/p/google-security-research/issues/detail?id=457 --- The attached testcase crashes Win 7 with Special Pool enabled while accessing the freed global cursor object gpqCursor​. See poc.cpp for...

Microsoft Windows Kernel - Use-After-Free with Cursor Object (MS15-097)

Source: https://code.google.com/p/google-security-research/issues/detail?id=457 --- The attached testcase crashes Win 7 with Special Pool enabled while accessing the freed global cursor object gpqCursor. See poc.cpp for instructions on how to compile and run. Proof of Concept:...

Microsoft Windows Kernel - win32k!vSolidFillRect Buffer Overflow (MS15-061)

Microsoft Windows Kernel - win32k!vSolidFillRect Buffer Overflow MS15-061 Source: https://code.google.com/p/google-security-research/issues/detail?id=313 The PoC triggers a pool buffer overflow in win32k!vSolidFillRect. ​When using Special Pool we get the crash immediately on the overwrite. Witho...

Microsoft Windows Kernel - 'win32k!vSolidFillRect' Buffer Overflow (MS15-061)

Source: https://code.google.com/p/google-security-research/issues/detail?id=313 The PoC triggers a pool buffer overflow in win32k!vSolidFillRect. When using Special Pool we get the crash immediately on the overwrite. Without Special Pool we often get a crash in the same function, but sometimes it...

Microsoft Windows Kernel - Use-After-Free with Printer Device Contexts (MS15-097)

Source: https://code.google.com/p/google-security-research/issues/detail?id=433 --- The attached PoC demonstrates a UAF condition with printer device contexts. The PoC will trigger on Win 7 32-bit with Special Pool enabled. --- Proof of Concept:...

Microsoft Windows Kernel - 'FlashWindowEx​' Memory Corruption (MS15-097)

Source: https://code.google.com/p/google-security-research/issues/detail?id=475 --- The attached PoC triggers a wild write on Win 7 32-bit with Special Pool enabled on win32k.sys. --- Proof of Concept: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/38276.zip...

Enabling QR codes in Internet Explorer, or a story of a cross-platform memory disclosure

Posted by Mateusz Jurczyk of Google Project Zero In the previous series of posts parts 1 2 3 4, we discussed the exploitation process of a serious “blend” vulnerability CVE-2015-0093 / CVE-2015-3052, which was special in that it provided the attacker with an extremely powerful primitive arbitrary...

Microsoft Windows Win32k Elevation of Privilege Vulnerability (CNVD-2015-05971)

Microsoft Windows is a series of operating systems released by the American company Microsoft. An elevation of privilege vulnerability exists in the Microsoft Windows kernel mode driver that can be exploited by a local attacker to run arbitrary code in kernel mode...

Microsoft Windows Win32k Elevation of Privilege Vulnerability

Microsoft Windows is a series of operating systems released by the American company Microsoft. An elevation of privilege vulnerability exists in the Microsoft Windows kernel mode driver and can be exploited by an attacker to run arbitrary code in kernel mode...

Microsoft Windows Kernel Local Security Bypass Vulnerability

Microsoft Windows Kernel is a dynamic link library file in Windows. A local security bypass vulnerability exists in Microsoft Windows Kernel, which can be exploited by an attacker to bypass certain security restrictions and perform unauthorized operations...

Microsoft Windows Kernel Mode Driver Elevation of Privilege Vulnerability (CNVD-2015-05921)

Microsoft Windows Kernel Mode Driver is a monitor driver. An elevation of privilege vulnerability exists in Microsoft Windows Kernel Mode Driver, which can be exploited by an attacker to elevate privileges and execute arbitrary code...

Microsoft Windows Kernel Mode Driver Elevation of Privilege Vulnerability

Microsoft Windows Kernel Mode Driver is a monitor driver. An elevation of privilege vulnerability exists in Microsoft Windows Kernel Mode Driver, which can be exploited by an attacker to elevate privileges and execute arbitrary code...

Windows win32k.sys TTF Font Processing win32k!fsc_BLTHoriz Out-of-Bounds Pool Write Exploit

Exploit for windows platform in category dos / poc Source: https://code.google.com/p/google-security-research/issues/detail?id=402&can=1 We have encountered a Windows kernel crash in the win32k!fscBLTHoriz function while processing corrupted TTF font files, such as: ---...

Windows win32k.sys TTF Font Processing win32k!fsc_RemoveDups Out-of-Bounds Pool Memory Access

Exploit for windows platform in category dos / poc Source: https://code.google.com/p/google-security-research/issues/detail?id=401&can=1 We have encountered a Windows kernel crash in the win32k!fscRemoveDups function while processing corrupted TTF font files, such as: --- PAGEFAULTINNONPAGEDAREA ...

Windows ATMFD.DLL CharString Stream Out-of-Bounds Reads Exploit

Exploit for windows platform in category dos / poc Source: https://code.google.com/p/google-security-research/issues/detail?id=382&can=1 We have encountered a number of Windows kernel crashes in the ATMFD.DLL OpenType driver while processing corrupted OTF font files, such as: ---...

Microsoft Windows - win32k.sys TTF Font Processing IUP[] Program Instruction Pool-Based Buffer Overflow

Microsoft Windows - win32k.sys TTF Font Processing IUP Program Instruction Pool-Based Buffer Overflow Source: https://code.google.com/p/google-security-research/issues/detail?id=368&can=1 We have encountered a number of Windows kernel crashes in the win32k!itrpIUP function a handler of the IUP TT...