Detecting Kernel Memory Disclosure – Whitepaper

Posted by Mateusz Jurczyk, Project Zero Since early 2017, we have been working on Bochspwn Reloaded – a piece of dynamic binary instrumentation built on top of the Bochs IA-32 software emulator, designed to identify memory disclosure vulnerabilities in operating system kernels. Over the course of...

Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : AMD Microcode update (USN-3690-1)

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-3690-1 advisory. Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via...

USN-3690-1 amd64-microcode update

Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. This update provide...

kernel: Incorrect error handling in the set_mempolicy and mbind compat syscalls in mm/mempolicy.c

Incorrect error handling in the setmempolicy and mbind compat syscalls in 'mm/mempolicy.c' in the Linux kernel allows local users to obtain sensitive information from uninitialized stack data by triggering failure of a certain bitmap operation...

kernel: mm subsystem does not properly enforce the CONFIG_STRICT_DEVMEM protection mechanism

The mm subsystem in the Linux kernel through 4.10.10 does not properly enforce the CONFIGSTRICTDEVMEM protection mechanism, which allows local users to read or write to kernel memory locations in the first megabyte and bypass slab-allocation access restrictions via an application that opens the...

kernel: net: sctp_v6_create_accept_sk function mishandles inheritance

The sctpv6createacceptsk function in net/sctp/ipv6.c in the Linux kernel mishandles inheritance, which allows local users to cause a denial of service or possibly have unspecified other impact via crafted system calls, a related issue to CVE-2017-8890. An unprivileged local user could use this fl...

Security Bulletin: IBM Netezza Host Management is affected by the vulnerabilities known as Spectre and Meltdown.

Summary IBM Netezza Host Management is affected by the vulnerabilities known as Spectre and Meltdown, which can enable CPU data cache timing to be abused to bypass conventional memory security restrictions to gain access to privileged memory that should be inaccessible. Vulnerability Details CVEI...

Security Bulletin: Multiple vulnerabilities in GPFS affects IBM® DB2® LUW on AIX and Linux (CVE-2015-0197, CVE-2015-0198, CVE-2015-0199)

Summary There are multiple vulnerabilities in IBM® General Parallel File System, Versions V3.4 and V3.5 that are used by DB2® pureScale™ Feature on AIX and Linux. Vulnerability Details CVEID: CVE-2015-0197 DESCRIPTION: IBM General Parallel File System could allow a local attacker which only has a...

Security Bulletin: IBM Aspera Platform On Demand, IBM Aspera Server On Demand, IBM Aspera Faspex On Demand, IBM Aspera Shares On Demand, IBM Aspera Transfer Cluster Manager is affected by the vulnerabilities known as Spectre and Meltdown.

Summary IBM Aspera Platform On Demand, IBM Aspera Server On Demand, IBM Aspera Faspex On Demand, IBM Aspera Shares On Demand, IBM Aspera Transfer Cluster Manager is affected by the vulnerabilities known as Spectre and Meltdown, which can enable CPU data cache timing to be abused to bypass...

Memory corruption

Due to insufficient parameters verification GPU driver of Mate 9 Pro Huawei smart phones with the versions before LON-AL00B 8.0.0.356C00 has an arbitrary memory free vulnerability. An attacker can tricks a user into installing a malicious application on the smart phone, and send given parameter t...

CVE-2017-17173

Due to insufficient parameters verification GPU driver of Mate 9 Pro Huawei smart phones with the versions before LON-AL00B 8.0.0.356C00 has an arbitrary memory free vulnerability. An attacker can tricks a user into installing a malicious application on the smart phone, and send given parameter t...

CVE-2017-17173

Due to insufficient parameters verification GPU driver of Mate 9 Pro Huawei smart phones with the versions before LON-AL00B 8.0.0.356C00 has an arbitrary memory free vulnerability. An attacker can tricks a user into installing a malicious application on the smart phone, and send given parameter t...

Safe'N'Sec SoftControl/SafenSoft SysWatch, SoftControl/SafenSoft TPSecure and SoftControl/SafenSoft Enterprise Unauthorized Operation Vulnerabilities

Safe'N'Sec SoftControl/SafenSoft SysWatch, SoftControl/SafenSoft TPSecure, and SoftControl/SafenSoft Enterprise are Russian Safe'N'Sec's proactive malware defense applications. A vulnerability exists in the snscore.sys file in Safe'N'Sec SoftControl/SafenSoft SysWatch, SoftControl/SafenSoft...

Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : libvirt vulnerability and update (USN-3680-1)

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3680-1 advisory. Ken Johnson and Jann Horn independently discovered that microprocessors utilizing speculative execution of a memory read may allo...

Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : QEMU update (USN-3679-1)

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-3679-1 advisory. Ken Johnson and Jann Horn independently discovered that microprocessors utilizing speculative execution of a memory read may allow...

Ubuntu: Security Advisory (USN-3679-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2018 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Security Advisory - Arbitrary Memory Free Vulnerability in GPU Driver of Some Huawei Smart Phones

There is an arbitrary memory free vulnerability in GPU driver of some Huawei smart phones due to insufficient parameters verification. An attacker can tricks a user into installing a malicious application on the smart phone, and send given parameter to driver to release special kernel memory...

CVE-2018-5718

Improper restriction of write operations within the bounds of a memory buffer in snscore.sys in SoftControl/SafenSoft SysWatch, SoftControl/SafenSoft TPSecure, SoftControl/SafenSoft Enterprise Suite before version 4.4.1 allows local users to cause a denial of service BSOD or modify kernel-mode...

USN-3679-1: QEMU update

Ken Johnson and Jann Horn independently discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via sidechannel attacks. An attacker in the guest could use this to expose sensitive guest information, including kernel memory. This update...

USN-3679-1 qemu update

Ken Johnson and Jann Horn independently discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via sidechannel attacks. An attacker in the guest could use this to expose sensitive guest information, including kernel memory. This update...