Xen vCPU context-switch implementation process security bypass vulnerability

Xen is an open source virtual machine monitor product developed at the University of Cambridge in the United Kingdom. A security vulnerability in Xen's vCPU context-switch implementation allows an attacker to exploit the vulnerability to compromise ASLR and other protection mechanisms...

Windows Kernel pool memory disclosure in nt!NtNotifyChangeDirectoryFile(CVE-2017-0299)

We have discovered that the nt!NtNotifyChangeDirectoryFile system call discloses portions of uninitialized pool memory to user-mode clients, due to output structure alignment holes. On our test Windows 10 32-bit workstation, an example layout of the output buffer is as follows: --- cut ---...

Windows Kernel stack memory disclosure in nt!NtQueryInformationJobObject(CVE-2017-8479)

We have discovered that the nt!NtQueryInformationJobObject system call corresponding to the documented QueryInformationJobObject API function called with the 28 information class discloses portions of uninitialized kernel stack memory to user-mode clients. The specific name of the 28 information...

Microsoft Windows Kernel 'Win32k.sys' Local Information Disclosure Vulnerability(CVE-2017-8471)

We have discovered that it is possible to disclose portions of uninitialized kernel stack memory to user-mode applications in Windows 7-10 through the win32k!NtGdiGetOutlineTextMetricsInternalW system call. The system call returns an 8-byte structure back to ring-3 through the 4th parameter, as...

Microsoft Windows - nt!NtQueryInformationWorkerFactory (WorkerFactoryBasicInformation) Kernel Stack Memory Disclosure

Microsoft Windows - nt!NtQueryInformationWorkerFactory WorkerFactoryBasicInformation Kernel Stack Memory Disclosure / Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1214&desc=2 We have discovered that the nt!NtQueryInformationWorkerFactory system call called with the...

Microsoft Windows - nt!NtQueryInformationResourceManager (information class 0) Kernel Stack Memory Disclosure

Microsoft Windows - nt!NtQueryInformationResourceManager information class 0 Kernel Stack Memory Disclosure / Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1207 We have discovered that the nt!NtQueryInformationResourceManager system call called with the 0 information class...

Microsoft Windows - nt!NtQueryInformationProcess (ProcessVmCounters) Kernel Stack Memory Disclosure

Microsoft Windows - nt!NtQueryInformationProcess ProcessVmCounters Kernel Stack Memory Disclosure / Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1190&desc=2 We have discovered that the nt!NtQueryInformationProcess system call called with the ProcessVmCounters information clas...

Microsoft Windows - IOCTL_DISK_GET_DRIVE_GEOMETRY_EX Kernel partmgr Pool Memory Disclosure

Microsoft Windows - IOCTLDISKGETDRIVEGEOMETRYEX Kernel partmgr Pool Memory Disclosure / Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1156&desc=2 We have discovered that the handler of the IOCTLDISKGETDRIVEGEOMETRYEX IOCTL in partmgr.sys discloses portions of uninitialized poo...

Microsoft Windows - IOCTL_DISK_GET_DRIVE_LAYOUT_EX Kernel partmgr Pool Memory Disclosure Exploit

Exploit for windows platform in category dos / poc / Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1159 We have discovered that the handler of the IOCTLDISKGETDRIVELAYOUTEX IOCTL in partmgr.sys discloses portions of uninitialized pool memory to user-mode clients. The issue can...

Microsoft Windows - nt!NtNotifyChangeDirectoryFile Kernel Pool Memory Disclosure

Microsoft Windows - nt!NtNotifyChangeDirectoryFile Kernel Pool Memory Disclosure / Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1169 We have discovered that the nt!NtNotifyChangeDirectoryFile system call discloses portions of uninitialized pool memory to user-mode clients, du...

Microsoft Windows - 'IOCTL_DISK_GET_DRIVE_LAYOUT_EX' Kernel partmgr Pool Memory Disclosure

/ Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1159 We have discovered that the handler of the IOCTLDISKGETDRIVELAYOUTEX IOCTL in partmgr.sys discloses portions of uninitialized pool memory to user-mode clients. The issue can be reproduced by running the attached...

x86: PKRU and BND* leakage between vCPU-s

ISSUE DESCRIPTION Memory Protection Extensions MPX and Protection Key PKU are features in newer processors, whose state is intended to be per-thread and context switched along with all other XSAVE state. Xen's vCPU context switch code would save and restore the state only if the guest had set the...

CVE-2017-1000375

NetBSD maps the run-time link-editor ld.so directly below the stack region, even if ASLR is enabled, this allows attackers to more easily manipulate memory leading to arbitrary code execution. This affects NetBSD 7.1 and possibly earlier versions...

Security update for the Windows Kernel information disclosure vulnerability in Windows Server 2008: August 8, 2017

Security update for the Windows Kernel information disclosure vulnerability in Windows Server 2008: August 8, 2017 Summary An information disclosure vulnerability exists when the Windows kernel fails to properly initialize a memory address, allowing an attacker to retrieve information that could...

Multiple Quick Heal Product Security Bypass Vulnerabilities

Quick Heal Internet Security, Quick Heal Total Security and Quick Heal AntiVirus Pro are antivirus programs from Quick Heal India. A security vulnerability exists in the PE file in several Quick Heal products due to the program's failure to use the ASLR/DEP protection mechanism. An attacker can...

CVE-2017-8776

Quick Heal Internet Security 10.1.0.316, Quick Heal Total Security 10.1.0.316, and Quick Heal AntiVirus Pro 10.1.0.316 have approximately 165 PE files in the default installation that do not use ASLR/DEP protection mechanisms that provide sufficient defense against directed attacks against the...

Shadow Brokers Fix for IBM Lotus Domino Released

IBM has released a patch for Lotus Domino to plug a security flaw which was disclosed in the latest Shadow Broker revelations. Lotus Domino includes an IMAP server. IMAP or Internet Message Access Protocol is an Internet standard protocol used by e-mail clients to retrieve e-mail messages from th...

Microsoft Windows 'libjpeg' Information Disclosure Vulnerability (KB4015383)

This host is missing an important security update according to Microsoft Security update KB4015383 SPDX-FileCopyrightText: 2017 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier:...

Mozilla: asm.js JIT-spray bypass of ASLR and DEP (MFSA 2017-06)

JIT-spray targeting asm.js combined with a heap spray allows for a bypass of ASLR and DEP protections leading to potential memory corruption attacks. This vulnerability affects Firefox 52, Firefox ESR 45.8, Thunderbird 52, and Thunderbird 45.8...

Mozilla: asm.js JIT-spray bypass of ASLR and DEP (MFSA 2017-06)

JIT-spray targeting asm.js combined with a heap spray allows for a bypass of ASLR and DEP protections leading to potential memory corruption attacks. This vulnerability affects Firefox 52, Firefox ESR 45.8, Thunderbird 52, and Thunderbird 45.8...